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        <title><![CDATA[ShantonuAcharjee]]></title>
        <link>https://scienceproject.bd/en/rss-feeds/feed/author/shantonu-acharjee</link>
        <description><![CDATA[Science Project BD - ShantonuAcharjee]]></description>
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                    <dc:rights><![CDATA[© 2026 Science Project BD. All rights reserved.]]></dc:rights>
        
                        <item>
                    <title><![CDATA[People and Vehicle Counter Using Ultrasonic Sensor]]></title>

                    <link>https://scienceproject.bd/en/people-and-vehicle-counter-using-ultrasonic-sensor-306</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/people-and-vehicle-counter-using-ultrasonic-sensor-306</guid>

                    <description><![CDATA[Smart Entry Exit Counter Using Arduino and Ultrasonic Sensors
This smart entry and exit counter project is designed using two ultrasonic sensors, an Arduino Nano, and a 16x2 LCD display with I2C module. It accurately detects the number of people or vehicles entering and exiting a space, making it ideal for rooms, garages, event halls, or restricted areas. The display updates in real-time to show how many individuals or cars are currently inside. Powered by a TP4056 module, this compact and efficient system is perfect for automation and monitoring solutions.
Specifications:

Microcontroller: Arduino Nano
Sensor Type: 2x Ultrasonic Sensors
Display: 16x2 LCD with I2C Module
Power Supply: TP4056 Charging Module
Use Case: People/Vehicle Counting
Applications: Rooms, Garages, Event Spaces
Wiring: Thin cable for easy connections]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:47 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[IR Remote Controlled Light and Fan Project]]></title>

                    <link>https://scienceproject.bd/en/ir-remote-controlled-light-and-fan-project-307</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/ir-remote-controlled-light-and-fan-project-307</guid>

                    <description><![CDATA[Arduino IR Remote Based Home Automation Science Project
This IR remote-controlled light and fan project is a practical home automation science project designed using Arduino Nano. It allows students to control an AC bulb and a DC fan using any TV remote. When the user presses button "1", the AC bulb turns on; pressing "2" activates the DC fan. This project is ideal for school and college science fairs and robotics competitions in Bangladesh.
Specifications:

Arduino Nano board for IR signal decoding
IR receiver module with included TV remote
Two 5V relays for controlling AC bulb and DC fan
BC557 PNP transistor for relay switching
1k resistor and general-purpose diodes for safe relay operation
DC motor with mini fan setup
TP4056 module for powering via mobile charger (charger not included)
6 ceramic resistor to manage voltage to the motor
Electrolytic capacitors for IR sensor and motor stabilization
Standard AC bulb holder included (bulb not included)]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_3f9dd1805e41a0bb55c23c92a180a32a.webp" length="29884" type="image/jpeg"/>

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                    <pubDate>Mon, 18 May 2026 11:21:47 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Blind Assist Goggles with Obstacle Alert & Day/Night Mode]]></title>

                    <link>https://scienceproject.bd/en/blind-assist-goggles-with-obstacle-alert-and-daynight-mode</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/blind-assist-goggles-with-obstacle-alert-and-daynight-mode</guid>

                    <description><![CDATA[Smart Vision Glasses for the Blind  Obstacle Detection & Light Sensor
Help visually impaired individuals navigate safely with these innovative Smart Vision Glasses. Designed with ultrasonic sensors and a light detection system, this wearable device alerts users to nearby obstacles and differentiates between day and night modes for adaptive assistance.
Specifications:

Material: 5MM PVC Board (Lightweight Frame)
Sensors: 3x HC-SR04 Ultrasonic (Left/Front/Right)
Light Detection: LDR Sensor (Day/Night Mode)
Alert System: Buzzer (Continuous sound for obstacles, beeps for day mode)
Control: 2-Pin Push Button (Manual light status check)
Microcontroller: Arduino Nano
Power: TP-4056 Type-C Module (External Power Bank Compatible)
Cables: 22AWG Slim Wires (1.6mm thickness)]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_eb05eb749fe0e9e08b9a6a8f29fc1f98.webp" length="34424" type="image/jpeg"/>

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                    <pubDate>Mon, 18 May 2026 11:21:47 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Portable Fire Alarm System  Flame Sensor Science Project]]></title>

                    <link>https://scienceproject.bd/en/portable-fire-alarm-system-flame-sensor-science-project-309</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/portable-fire-alarm-system-flame-sensor-science-project-309</guid>

                    <description><![CDATA[Flame Detection Fire Alarm  DIY Science Project Kit
This Fire Alarm Science Project is a hands-on educational kit that demonstrates fire detection using an infrared flame sensor. Perfect for school science fairs, STEM learning, or home safety experiments, this project helps students understand fire safety technology in a practical way. When flames are detected, the buzzer sounds an alarm, making it an engaging and functional demonstration.
Specifications:

Detection Method: Infrared (IR) Flame Sensor
Alarm: 5V Buzzer (Loud & Clear Sound)
Power Supply: 8650 Li-Ion Battery (3.7V)
Voltage Booster: Mini Boost Module (3.7V to 5V)
Transistor: BC557 (Signal Amplification)
Charging: TP4056 1A Li-Ion Charger Module
Switch: 6-Pin DPDT Slide Switch (Power Control)
Wiring: 22AWG Slim Cables (Durable Connections)
Resistor: 1k 0.25W (Current Limiting)
Case: Battery Holder (Secure & Compact)]]></description>

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                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_aa8559f6534746fdfcc8b16eff015d5e.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:47 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Smart Air Monitor  Kids Science Project]]></title>

                    <link>https://scienceproject.bd/en/smart-air-monitor-kids-science-project-310</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/smart-air-monitor-kids-science-project-310</guid>

                    <description><![CDATA[Oxygen Defender - Kids' Air Quality Science Kit
Teach children about environmental science with this interactive air quality monitor! This project visually demonstrates how trees produce oxygen and purify air by comparing a green zone vs. polluted zone. When air quality drops (low oxygen/high pollution), the buzzer alarm activates, showing kids the immediate impact of pollution.
Key Features:

MQ-2 Gas Sensor detects LPG, smoke, propane, hydrogen
Visual green vs. polluted zone comparison
Loud 5V buzzer alarm activates when air quality drops
Rechargeable 18650 battery (3.7V) with charging module
3.7V to 5V boost converter for stable power
Easy-to-assemble components with color-coded wires
Perfect for school projects and STEM education

What's Included:

MQ-2 Gas Sensor Module
18650 Battery with holder and charger
Voltage boost converter module
BC557 PNP Transistor
5V Active Buzzer
Connection wires
Step-by-step instruction manual]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:47 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Object Detection Alarm Project Using Ultrasonic Sensor]]></title>

                    <link>https://scienceproject.bd/en/object-detection-alarm-project-using-ultrasonic-sensor-300</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/object-detection-alarm-project-using-ultrasonic-sensor-300</guid>

                    <description><![CDATA[Smart Distance Alert System with Buzzer and Sensor
This compact object detection system uses an ultrasonic sensor to detect motion or presence within a specific distance. It is ideal for various practical uses such as tank water level alert, intruder detection, or protecting crops from animals. Powered via Type-C charger, it runs on a rechargeable battery, making it fully portable and efficient for outdoor or indoor use.
Specifications

Sensor Type: HC-SR04 Ultrasonic Module
Microcontroller: Arduino Nano R3
Detection Range: Adjustable (default 15cm)
Alarm: 5V Active Buzzer for sound alert
Power Module: TP4056 Li-Ion Charger with Type-C input
Cable: 1.6mm Slim 22AWG wire for connections
Applications: Tank overflow alert, theft detector, crop protection]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_389cdb2fd1f6f152a68f3c395f94979f.webp" length="47260" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_389cdb2fd1f6f152a68f3c395f94979f.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:46 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Talking Human Robot Project with AI and Voice Control]]></title>

                    <link>https://scienceproject.bd/en/talking-human-robot-project-with-ai-and-voice-control-301</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/talking-human-robot-project-with-ai-and-voice-control-301</guid>

                    <description><![CDATA[Smart Human-Like AI Voice Robot for Interactive Projects
This smart human-like AI robot is designed for voice interaction and advanced communication in both English and Bangla. Built with durable materials and powered by Arduino and Python, this project brings together mechanical movement and artificial intelligence to create an engaging experience for learning, demonstration, and innovation.
Specifications:

Material: 5mm Plastic PVC Board for body structure
Hand Movement: 2× MG995 360° Metal Gear Servo Motors
Head Movement: 1× MG90S Metal Gear Servo Motor
Eye Indicator: 2× 3mm LED lights (status indicator)
Controller: Arduino Uno R3 SMD Development Board
Audio Input: 3.5mm Microphone
Audio Output: 2× Mini Sound Boxes
Programming Languages: Python and C++
Language Support: English and Bangla voice interaction
Response System: Predefined answers + AI-based replies]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_c02903377f117b5d49df5b9e2d8fd979.webp" length="16008" type="image/jpeg"/>

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                    <pubDate>Mon, 18 May 2026 11:21:46 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Solar Tracker Complete Project with Arduino]]></title>

                    <link>https://scienceproject.bd/en/solar-tracker-complete-project-with-arduino-302</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/solar-tracker-complete-project-with-arduino-302</guid>

                    <description><![CDATA[Single Axis Solar Tracker Project with Arduino
This Solar Tracker is a fully assembled, ready-to-use project designed for students and science fair exhibitions. It tracks sunlight in a single axis (up to 180° rotation) using two LDR sensors and a metal gear servo motor controlled by an Arduino Uno. The project features rechargeable battery support, regulated power output, and a durable PVC frameideal for educational purposes and hands-on learning.
Specifications:

