AOUT is the Analog output pin of the board that will give us an analog signal which will vary between vcc and ground based on the gas level detected In most Arduino projects, the MQ-2 sensor is used ...

Fig.5. Circuit with relay driver ULN2003 and relay In this proposed project, we have interfaced Arduino Uno with MQ2/MQ6 sensors, SIM900A GSM module, servo motor, buzzer, and LED. The interfacing is ...

Arduino compatible i2c Board * MQ2 Gas Sensor Module * LiquidCrystal Library (give as zip file) * DHT Library (give as zip file) Step 1- Getting the i2c address While working with i2c devices we first ...

The Arduino ... sensors, including the MPU6050 accelerometer for earthquake detection, MQ2 gas sensor for detecting gases, and MH Flame sensor for fire detection, this system aims to provide swift and ...

This article covers an Arduino-based gas detection system that uses an Arduino UNO R3 board and gas sensors like MQ-2, MQ-5, and MQ-6, making it possible to monitor gases present in LPG. Specifically, ...

LPG and natural gas is highly ... area using a MQ2 sensor and any moment a gas leakage due to a vital mistake or pipe crack is sensed, it will immediately turn on a ventilation system for the leaked ...