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 ...

How do I choose a gas sensor? There are many different types of gas and smoke sensors available in the market. To choose one you need to refer to its datasheet and check if that particular sensor is ...

#ADC121C_MQ2 ADC121C_MQ2ADC121C_MQ2 is a LPG,Propane,Butane,Methane,Alcohol Gas Sensor.ADC121C is a 12-Bit ADC I2C Mini Module. This Device is available from www.ncd ...

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 ...

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 ...