Microcontroller: Arduino Uno SMD R3
Light Detection: 2 pcs LDR Sensors with heat shrink tube
Solar Panel: 5V 0.75W for light detection
Motor: MG90S Metal Gear Servo Motor (Single Axis, 180°)
Power Supply: 2 pcs 18650 Rechargeable 3.7V Batteries
Battery Holder: 2-chamber 18650 battery holder case
Charger: Type-C 2S 4A 8.4V Lithium Battery Charging Board
Voltage Regulator: LM2596 DC-DC Buck Converter (8.4V to 5V)
Switch: Slide Switch for power control
Structure: 5mm Plastic PVC Board
Resistors: 3 pcs 10K Ohm 1/4W
Assembly: Glue stick used for joining components]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_b45648f32973ede15efd503195e8e224.webp" length="40810" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_b45648f32973ede15efd503195e8e224.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:46 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Earthquake Vibration Detector Project with Arduino Nano]]></title>

                    <link>https://scienceproject.bd/en/earthquake-vibration-detector-project-with-arduino-nano-303</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/earthquake-vibration-detector-project-with-arduino-nano-303</guid>

                    <description><![CDATA[Earthquake Alert System Using Vibration Sensor and Arduino Nano
This Earthquake Alert System is a smart and compact science project designed for students and enthusiasts in Bangladesh. It uses the SW-420 vibration sensor to detect tremors and immediately activates a buzzer alert through an Arduino Nano. This project is ideal for school and college science exhibitions, earthquake simulations, or early warning demonstrations. The compact design with a PVC board and rechargeable battery module makes it perfect for portable educational use.
Specifications:

Controller: Arduino Nano
Vibration Sensor: SW-420 Module
Alert System: 5V Buzzer
Power Supply: TP4056 Type-C Charging Module
Frame: 5mm PVC Project Board
Connectivity: Thin cables for internal wiring
Assembly Support: Hot glue used for stable fixing
Ready-to-use project for science fairs]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_e16944691ab0bf3fbe23c845e4f5a556.webp" length="21396" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_e16944691ab0bf3fbe23c845e4f5a556.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:46 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Voice and Bluetooth Robot Car with Obstacle Sensor]]></title>

                    <link>https://scienceproject.bd/en/voice-and-bluetooth-robot-car-with-obstacle-sensor-304</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/voice-and-bluetooth-robot-car-with-obstacle-sensor-304</guid>

                    <description><![CDATA[Smart Bluetooth and Voice Controlled Obstacle Avoiding Robot Car
This robot car is a perfect entry into robotics and automation for students in Bangladesh. It features dual control via Bluetooth and voice commands using mobile apps, making it a versatile educational project. Equipped with an ultrasonic obstacle sensor and a servo motor for dynamic object detection, the car avoids collisions intelligently. Ideal for school, college, and university-level science and robotics fairs.
Specifications:

Controlled by Arduino Uno R3 SMD board
HC-06 Bluetooth module for wireless control
Supports voice commands via Android app
Obstacle detection using HC-SR04 Ultrasonic Sensor
SG90 servo motor for directional scanning
4 pcs 100 RPM BO motors with rubber wheels
L298N motor driver for motor control
Powered by 3 pcs 18650 Li-Ion rechargeable batteries
Battery charging via Type-C port (12.6V)
Durable frame made from 5MM plastic PVC board
Manual ON/OFF switch included]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_ec3467220a000fe62b8ce20072f456cd.webp" length="59196" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_ec3467220a000fe62b8ce20072f456cd.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:46 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Arduino Based Solar Sun Tracker Project for Students]]></title>

                    <link>https://scienceproject.bd/en/arduino-based-solar-sun-tracker-project-for-students-305</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/arduino-based-solar-sun-tracker-project-for-students-305</guid>

                    <description><![CDATA[Smart Dual LDR Arduino Solar Tracker System for DIY Project
This Arduino-based Solar Sun Tracker project is designed to follow the sun using dual LDR sensors, maximizing solar energy collection. The system automatically adjusts the solar panels angle using an MG90S servo motor and charges 18650 rechargeable batteries. Its a practical and educational science project ideal for students, schools, and hobbyists interested in renewable energy and automation.
Specifications:

5V 0.75W Solar Panel
2 Light Dependent Resistors (LDR)
MG90S Micro Servo Motor
Arduino Uno SMD Board
2 x 18650 Rechargeable Batteries
2 Chamber 18650 Battery Holder
2596 Buck Converter Module (Step-down to 5V)
Slide Switch for Power Control
3mm LED for Charging Indicator
LED Bulb as Output Load
PVC Plastic Board Structure
Wires and Jumper Cables Included]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_48aad1f93e0350c0dcd0376f2236e903.webp" length="37094" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_48aad1f93e0350c0dcd0376f2236e903.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:46 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Vibration Detection Alarm Science Project]]></title>

                    <link>https://scienceproject.bd/en/vibration-detection-alarm-science-project-295</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/vibration-detection-alarm-science-project-295</guid>

                    <description><![CDATA[DIY Type-C Powered Vibration Alarm Kit for Projects
This DIY vibration detection alarm kit is a compact and affordable science project designed for students, hobbyists, and school exhibitions. It uses the SW-420 vibration sensor and an Arduino Nano R3 as the core controller. The built-in 5V active buzzer provides an audible alert when vibration is detected. A TP4056 Type-C module allows direct charging via a mobile charger, making it easy to use and cost-effective.
Specifications:

Sensor: SW-420 Vibration Sensor Module
Microcontroller: Arduino Nano R3 (ATmega328)
Alarm: 5V Active Buzzer
Power Input: Type-C via TP4056 Li-ion Charging Module
Wiring: 22AWG Slim Multicolor Cable
Safety: Solder joints insulated with glue gun protection
Installation: Plug-and-play, beginner-friendly
Use Case: Science projects, school demos, hobby kits]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_c6e433ce4b7490dd276dac1343a96baf.webp" length="46298" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_c6e433ce4b7490dd276dac1343a96baf.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:45 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Solar Tracker System with Servo Motor and Temperature Sensor]]></title>

                    <link>https://scienceproject.bd/en/solar-tracker-system-with-servo-motor-and-temperature-sensor-294</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/solar-tracker-system-with-servo-motor-and-temperature-sensor-294</guid>

                    <description><![CDATA[Solar Tracker System with Servo Motor and Auto Cooling
This Solar Tracker System is designed to automatically track the sun and adjust the solar panels position to maximize energy collection. Equipped with a servo motor, light-dependent resistors (LDR) for sunlight direction detection, and a temperature sensor for auto cooling, this project offers a fully integrated solution for solar energy and temperature management.
Product Overview
The Solar Tracker System uses two LDR sensors to detect the sun's position and adjust the solar panels orientation accordingly. The system is powered by a 5V solar panel, and it charges two 18650 Li-Ion batteries. To prevent overheating, a temperature sensor automatically turns on a water pump for cooling when necessary. This project is perfect for students or DIY enthusiasts looking to explore solar energy, temperature control, and automated systems. The project is controlled by an Arduino Uno R3 and displayed on a 16x2 LCD screen.
Specifications

Two 7mm LDR Light Sensors for sun direction detection
5V 0.75W Solar Panel for energy storage
Two Sanford 18650 Li-Ion 3.7V 7000mAh Batteries
Type-C 2S 4A 8.4V Lithium Battery Charger Board
MG90s RC 9g Servo Motor with Semi-Metal Gear 180°
NTC 3 Pin Temperature Sensor Module for temperature measurement
Mini Submersible Water Pump DC 3-6V 100L/H
16x2 LCD Display - White on Blue with I2C LCD Adapter
Arduino Uno R3 SMD Development Board
5mm Plastic PVC Board for the project frame
1.6mm Slim 22AWG Cable for connections
Capacitor and Diode for filtering motor back EMF]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_722a549f8df2f5fd0f39ffab53f3556f.webp" length="63090" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_722a549f8df2f5fd0f39ffab53f3556f.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:45 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Fire Alarm Science Project Without Arduino]]></title>

                    <link>https://scienceproject.bd/en/fire-alarm-science-project-without-arduino-296</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/fire-alarm-science-project-without-arduino-296</guid>

                    <description><![CDATA[DIY Flame Detection Alarm Kit Without Arduino
This fire alarm science project is a complete DIY kit designed for detecting flames using a 4-pin flame sensor and triggering a loud buzzer. Ideal for students, hobbyists, or science fair projects, this circuit runs without any Arduino, making it beginner-friendly and affordable. Powered by a rechargeable 18650 battery with a step-up module to ensure stable 5V output. Great for practical demonstrations and safety learning purposes.
Specifications:

4-Pin Flame Sensor Module (5V)
BC557 PNP Transistor for signal boosting
1k Ohm Resistor (0.25W) for base current control
5V Active Buzzer for sound alert
18650 3.7V Li-Ion Rechargeable Battery
Single Cell 18650 Battery Holder
TP4056 Battery Charging Module (1A)
Mini Boost Converter (3.7V to 5V Output)
SPDT Rocker Switch (On/Off/On)
22AWG Cable for wiring]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_2ea1480e1b3c1d19fd0003e014dc2988.webp" length="42720" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_2ea1480e1b3c1d19fd0003e014dc2988.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:45 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Air Cleaner Science Project for Industry & Vehicles]]></title>

                    <link>https://scienceproject.bd/en/air-cleaner-science-project-for-industry-and-vehicles</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/air-cleaner-science-project-for-industry-and-vehicles</guid>

