Gas Leak Detector with Auto Gas & Power Cutoff

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