Firefighting Robot Car with Dual Mode and Camera

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 3–6V 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.