                    <description><![CDATA[Portable Air Purifier Science Project for Vehicles & Industry
This innovative air cleaner science project is designed for industrial zones, ship engine rooms, and public transport like buses. It filters polluted air using a multi-chamber system and cools it with high-speed fans, making it ideal for real-world applications. Additionally, it features a built-in turbine to generate electricity from clean airflow, making it an eco-friendly and educational solution.
Specifications:

3 Cotton Filtration Chambers for Effective Air Cleaning
4 Cooling Fans for Air Suction and Circulation
Powered by 3.7V Lithium Battery
TP4056 Charging Module for Safe Battery Charging
6-Pin Slide Switch for Easy Operation
Slim Cables for Compact Internal Wiring
Airflow Designed Through 3 Plastic Boxes & PVC Pipe
Built-in Turbine for Electricity Generation from Clean Air
Frame Made with Durable 5mm PVC Board]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_28611f3cd483d358be27c95ae35f05cb.webp" length="31658" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_28611f3cd483d358be27c95ae35f05cb.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:45 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Smart Safety Bike Helmet with Crash Alert and GPS Project]]></title>

                    <link>https://scienceproject.bd/en/smart-safety-bike-helmet-with-crash-alert-and-gps-project-298</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/smart-safety-bike-helmet-with-crash-alert-and-gps-project-298</guid>

                    <description><![CDATA[Smart Helmet with Emergency SMS and GPS Location
This smart safety helmet is designed for bike riders who value safety and innovation. The helmet uses sensors to ensure the rider is wearing itif not, the bike wont start. In case of a crash, it instantly sends an emergency SMS with the riders real-time location. Perfect for school or college science projects or real-world demonstrations, this compact system is powered by rechargeable batteries and controlled by an Arduino board.
Specifications

IR Sensor for helmet detection
SIM800L GSM module for sending SMS
NEO 6M GPS module for location tracking
4-pin tactile push button for crash detection
Arduino Uno R3 controller board
3x 18650 rechargeable Li-ion batteries
3-slot 18650 battery holder case
LM2596 buck converter for power regulation
SPST rocker switch for power control
100 RPM BO gear motor for bike simulation
Rubber robot wheel for BO motor
Single channel relay module to control motor
Male-female jumper wires and 22AWG cable
Glue gun sticks for mounting components]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_66a4b8afffcb25935e5b318fc0c52d02.webp" length="55648" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_66a4b8afffcb25935e5b318fc0c52d02.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:45 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Smart Car Parking System with Lift and Display Project]]></title>

                    <link>https://scienceproject.bd/en/smart-car-parking-system-with-lift-and-display-project-299</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/smart-car-parking-system-with-lift-and-display-project-299</guid>

                    <description><![CDATA[Automatic Multi-Level Car Parking System Project
This Arduino-based smart parking system is designed for school and college-level science projects. It features automatic gate control, real-time slot display on LCD, and a servo-powered lift to manage both underground and top-floor parking. With sensors for entry, exit, and gate detection, the system operates efficiently without manual intervention. Ideal for students learning about automation, sensors, and embedded systems.
Specifications:

Control Board: Arduino Uno R3 SMD
Display: 16x2 LCD for showing available slots
Sensors: 3 × HC-SR04 Ultrasonic Sensors (Entry, Exit, Gate)
Gate Motor: MG90S 180° Metal Gear Servo
Lift Motor: MG995 360° Metal Gear Servo
Charger Module: TP4056 Li-Ion Battery Charging Module
Structure: Made with 5mm Plastic PVC Board
Wiring: 1.6mm Slim 22AWG Cable
Assembly: Large Glue Gun Sticks for fixing components]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_d4f19fe98bc542e319368c7fa3501af3.webp" length="42842" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_d4f19fe98bc542e319368c7fa3501af3.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:45 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Simple 4WD Robot Car for Kids Science Project]]></title>

                    <link>https://scienceproject.bd/en/simple-4wd-robot-car-for-kids-science-project-288</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/simple-4wd-robot-car-for-kids-science-project-288</guid>

                    <description><![CDATA[Kid's First Science Fair Robot Car Project
Looking for the perfect choice for your child's next science project? This fully assembled 4-wheel robot car is designed to impress! Made by Bigyan Project, it's the ideal project for young students who want to explore robotics. Since it's ready to go right out of the box, your child can focus on learning and presenting their project, not on complicated assembly. Just turn it on and watch it move! Its a simple, fun, and engaging way for kids to demonstrate the basics of circuits and motors for their science fair.
Specifications:

Motors: 4 x 100 RPM 3-6V TT Dual Shaft DC Yellow Motor
Wheels: 4 x 65mm Robot Wheel for BO Motor
Chassis: 1 x 5MM PVC 4-Wheel DIY Robot Car Chassis
Power Source: 2 x 18650 Rechargeable 3.7V Li-Ion Battery
Battery Holder: 1 x 2-Slot 18650 Battery Holder Case
Power Switch: 1 x 2-Pin SPST Rocker Switch (ON/OFF)
Wiring: Connected with 22AWG Cable]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_09f15c174d854d3f51ea3d33507c5086.webp" length="24664" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_09f15c174d854d3f51ea3d33507c5086.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:44 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Fire Fighter Robot ESP32-CAM Auto Obstacle Avoid]]></title>

                    <link>https://scienceproject.bd/en/fire-fighter-robot-esp32-cam-auto-obstacle-avoid-289</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/fire-fighter-robot-esp32-cam-auto-obstacle-avoid-289</guid>

                    <description><![CDATA[DIY Fire Fighting Robot ESP32-CAM Bluetooth Control Autonomous Navigation
Introducing the advanced DIY Fire Fighting Robot by Bigyan Project. This intelligent robot features autonomous obstacle avoidance, automatic fire detection with water spray, and full Bluetooth control via mobile app. Stream live video to your device and switch between auto and manual modes seamlessly.
Product Specifications

Model: ESP32-CAM, Arduino Nano R3, ESP32 Dev Board
Functionality: Autonomous Fire Fighting, Obstacle Avoidance, Bluetooth Control, Live Video Streaming
Control Modes: Auto Navigation, Manual (App Controlled)
Power Source: 4x 18650 Li-Ion Batteries (3.7V each)
Battery Charging: 16.8V Type-C 4A Lithium Battery Charging Module
Voltage Conversion: 2x LM2596 DC-DC Buck Converter (12V & 5V)
Water System: Mini Submersible Water Pump, 6mm PVC Pipe, 2x MG90S Servo Motors (180°), D882 Transistor, 1k Ohm Resistor, 25V Capacitor, 4007N Diode
Fire Detection: 3x Flame Sensor Modules
Obstacle Detection: 3x HC-SR04 Ultrasonic Sensor Modules
Locomotion: 4x 100 RPM TT BO Gear Motors, 4x 65mm Robot Wheels
Motor Driver: L298N Motor Driver Module
Chassis: 5MM Plastic PVC Board
Assembly: Large Glue Gun Sticks
Wiring: 1.6mm Slim 22AWG Cable
Power Switch: 3 Pin SPDT Rocker Switch]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_2f8d60d4364e188cb711533cfe9f156b.webp" length="57402" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_2f8d60d4364e188cb711533cfe9f156b.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:44 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Footstep Power Generator Project - Piezoelectric]]></title>

                    <link>https://scienceproject.bd/en/footstep-power-generator-project-piezoelectric-290</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/footstep-power-generator-project-piezoelectric-290</guid>

                    <description><![CDATA[Kinetic Energy Harvesting Footstep Power Project
Revolutionize personal power generation with the Eco Step. This innovative project harnesses kinetic energy from footsteps of pedestrians and vehicles, converting it into stored electrical power. Designed for sustainability and convenience, it allows you to generate your own clean energy on the go. Store the captured power in the integrated battery system and use it to charge your mobile devices, making it an ideal solution for off-grid power needs or as an educational demonstration of renewable energy principles.
Key Features & Specifications:

Energy Source: Footsteps (Human & Vehicle Traffic)
Generation Technology: Piezoelectric Transducers (3x 35mm Prewired Piezo Disc Buzzer Sensors)
Power Storage: 2x 18650 Rechargeable Li-Ion Batteries (3.7V)
Battery Management: Type-C 2S 4A 8.4V Lithium Battery Charger Board
Voltage Conversion: LM2596 Buck Converter (8.4V to 5V Output)
User Interface: 16x2 LCD with I2C Module for Status Display
Control: Arduino Uno R3 SMD Development Board
Indicators: 3mm LED (Power Status)
Power Output: 5V USB for Phone Charging
Frame: 5mm Plastic PVC Board
Connectivity: 22AWG Cable
Input Charging: Type-C Port
Power Switch: 2-Pin Rocker Switch]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_64442ebcad92357ec9bee375f0fe89b4.webp" length="49420" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_64442ebcad92357ec9bee375f0fe89b4.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:44 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Dual Axis Solar Tracker with Arduino and LDR]]></title>

                    <link>https://scienceproject.bd/en/dual-axis-solar-tracker-with-arduino-and-ldr-291</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/dual-axis-solar-tracker-with-arduino-and-ldr-291</guid>

                    <description><![CDATA[Arduino Based Dual Axis Solar Panel Tracking System
This science project is a dual axis solar tracker designed with Arduino Uno and LDR sensors. It automatically adjusts the solar panel position both horizontally and vertically using two MG90s servo motors to capture maximum sunlight. The project also includes an automatic day-night control system with LED indicators, making it an ideal educational and DIY project for students and solar enthusiasts.
Specifications:

