This code helps interface the MQ2 gas sensor with an Arduino microcontroller. The MQ2 gas sensor detects the levels of LPG, CO and smoke in air. This project can be used in various applications like ...

The application of sensors in smart homes using Arduino to control equipment such as lights, fans, alarms, and so on. Sensors used in Arduino include LDR, Ultrasonic, DHT11, and MQ2. LDR is used to ...