Solar Panel: 5V 0.75W (99x69mm)
Controller: Arduino Uno R3 SMD
Servo Motor: 2 × MG90s RC 9g Semi-Metal Gear (180°)
Light Detection: 4 × LDR Sensors with Resistors
Power Supply: 2 × 18650 Rechargeable Li-Ion Batteries
Charging Module: Type-C 2S 4A 8.4V Lithium Battery Charger Board
Voltage Regulation: 3 × LM7805 IC
Indicators: 3mm LED for charging, 1W COB LED for night light
Frame: 5mm PVC Board with heat shrink and glue support
Extra: Auto light ON/OFF system based on solar detection]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_f9304968959cec6e2940c3d2d29c2282.webp" length="41676" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_f9304968959cec6e2940c3d2d29c2282.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:44 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Bluetooth Voice Control Robot Car with Obstacle Avoidance]]></title>

                    <link>https://scienceproject.bd/en/bluetooth-voice-control-robot-car-with-obstacle-avoidance-292</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/bluetooth-voice-control-robot-car-with-obstacle-avoidance-292</guid>

                    <description><![CDATA[Smart Bluetooth and Voice Controlled Robot Car with Auto Stop
Experience advanced robotics with our smart robot car, featuring dual control modes  Bluetooth app and voice commands. Designed for fun, learning, and innovation, this car is equipped with an obstacle avoidance system that automatically stops the car when an object is detected. Perfect for students, hobbyists, and DIY enthusiasts.
Specifications:

Control Modes: Bluetooth app and voice command
Motors: 4pcs 100 RPM 3-6V TT Dual Shaft DC BO Gear Motors
Wheels: 4pcs 65mm Robot Wheels for BO Motors
Battery: 3pcs 18650 Li-Ion 3.7V 7000mAh
Battery Holder: 3 Chamber 18650 Battery Holder Case
Charger: Type-C 3S 4A 12.6V Lithium Battery Charging Board
Switch: 2 Pin Rocker Switch SPST
Motor Driver: L298N Motor Driver Module
Bluetooth Module: HC-06 Bluetooth Serial Module
Main Board: Arduino Uno R3
Sensor: HC-SR04 Ultrasonic Sensor
Servo Motor: MG90s RC 9g Semi-Metal Gear 180°
Frame Material: 5mm Plastic PVC Board
Assembly: Large Glue Gun Sticks]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_915eecddf37a6acfdd9986d697bbcf71.webp" length="47676" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_915eecddf37a6acfdd9986d697bbcf71.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:44 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Blind Goggles Project with Ultrasonic Sensors for Obstacle Detection]]></title>

                    <link>https://scienceproject.bd/en/blind-goggles-project-with-ultrasonic-sensors-for-obstacle-detection-293</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/blind-goggles-project-with-ultrasonic-sensors-for-obstacle-detection-293</guid>

                    <description><![CDATA[Blind Goggles Project for Obstacle Detection Using Ultrasonic Sensors
Overview / Introduction: The Blind Goggles project is a unique solution designed for obstacle detection using advanced ultrasonic sensors. This project helps individuals navigate their surroundings by providing auditory feedback when an obstacle is detected. Equipped with three ultrasonic sensors positioned at the left, middle, and right sides, it ensures 360-degree coverage. The LDR sensor adjusts the systems response based on day or night conditions, while the 5V buzzer signals the presence of an obstacle. The system is powered by a TP4056 Type-C module, allowing it to run seamlessly using a power bank. Perfect for science projects or DIY enthusiasts, this project offers an innovative way to integrate technology with everyday problem-solving.
Specifications:

Sensors: 3 Ultrasonic Sensors (Left, Middle, Right)
Additional Sensor: LDR for Day/Night Detection
Alarm: 5V Buzzer for Obstacle Warning
Control Unit: Arduino Nano Type B
Power Supply: TP4056 Type-C Module with Power Bank
Wiring: Slim, Thin Cables for Sensor Connection
Material: 5mm PVC Board for Goggles Frame
Assembly: Glue Stick for Frame Construction]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_a6b2c2149d75dbe75541ba4df3ecf824.webp" length="28394" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_a6b2c2149d75dbe75541ba4df3ecf824.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:44 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Hand Gesture Controlled Robotic Wheelchair Science Project]]></title>

                    <link>https://scienceproject.bd/en/hand-gesture-controlled-robotic-wheelchair-science-project-284</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/hand-gesture-controlled-robotic-wheelchair-science-project-284</guid>

                    <description><![CDATA[Arduino Gyroscope Controlled 4WD Robotic Car Science Project
Build an innovative Hand Gesture Controlled Robotic Wheelchair project for your next science fair. This 4WD robot is controlled using the tilt of your hand. It features the sensitive GY-521 MPU-6050 sensor, which reads your hand movements (forward, backward, left, right) and sends signals to the Arduino Uno. The Arduino then commands the L298N Motor Driver to operate the four 100 RPM TT motors. This is a complete project for students to learn about robotics, sensors, and programming in a practical, hands-on way.
Specifications:

Controller: Arduino Uno R3 SMD Development Board
Sensor: GY-521 MPU-6050 6-Axis Motion Sensor
Motor Driver: L298N Motor Driver Module
Motors: 4pcs 100 RPM 3-6V TT Dual Shaft DC Gear Motor
Wheels: 4pcs 65mm Robot Wheel for BO Motor
Chassis: 5MM PVC 4-Wheel DIY Robot Car Chassis
Battery Holder: 2 Chamber 18650 Battery Holder Case
Batteries: 2pcs 18650 Rechargeable 3.7V
Switch: 2 Pin Rocker Switch]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_134415f14af14aa02365f30913ddf3e1.webp" length="41200" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_134415f14af14aa02365f30913ddf3e1.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:43 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Live View Camera Robot Science Project]]></title>

                    <link>https://scienceproject.bd/en/live-view-camera-robot-science-project-286</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/live-view-camera-robot-science-project-286</guid>

                    <description><![CDATA[DIY Arduino RC Robot Car with ESP32 Live Camera & Obstacle Sensor
Build your own advanced smart robot with this complete DIY kit from Bigyan Project. This project is perfect for students, hobbyists, and electronics enthusiasts. Control the robot's movements directly from your smartphone via Bluetooth while getting a live video feed from the onboard ESP32-CAM. The robot is equipped with an ultrasonic sensor mounted on a servo motor, enabling it to automatically detect and avoid obstacles in its path. It's a fantastic hands-on experience in robotics, programming, and electronics.
Specifications

Main Controller: Arduino Uno R3 SMD
Camera & WiFi Module: ESP32-CAM with OV2640 Camera
Motor Driver: L298N Dual H-Bridge Module
Motors: 4pcs 100 RPM BO Gear Motors
Wheels: 4pcs 65mm Rubber Tire Wheels
Chassis: 5MM PVC 4-Wheel Robot Car Body
Obstacle Detection: HC-SR04 Ultrasonic Sensor
Sensor Mount: MG90s RC Servo Motor
Remote Control: HC-06 Bluetooth Serial Module
Power Source: 3pcs 18650 Li-Ion Batteries (3.7V each)
Charging System: 3S 4A 12.6V Type-C Lithium Battery Charging Board
Voltage Regulation: 3pcs LM7805 5V Voltage Regulator IC
Accessories: 3-Chamber 18650 Battery Holder, Rocker Switch, Resistors, Wires, Glue Sticks]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_399331296b18d4370ac5e389323e1911.webp" length="33356" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_399331296b18d4370ac5e389323e1911.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:43 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Rain Alert Alarm DIY Science Project for Students]]></title>

                    <link>https://scienceproject.bd/en/rain-alert-alarm-diy-science-project-for-students-283</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/rain-alert-alarm-diy-science-project-for-students-283</guid>

                    <description><![CDATA[Rain Sensor Alarm DIY Project Kit for Science Fair
Build your own Rain Alert Alarm with this complete DIY science project kit, specially designed for students and science fair enthusiasts. This project is a fantastic introduction to electronics, sensors, and alert systems. When the highly sensitive sensor module detects raindrops, it sends a signal to the circuit, activating a loud 5V buzzer. The kit is fully functional and includes a complete rechargeable power system, featuring an 18650 battery, a TP4056 charger, and a boost converter to safely power the 5V components from the 3.7V battery. It's a fun, educational, and practical project all in one.
Package Contents:

1 x Rain Detection Sensor Module - To detect raindrops
1 x 18650 3.7V Li-Ion Battery - To power the project
1 x 1 Chamber 18650 Battery Holder Case - To hold the battery
1 x TP4056 1A Li-Ion Battery Charger Module - To recharge the battery
1 x 3.7V to 5V Mini Boost Step Up Module - To convert 3.7V to 5V for the sensor/buzzer
1 x 5V Active Buzzer - To make an alarm sound
1 x BC557 PNP Transistor - To switch the buzzer on from the sensor signal
1 x 1K Ohm Resistor - To limit current to the transistor base
1 x 2 Pin Rocker Switch (SPST) - To turn the project ON/OFF
1 x 1.6mm Slim 22AWG Cable - For connections and wiring
1 x Large Glue Gun Stick - To assemble and secure parts]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_2497dc3bfddde9450b08130eae2903f4.webp" length="55794" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_2497dc3bfddde9450b08130eae2903f4.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:43 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Obstacle Alert Goggles with Vibration & Day/Night Mode]]></title>

                    <link>https://scienceproject.bd/en/obstacle-alert-goggles-with-vibration-and-daynight-mode</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/obstacle-alert-goggles-with-vibration-and-daynight-mode</guid>

                    <description><![CDATA[Blind Assist Goggles with 3-Way Obstacle Detection
Navigate your world with greater confidence and safety. The Blind Assist Goggles are a revolutionary smart device designed to help visually impaired individuals move more freely. Equipped with three ultrasonic sensors, this device detects obstacles from the front, left, and right, providing a complete sense of your immediate surroundings. When an object is near, you receive instant alerts through both a clear buzzer sound and a discreet vibration motor. A smart LDR sensor automatically adjusts for day or night conditions, and a simple push button lets you check the current mode. Built on a lightweight PVC frame and powered by a long-lasting rechargeable battery system with a modern Type-C charging port, these goggles are your reliable partner for daily navigation.
Specifications

Controller: Arduino Nano R3 (ATmega328)
Obstacle Sensing: 3 x HC-SR04 Ultrasonic Sensor Modules (Left, Middle, Right)
Alert System: 5V Active Buzzer and a Vibration Motor
Ambient Light Sensing: 1 x GL5516 LDR Photoresistor for Day/Night Mode
User Interface: 1 x 2-Pin Push Button Switch
Frame Material: 5MM Plastic PVC Board
Power Source: 2 x 18650 Rechargeable 3.7V Li-Ion Batteries
Battery Holder: 2 x 1-Chamber 18650 Battery Holder Case
Charging: Type-C 2S 4A 8.4V Lithium Battery Charger Board
Wiring: 1.6mm Slim 22AWG Cable]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_1cdb4e6e1323036706aea10e84fdd2fc.webp" length="33718" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_1cdb4e6e1323036706aea10e84fdd2fc.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:43 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Gas Leak Detector with Auto Gas & Power Cutoff]]></title>

                    <link>https://scienceproject.bd/en/gas-leak-detector-with-auto-gas-and-power-cutoff</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/gas-leak-detector-with-auto-gas-and-power-cutoff</guid>

                    <description><![CDATA[Arduino Gas Leak Safety Alarm Project with Automatic Servo & Relay Control
Ensure the safety of your home, lab, or kitchen with our advanced Gas Leak Safety System. This project is engineered to provide an immediate and comprehensive response to gas leaks. At its core, an Arduino Uno board processes data from a highly sensitive MQ-2 gas sensor. Upon detecting a leak, the system automatically triggers multiple safety protocols: a 5V relay instantly cuts off the main power to prevent sparks, an MG90S servo motor physically turns off the gas knob, a loud buzzer sounds the alarm, a bright red LED flashes as a visual warning, and a DC fan starts to ventilate the area. This all-in-one safety solution is an essential device for any safety-conscious individual and a fantastic educational project for students.
Specifications

Controller: Arduino Uno R3 SMD Development Board
Gas Sensor: MQ-2 Gas Sensor Module
Gas Valve Actuator: MG90S Metal Gear Servo Motor
Power Control: 5V Single Channel Relay Module
Audible Alarm: 5V Active Buzzer
Visual Indicator: 5mm Red LED
Ventilation System: 5V DC Cooling Fan
Voltage Regulator: LM7805 5V Regulator IC
Power Source: 2 Slot 18650 Battery Holder with 3.7V Li-Ion Batteries
Charging Circuit: Type-C 2S 8.4V Lithium Battery Charger Board
Power Switch: SPST Rocker Switch]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_6c8c3fb1960155ec656caca1d4c9e1d3.webp" length="48724" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_6c8c3fb1960155ec656caca1d4c9e1d3.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:43 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Single Axis Solar Sun Tracker with Voltage Display]]></title>

                    <link>https://scienceproject.bd/en/single-axis-solar-sun-tracker-with-voltage-display-277</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/single-axis-solar-sun-tracker-with-voltage-display-277</guid>

                    <description><![CDATA[Automatic Solar Sun Tracker with Smart Day-Night Light Control
Overview: The Automatic Solar Sun Tracker with Smart Day-Night Light Control from Bigyan Project is an advanced educational science project that tracks sunlight and generates power efficiently. The system automatically rotates the solar panel toward the sunlight using dual 5mm LDR sensors. When sunlight is detected, a red 5mm LED indicator glows to show that the battery is charging, and the LCD display shows the generated voltage in real time. When sunlight is absent, the LCD display turns blank, the red charging LED turns off, and the connected home LED light automatically turns on, acting as a smart night lamp. This makes the project not only educational but also functional and practical for real-world learning on solar automation.
Specifications:

Tracking Type: Single Axis Automatic Sun Tracking
Main Controller: Arduino Uno R3
Light Sensor: 2pcs 5mm GL5516 LDR Photoresistor
Solar Panel: 5V 0.75W (99x69mm)
Display: 16x2 LCD Display with I2C Module
Servo Motor: MG90s RC 9g Semi-Metal Gear (180° rotation)
Indicator LED: 5mm Red LED for Charging Indication
Night Light: Automatic LED Light for Day-Night Switching
Battery: 2pcs 18650 3.7V Li-Ion Rechargeable Battery
Battery Holder: 2-Chamber 18650 Case
Charging Module: Type-C 2S 8.4V Lithium Battery Charger Board
Voltage Regulator: 3pcs LM7805 IC for 5V Output
Switch: 6 Pin Slide Power Switch
Frame: 5MM PVC Plastic Board
Wiring: 1.6mm Slim 22AWG Cable
Power Source: Solar Panel and Rechargeable Battery]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_1fc4314f05b651984cd55bb486f746b6.webp" length="39450" type="image/jpeg"/>

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                    <pubDate>Mon, 18 May 2026 11:21:42 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Arduino 360deg Ultrasonic Radar Science Project]]></title>

                    <link>https://scienceproject.bd/en/arduino-360deg-ultrasonic-radar-science-project-282</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/arduino-360deg-ultrasonic-radar-science-project-282</guid>

                    <description><![CDATA[DIY Arduino 360deg Ultrasonic Radar Project Kit
Build your own 360-degree Radar System with this complete DIY science project kit. Designed for students and hobbyists, this project is an excellent way to learn about Arduino, sensors, and data visualization. The radar uses two HC-SR04 ultrasonic sensors mounted on an MG90s servo motor to scan the entire 360-degree surroundings. The Arduino Uno R3 controller processes the data and sends it to your laptop. Using the Processing app, you can see a live visual radar screen showing all the objects detected around you. This hands-on project is perfect for science fairs or learning advanced robotics.
Specifications

Controller: Arduino Uno R3 SMD Development Board
Sensor: 2 pcs HC-SR04 Ultrasonic Sensor Module
Motor: 1 pc MG90s RC 9g Servo Motor (180° Rotation)
Body Construction: Large Hot Melt Glue Gun Sticks
Wiring: Male-Female Jumper Wires
Visualization: Processing App (Requires Laptop)]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_8bd66ea65f343218dafa86b10c52abd8.webp" length="50318" type="image/jpeg"/>

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                    <pubDate>Mon, 18 May 2026 11:21:42 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Firefighting Robot Car with Dual Mode and Camera]]></title>

                    <link>https://scienceproject.bd/en/firefighting-robot-car-with-dual-mode-and-camera-278</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/firefighting-robot-car-with-dual-mode-and-camera-278</guid>

                    <description><![CDATA[Firefighting Robot Car with Live Camera & Auto Mode
This Firefighting Robot Car is a complete science project kit for students. It detects fire using three flame sensors and avoids obstacles using three ultrasonic sensors. The robot has two operating modes  Manual and Auto. In Manual mode, you can control it via a mobile app using Bluetooth (HC-06). In Auto mode, it automatically detects fire, starts the water pump, sweeps the nozzle with an MG90s servo, and moves forward slightly to extinguish the flame. You can also view the live action through the ESP32-CAM camera module.
Key Features

Three flame sensors for left, center, and right fire detection
Three HC-SR04 ultrasonic sensors for obstacle avoidance
Manual and Auto mode selection through mobile app
HC-06 Bluetooth module for wireless control
ESP32-CAM for live video feed
Mini submersible water pump with transistor control and flyback diode
MG90s servo motor for nozzle rotation
4 × 100 RPM TT gear motors with 65mm wheels
5V power regulation through XL4016 step-down converter
Powered by 4 × 18650 Li-ion batteries in 4S holder

Specifications

Main Controller: Arduino Uno R3 SMD
Bluetooth Module: HC-06
Camera: ESP32-CAM OV2640
Flame Sensors: 3 (Left, Center, Right)
Ultrasonic Sensors: 3 × HC-SR04
Motors: 4 × 100 RPM TT Dual Shaft DC Motor
Motor Driver: L298N Module
Servo: MG90s 9g Servo (180°)
Pump: Mini DC 36V 100L/H Water Pump
Power: 4 × 18650 Rechargeable Batteries (4S)
Voltage Regulator: XL4016 Buck Converter (5V Output)
Frame: 5mm PVC 4-Wheel Chassis
Switch: 2 Pin Rocker Switch (ON/OFF)

Usage Tips

Test all sensors in Manual mode before using Auto mode.
Use a proper 4S BMS charging module for battery safety.
Trigger ultrasonic sensors sequentially to avoid interference.
Calibrate flame sensor sensitivity before demonstration.]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_9ae87038fe00357b02f8559b2311cb5a.webp" length="61426" type="image/jpeg"/>

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                    <pubDate>Mon, 18 May 2026 11:21:42 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[IoT Based Gas and Fire Alarm System with Smart Safety]]></title>

                    <link>https://scienceproject.bd/en/iot-based-gas-and-fire-alarm-system-with-smart-safety-279</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/iot-based-gas-and-fire-alarm-system-with-smart-safety-279</guid>

                    <description><![CDATA[IoT Gas & Fire Alarm Kit with Smart Safety
Product Overview: This ready-to-use student project kit detects gas leaks and flames, sends instant notifications to your mobile via the Blink IoT app using an ESP8266, sounds a local alarm, runs a 5V fan to ventilate, and actuates an MG995 servo to turn off the gas regulator. Battery backup is provided by two 18650 cells with a Type-C charging board and a buck converter for stable 5V supply. Ideal for science fairs and educational demonstrations.
Introduction: The kit combines easy-to-use sensors like the MQ-2 gas sensor and a flame sensor module with Wi-Fi connectivity for remote alerts. Built with student-friendly components and clear wiring, it demonstrates an end-to-end IoT safety system  detection, notification, local alarm, ventilation, and automatic shutoff control.
Specifications

Sensors: MQ-2 gas sensor module (combustible gases), Flame sensor module
Microcontroller / Connectivity: ESP8266 (Wi-Fi)  works with Blink IoT app
Actuators: MG995 180° metal-gear servo (gas regulator control), 5V active buzzer (alarm)
Ventilation: 5V DC cooling fan (automatic on gas detection)
Power: 2 × 18650 cells (series 2S  8.4V nominal), Type-C 2S charger board
Voltage Regulation: LM2596 buck converter to 5V for MCU, sensors, and servo
Switching & Control: SPST rocker switch for main power; MOSFET/driver recommended for switching loads
Frame & Wiring: 5mm PVC board frame, 22AWG wiring, screw terminals
Dimensions (approx.): kit board ~150×100×40 mm (frame size may vary)
Use Case: Educational demo / science fair project  IoT alerts + local mitigation]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:42 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Electricity Generation Road Project Using Piezo Sensor]]></title>

                    <link>https://scienceproject.bd/en/electricity-generation-road-project-using-piezo-sensor-280</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/electricity-generation-road-project-using-piezo-sensor-280</guid>

                    <description><![CDATA[Road Piezo Electricity Generator  Portable Demo Unit
This compact science project converts footstep and vehicle pressure into usable electrical energy using 35mm prewired piezo discs. Generated pulses are harvested, rectified and stored in a 2×18650 battery pack. The system includes an Arduino Uno R3 with an I2C 16×2 LCD to display live voltage and status. A rocker SPST switch controls output, and onboard regulation provides 5V for the Arduino and peripherals. This unit is designed as a classroom demo, DIY exhibit, or shop demo to show energy harvesting from everyday movement.
Specifications

Piezo Sensors: 3 × 35mm Prewired Piezo Disc
Energy Storage: 2 × 18650 Li-ion cells (series configuration  7.4V nominal, 8.4V full)
Battery Holder: 2-Chamber 18650 Battery Holder Case
Controller: Arduino Uno R3 SMD Development Board (with USB cable)
Display: 16×2 LCD with I2C adapter (White on Blue)
Switch: 2-Pin Rocker Switch (SPST ON/OFF)
Regulation: 5V output for Arduino via a regulated module (recommended switching regulator)
Protection & Charging: Requires proper Li-ion charging/BMS (use 2S BMS or charge with appropriate 2S charger)
Interconnect: 1.6mm Slim 22 AWG cable for piezo wiring
Indicator: 5mm white LED for road illumination/status
Mounting: 5mm PVC plastic board for electronics mounting
Output Behavior: Pulsed AC from piezos  rectified DC  stored in batteries; usable for low-power LEDs and Arduino display
Notes: Actual harvested energy varies with foot/vehicle pressure and installation; system requires proper rectification and charging circuitry for safe operation]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:42 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Bluetooth & Voice Control DIY Science Robotic Car Project]]></title>

                    <link>https://scienceproject.bd/en/bluetooth-and-voice-control-diy-science-robotic-car-project</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/bluetooth-and-voice-control-diy-science-robotic-car-project</guid>

                    <description><![CDATA[DIY Bluetooth & Voice Control Science Fair Robotic Car Project
Build your own Bluetooth and Voice Controlled Robotic Car Project  a fun and educational DIY Science Project for students and beginners. This smart robotic car can be controlled using your smartphone via Bluetooth or through simple voice commands. It helps students understand real-world concepts like robotics, motor control, sensors, and wireless communication. Perfect for school exhibitions, science fairs, and robotics learning enthusiasts in BD.
Overview
This DIY Science Robotic Car Project uses an Arduino Uno as the main controller with an L298N motor driver to manage four geared motors. It features an HC-06 Bluetooth module for wireless communication and a LM2596 buck converter to supply regulated voltage to the control circuit. The car is powered by a 3-cell 18650 battery pack and can easily be switched on or off using a rocker switch. Students can control the movement and speed using a mobile app or voice commands, making it an excellent educational and practical robotics experience.
Specifications

Control Type: Bluetooth and Voice Command
Main Controller: Arduino Uno R3 (SMD)
Motor Driver: L298N Dual H-Bridge Module
Motors: 4 × 100 RPM 36V TT Dual Shaft BO Motors
Wheels: 4 × 65mm Rubber Robot Wheels
Bluetooth Module: HC-06 Serial Transceiver
Power Supply: 3 × 18650 3.7V Li-Ion Rechargeable Batteries
Voltage Regulation: LM2596 Buck Converter (12V to 5V)
Chassis Material: 5MM PVC 4-Wheel Robot Frame
Switch: 2-Pin Rocker Switch (ON/OFF)
Wiring: 1.6mm Slim 22AWG Cable
Assembly: Uses strong glue stick bonding for durable fitting
Suitable For: Students, beginners, and school science fairs]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:42 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Dual Axis Solar Tracker Arduino Uno DIY Project]]></title>

                    <link>https://scienceproject.bd/en/dual-axis-solar-tracker-arduino-uno-diy-project</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/dual-axis-solar-tracker-arduino-uno-diy-project</guid>

                    <description><![CDATA[Arduino Uno Dual Axis Solar Tracking Project System
This dual axis solar tracker project is designed for science fair and university final year submissions. Using Arduino Uno, LDR sensors, and servo motors, the system automatically tracks sunlight from left to right and up to down to maximize solar energy generation. An LCD display shows real-time generated voltage, while temperature-based cooling ensures stable operation.
Specifications

Controller: Arduino Uno R3 SMD Development Board
Solar Panel: 5V 0.75W Solar Panel
Tracking: Dual Axis (Left-Right and Up-Down)
Sensors: 4pcs GL5516 LDR, NTC Temperature Sensor Module
Motors: 2pcs MG90S Metal Gear Servo Motor (180°)
Display: 16x2 LCD with I2C Adapter
Power: 2pcs 18650 3.7V Li-Ion Battery with Holder
Power Regulation: LM2596 DC Step-Down Module (5V)
Cooling: 5V DC Cooling Fan (40x40x7mm)
Lighting: 1W Cool White COB LED (Auto Day-Night, Manual Indoor)
Body Material: 5mm PVC Board]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:41 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Multi-Sensor IoT Safety Project Using ESP32]]></title>

                    <link>https://scienceproject.bd/en/multi-sensor-iot-safety-project-using-esp32</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/multi-sensor-iot-safety-project-using-esp32</guid>

                    <description><![CDATA[ESP32 IoT Home Safety Kit  Flame NHR0057 & Multi-Sensors
Overview: A compact IoT smart-home safety kit built around the ESP32 with real-time alerts to the Blynk mobile app and local warnings on a 16x2 I2C LCD. Detects flame, gas, high temperature, and overcurrent to trigger alarms, fans, and a relay cutoffideal for science fairs and final-year projects.
Specifications

Core: ESP32 WiFi & Bluetooth Development Board
Flame sensor: Flame Sensor Module NHR0057
Temperature sensor: NTC 3-pin temperature sensor
Gas sensor: MQ-2 Gas Sensor Module
Current sensing: ACS712 Current Sensor Module 5A
Display: 16x2 LCD with I2C adapter
Power: 2 × 18650 3.7V Li-Ion batteries, 2-chamber holder
Voltage regulation: 2 × LM2596 Buck modules (5V and 3.3V)
Actuators & alarms: 5V active buzzer, 5V DC cooling fan, 5V single-channel relay
Control components: 2 × BC547 transistors, 1 k base resistor
Adjustable threshold: 10 k potentiometer for max-current setpoint
Switching & wiring: 2-pin SPST rocker switches, 22AWG wiring, PVC project board
Behavior: Blynk notifications + LCD warnings; auto fan on high temp; buzzer and relay cutoff on flame or overcurrent]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:41 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Automatic Tree Watering Project with Pump & Sensor]]></title>

                    <link>https://scienceproject.bd/en/automatic-tree-watering-project-with-pump-and-sensor</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/automatic-tree-watering-project-with-pump-and-sensor</guid>

                    <description><![CDATA[Tree Irrigation Kit with 3-6V Pump & TP4056
Automatic Tree Watering Project  a compact smart irrigation kit that waters trees automatically using a Soil Moisture Sensor to detect soil moisture and a Mini Submersible Water Pump (DC 3-6V 100L/H) to deliver water. Easy to power from a powerbank or mobile charger via the TP4056 1A Li-Ion Charger and controlled with a 5V Single Channel Relay Module.
Specifications

Sensor: Soil Moisture Sensor (analog/digital compatible)
Pump: Mini Submersible Water Pump, DC 3-6V, 100L/H
Pipe: 6mm inner diameter PVC pipe (compatible with pump outlet)
Control: 5V Single Channel Relay Module (for pump switching)
Power management: TP4056 1A Li-Ion Battery Charger Module (for powerbank/charger use)
Cabling: Slim flexible project wire cable for connections
Use case: Automatic watering for trees and small plants, DIY smart irrigation]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:41 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Smart Object Detection Alarm Project]]></title>

                    <link>https://scienceproject.bd/en/smart-object-detection-alarm-project-274</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/smart-object-detection-alarm-project-274</guid>

                    <description><![CDATA[Portable DIY Object Detection Alarm Kit (BC557, TP4056)
Overview: A compact DIY object-detection alarm kit that uses an R Obstacle Avoidance Sensor Module and a BC557 transistor to boost the trigger signal. When an object is detected the 5V active buzzer sounds. Powered by a single 18650 rechargeable cell with TP4056 charging and a 3.7V5V boost converter for stable 5V outputideal for school science projects and small online shop listings.
Specifications

Sensor: R Obstacle Avoidance Sensor Module (object detection)
Transistor: BC557 PNP (signal boost)
Buzzer: 5V Active Buzzer (alarm output)
Base resistor: 1 k (limits transistor base current)
Battery: 18650 Rechargeable 3.7V Li-Ion cell (solderable)
Battery holder: 1-chamber 18650 holder
Charger: TP4056 1A Li-Ion charging module
Power conversion: 3.7V to 5V Multi-Function Mini Boost Step-Up Module
Switch: 6-pin slide switch 50V 0.5A DPDT (power on/off)
Interconnect: Slim flexible project wire cable
Use case: DIY science project, educational demo, portable alarm prototype]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:41 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Worker & Bike Rider Safety Helmet with Accident Alert and GPS Tracking]]></title>

                    <link>https://scienceproject.bd/en/worker-and-bike-rider-safety-helmet-with-accident-alert-and-gps-tracking</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/worker-and-bike-rider-safety-helmet-with-accident-alert-and-gps-tracking</guid>

                    <description><![CDATA[Smart Helmet with Impact Sensor, GPS & GSM Alert
Worker & Bike Rider Safety Helmet that detects head impacts using a 4-pin momentary tactile switch and immediately sends an SMS with live GPS location. The system uses an Arduino Nano R3 to process the trigger, GY-NEO6MV2 (NEO-6M) for positioning and SIM800L for GSM alerts. Battery-powered with onboard power regulation for stable 5V to the Arduino and 3.7V for the GSM module.
Specifications

Trigger sensor: 4-Pin Momentary Tactile Push Button Switch, 12x12mm
Microcontroller: Arduino Nano R3 (ATmega328)
GPS module: GY-NEO6MV2 (NEO-6M) with antenna
GSM/GPRS module: SIM800L with antenna (sends SMS with live location)
Power source: 2 × 18650 Li-Ion cells (3.7V nominal) in 2-cell holder
Power regulation: LM2596 Buck Converter(s) for 5V (Arduino) and 3.7V rail for SIM800L as configured
Charger: Dual-slot 18650 lithium battery charger (external accessory)
Power control: 2-Pin Rocker Switch
Wiring: Slim flexible project wire cable for internal connections
Alert method: Immediate SMS with GPS coordinates when impact is detected
Assembly notes: Arduino reads push button state, debounces, then triggers GPS read + SIM800L SMS transmit]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:41 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[AC - DC Current Monitoring Project with ACS712 and LCD Display]]></title>

                    <link>https://scienceproject.bd/en/ac-dc-current-monitoring-project-with-acs712-and-lcd-display-276</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/ac-dc-current-monitoring-project-with-acs712-and-lcd-display-276</guid>

                    <description><![CDATA[Portable AC/DC Current Monitor with ACS712 & I2C LCD
Overview: Compact AC/DC current measuring project using the ACS712 5A sensor and Arduino Nano R3 (ATmega328). Users set a maximum current limit with a 10K potentiometer; the unit shows both the set limit and real-time load current on a 16x2 White-on-Blue LCD via an I2C adapter. When the load exceeds the limit, the display indicates the event and a 5V active buzzer sounds an alarm. Powered and charge-ready using a TP4056 1A Li-Ion charger module.
Specifications

Current sensor: ACS712 (5A)
Microcontroller: Arduino Nano R3 (ATmega328)
Limit adjuster: 10K potentiometer (variable resistor)
Display: 16x2 LCD (White on Blue) with I2C LCD adapter
Alarm: 5V Active Buzzer  Loud Beep
Power/charging: TP4056 1A Li-Ion battery charger module
Wiring: Slim flexible project wire cable
Features: User-set max current limit, real-time current readout, visual alert and audible alarm on overcurrent
Use: DIY electronics, teaching demo, small load monitoring]]></description>

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                    <pubDate>Mon, 18 May 2026 11:21:41 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Arduino 360° Ultrasonic Radar Science Project]]></title>

                    <link>https://scienceproject.bd/en/arduino-360deg-ultrasonic-radar-science-project-265</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/arduino-360deg-ultrasonic-radar-science-project-265</guid>

                    <description><![CDATA[Arduino Based 360 Degree Ultrasonic Radar Detection Project
This 360° ultrasonic radar project is a complete Arduino-based science project designed for students and science fair submissions. Using dual HC-SR04 sensors and a rotating servo system, it scans the surroundings and detects objects within 050 cm. When an object comes within 20 cm, it triggers an audible alert. The system also provides a real-time graphical radar display through Processing software, showing both distance and direction clearly.
Specifications

Controller: Arduino Uno R3 SMD
Sensors: 2x HC-SR04 Ultrasonic Sensor
Rotation: MG90S 180° Servo Motor (dual-side scanning for 360°)
Detection Range: 050 cm
Alert Distance: 20 cm with active buzzer
Display: Real-time radar visualization using Processing software
Structure: 5mm PVC board frame
Wiring: Flexible project wires
Cable Management: Nylon cable zip ties
Assembly: Hot glue gun sticks]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_4c9c8ffcb31a3b0d4307777176786342.webp" length="42410" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_4c9c8ffcb31a3b0d4307777176786342.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:40 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Arduino Smart Fire & Gas Safety System Call & SMS]]></title>

                    <link>https://scienceproject.bd/en/arduino-smart-fire-and-gas-safety-system-call-and-sms</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/arduino-smart-fire-and-gas-safety-system-call-and-sms</guid>

                    <description><![CDATA[Arduino GSM Based Fire and Gas Leakage Alarm System with RFID Door Lock
Arduino Smart Fire & Gas Safety System is a multi-sensor home protection project designed to detect fire flames and LPG/smoke leakage automatically. When danger is detected, the system activates a buzzer alarm, starts a water pump for fire suppression, cuts main power using relay, and sends alert via mobile call and SMS through SIM800L GSM module. It also includes an RFID based smart door lock and automatic ventilation fan for improved household safety.
Specifications

Controller: Arduino compatible board
Flame Sensor Module: NHR0057 4-Pin
Gas Sensor: MQ-2 Smoke & Gas Leakage Sensor
GSM Module: SIM800L (Call & SMS alert)
Door Security: RC522 RFID module with SG90 servo lock
Alarm: 5V Active Buzzer
Fire Suppression: Mini Submersible Water Pump
Power Cutoff: 5V Single Channel Relay Module
Motor Driver: D882 NPN Transistor with base resistor
Voltage Regulation: LM2596 Buck Converter (5V output)
Power Source: 2× 18650 Li-Ion rechargeable batteries
Additional Safety: Exhaust cooling fan activation during gas leakage
Body Material: 5mm PVC board enclosure]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_ba2b17897b900198a1020caef3d4c608.webp" length="38340" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_ba2b17897b900198a1020caef3d4c608.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:40 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[ESP32 Smart Solar Tracking System with Mobile App]]></title>

                    <link>https://scienceproject.bd/en/esp32-smart-solar-tracking-system-with-mobile-app</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/esp32-smart-solar-tracking-system-with-mobile-app</guid>

                    <description><![CDATA[ESP32 IoT Smart Solar Tracking Project with Mobile App
This ESP32-based smart solar sun tracker project is designed for students and university final year submissions. The system automatically tracks sunlight using LDR sensors, rotates the solar panel with a servo motor, and displays live voltage and temperature data on both a mobile app and LCD display. An automatic cooling water pump activates when temperature rises, making the project practical and innovative.
Specifications

Main Controller: ESP32 WiFi and Bluetooth Development Board (CP2102)
Solar Panel: 5V 0.75W Solar Panel
Sun Detection: 2pcs GL5516 LDR Photoresistors
Panel Rotation: MG90S Metal Gear Servo Motor (180°)
Power Supply: 3pcs 18650 Li-Ion 3.7V Batteries with Holder
Voltage Regulation: 2pcs LM2596 Buck Converter (3.3V and 5V)
Display: 16x2 LCD with I2C Adapter
Temperature Sensor: NTC 3-Pin Temperature Sensor Module
Cooling System: 36V Mini Submersible Water Pump with PVC Pipe
Relay Control: 5V Single Channel Relay with BC547 Transistor Driver
Lighting: 1W Cool White COB LED (App Controlled)
Frame Material: 5mm PVC Board]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_e46b42b34c061003d87aa33a40663bc0.webp" length="54994" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_e46b42b34c061003d87aa33a40663bc0.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:40 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Footstep Piezo Power Generator Arduino Project]]></title>

                    <link>https://scienceproject.bd/en/footstep-piezo-power-generator-arduino-project</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/footstep-piezo-power-generator-arduino-project</guid>

                    <description><![CDATA[Footstep Based Piezo Energy Harvesting Arduino Science Project
This footstep piezo power generator science project demonstrates how everyday pressure from walking or vehicles can be converted into usable electrical energy. Using piezo discs, harvested energy is rectified, stored in Li-ion batteries, and monitored by an Arduino Uno with a 16×2 I2C LCD. LED brightness varies with applied pressure, making it ideal for classroom demonstrations, exhibitions, and DIY learning.
Specifications

Piezo Sensors: 3 × 35mm prewired piezo discs
Energy Storage: 2 × 18650 Li-ion cells (7.4V nominal)
Controller: Arduino Uno R3 SMD
Display: 16×2 LCD with I2C adapter
Output Regulation: Regulated 5V for Arduino and peripherals
Indicator: 5mm white LED with pressure-based brightness
Switch: SPST rocker ON/OFF switch
Mounting: 5mm PVC board for electronics]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_e17e1e62b3fd073d1333887793ae36a3.webp" length="37354" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_e17e1e62b3fd073d1333887793ae36a3.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:40 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Arduino Gyroscope Controlled 4 Wheel Robot Science Project]]></title>

                    <link>https://scienceproject.bd/en/arduino-gyroscope-controlled-4-wheel-robot-science-project</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/arduino-gyroscope-controlled-4-wheel-robot-science-project</guid>

                    <description><![CDATA[Arduino MPU-6050 Gyroscope 4 Wheel Robot Science Project
This Arduino-based gyroscope controlled 4 wheel robot science project is designed for students and robotics learners. The system uses hand gesture control through the GY-521 MPU-6050 motion sensor to detect tilt movements and wirelessly control robot direction. It is an ideal practical project to understand sensors, motor control, and embedded programming.
Specifications

Controller: Arduino Uno R3 SMD Development Board
Motion Sensor: GY-521 MPU-6050 6-Axis Gyroscope & Accelerometer
Motor Driver: L298N Dual H-Bridge Motor Driver Module
Motors: 4 × 100 RPM 36V TT Dual Shaft DC Gear Motor
Wheels: 4 × 65mm Robot Wheels
Chassis: 5mm PVC 4 Wheel Robot Car Chassis
Power Supply: 2 × 18650 Rechargeable 3.7V Batteries
Battery Holder: Dual 18650 Battery Holder Case
Switch: 2 Pin Rocker Switch]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_daf8a38006199c0c0bb060d953d979f5.webp" length="41570" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_daf8a38006199c0c0bb060d953d979f5.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:40 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[ESP32 Footstep Power Generator Science Project]]></title>

                    <link>https://scienceproject.bd/en/esp32-footstep-power-generator-science-project</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/esp32-footstep-power-generator-science-project</guid>

                    <description><![CDATA[ESP32 Piezo Footstep Energy Harvesting Project Kit
This ESP32-based footstep power generation project demonstrates how mechanical pressure can be converted into usable electrical energy using piezo sensors. Designed for science fairs and university final year submissions, the system detects footsteps, stores generated energy in Li-Ion batteries, and displays real-time status through an LCD and LED indicator.
Specifications

Main controller: ESP32 WiFi and Bluetooth Development Board (CP2102)
Footstep sensing: 3 pcs 35mm prewired piezo disc sensors
Energy storage: 2 pcs 18650 rechargeable 3.7V Li-Ion batteries
Battery holder: 2-chamber 18650 battery holder case
Power regulation: LM2596 DC step-down buck converter (5V output)
Power control: 6-pin DPDT slide switch (50V 0.5A)
Display: 16x2 LCD with I2C adapter module
Output indicator: 5mm green LED (pressure-dependent glow time)
Noise filtering: 3 pcs 10k resistors for piezo signal bypass
Prototyping: 400-point solderless breadboard
Structure: 5mm PVC plastic board frame]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_8bc5d0a938516a9876d5d86d794f3373.webp" length="33124" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_8bc5d0a938516a9876d5d86d794f3373.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:40 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Arduino Smart Dustbin Science Project with HC-SR04]]></title>

                    <link>https://scienceproject.bd/en/arduino-smart-dustbin-science-project-with-hc-sr04</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/arduino-smart-dustbin-science-project-with-hc-sr04</guid>

                    <description><![CDATA[Arduino Automatic Smart Dustbin Science Project Kit
The Smart Dustbin Science Project Kit is an engaging Arduino-based project designed for school, college, and science fair activities. Using an HC-SR04 Ultrasonic Sensor, the dustbin detects objects within 20cm and automatically opens the lid using an SG90 Servo Motor. After placing waste, the lid closes automatically, creating a hands-free smart dustbin experience while helping students learn automation, sensors, and robotics concepts.
Specifications

Project Type: Smart Dustbin Science Project
Main Controller: Arduino Uno R3 SMD
Sensor: HC-SR04 Ultrasonic Sensor Module
Detection Distance: Up to 20cm
Motor: SG90 Micro Servo Motor 180 Degree
Charging Module: TP4056 1A Li-Ion Battery Charger Type-C
Connection Wire: Slim Flexible Project Wire Cable
Assembly Materials: Hot Melt Glue Stick and Nylon Cable Zip Ties
Included: Dustbin Bucket
Power Source: Powerbank Required (Not Included)]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_7d979de96d0bf0d02a6fa6fc940b1c59.webp" length="20632" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_7d979de96d0bf0d02a6fa6fc940b1c59.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:39 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[180 Degree Ultrasonic Radar Project with TFT LCD]]></title>

                    <link>https://scienceproject.bd/en/180-degree-ultrasonic-radar-project-with-tft-lcd</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/180-degree-ultrasonic-radar-project-with-tft-lcd</guid>

                    <description><![CDATA[Arduino Based 180 Degree Ultrasonic Radar Project Kit
Arduino Based 180 Degree Ultrasonic Radar Project Kit is an exciting DIY science project designed for students, robotics enthusiasts, and electronics learners. This project uses the HC-SR04 Ultrasonic Sensor to detect nearby objects and displays object direction and distance on a 2.4 Inch TFT LCD Display. The SG92R Servo Motor rotates the sensor for 180° radar scanning, while the active buzzer provides an alert when an object comes within 20cm range.
Specifications

Main Controller: Arduino Uno R3 SMD
Distance Sensor: HC-SR04 Ultrasonic Sensor Module
Servo Motor: SG92R 9g Micro Servo 180 Degree
Display: 2.4 Inch TFT LCD Touch Display
Alarm System: 5V Active Buzzer
Detection Distance: 20cm Alert Range
Body Material: 5MM PVC Plastic Board
Assembly Materials: Zip Ties, Flexible Wire, Hot Glue Stick
Project Type: DIY Science and Robotics Project
Suitable For: Students, STEM Learning, Science Fair Projects]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_1cc09d3365b4c1a712db66d3b74e8316.webp" length="53752" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_1cc09d3365b4c1a712db66d3b74e8316.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:39 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[RFID Dual Card Servo Control Project with Alarm]]></title>

                    <link>https://scienceproject.bd/en/rfid-dual-card-servo-control-project-with-alarm</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/rfid-dual-card-servo-control-project-with-alarm</guid>

                    <description><![CDATA[Dual RC522 RFID Arduino Servo Access Control System
This dual RFID servo control system is a complete DIY security project using two RC522 RFID modules and dual Arduino boards. It allows independent card-based access where valid cards rotate servo motors from 0° to 90°, and invalid cards trigger a buzzer alarm. Ideal for door lock systems, parking control, school gates, office access, and smart security projects.
Specifications

RFID Module: 2x RC522 RFID Reader
Controller: Arduino Uno + Arduino Nano
Servo Motor: 2x MG90S Metal Gear Servo (180°)
Control System: Dual card-based independent control
Alarm System: Buzzer for invalid card detection
Power Supply: 2x 18650 Li-Ion 3.7V Battery
Battery Holder: Dual 18650 Battery Case
Voltage Conversion: LM2596 Buck Converter (Step-down to 5V)
Switch: 6 Pin Slide Switch (50V 0.5A DPDT)
Communication: Arduino Nano to Arduino Uno signal control
Wiring: Slim Flexible Project Wire Cable
Cable Management: Nylon Cable Zip Ties]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_53bcdb6e3d55350db4941da01a7d041c.webp" length="58322" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_53bcdb6e3d55350db4941da01a7d041c.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:39 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
                            <item>
                    <title><![CDATA[Smart Firefighting Robot Car with Auto & Manual Mode]]></title>

                    <link>https://scienceproject.bd/en/smart-firefighting-robot-car-with-auto-and-manual-mode</link>
                    <guid isPermaLink="true">https://scienceproject.bd/en/smart-firefighting-robot-car-with-auto-and-manual-mode</guid>

                    <description><![CDATA[Bluetooth Fire Fighting Robot Car Kit Arduino Auto Manual
This smart firefighting robot car is designed for students, science fairs, and university projects. It features both manual and automatic modes, allowing users to control the robot via Bluetooth or let it automatically detect and extinguish fire. With multiple flame sensors, a water pump system, and servo-controlled nozzle, it provides a complete hands-on learning experience in robotics and automation.
Specifications

Control Modes: Manual (Bluetooth) and Automatic
Controller: Arduino Uno R3
Bluetooth Module: HC-06
Motor Driver: L298N Motor Driver Module
Motors: 4x 100 RPM TT DC Gear Motors
Wheels: 65mm Rubber Wheels (4 pcs)
Chassis: 5MM PVC 4-Wheel Robot Car Frame
Flame Sensors: 3x NHR0057 (Left, Center, Right)
Water Pump: DC 3-6V Mini Submersible Pump (100L/H)
Nozzle Control: MG90S Servo Motor 180°
Relay Module: 5V Single Channel
Power Supply: 4x 18650 Li-ion Batteries
Voltage Regulation: XL4016 Buck Converter (5V output)
Piping: 6mm Inner Dia PVC Pipe
Switch: 6 Pin DPDT Slide Switch]]></description>

                                            <enclosure url="https://scienceproject.bd/uploads/images/202605/image_900x600_ddc090cc35d1ff8400d84a75dbdd655b.webp" length="55352" type="image/jpeg"/>

                        <media:content url="https://scienceproject.bd/uploads/images/202605/image_900x600_ddc090cc35d1ff8400d84a75dbdd655b.webp" medium="image"/>
                    
                    <pubDate>Mon, 18 May 2026 11:21:39 +0600</pubDate>

                    <dc:creator><![CDATA[ShantonuAcharjee]]></dc:creator>

                    
                                    </item>
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