This circuit mainly uses MQ2 Smoke/Gas sensor and Arduino to detect and calculate the level of smoke. MQ2 gas sensor is also sensible to LPG, ... Buzzer is connected at Pin D9. And LCD connections are ...

MQ2 Gas Sensor with Arduino and LCD 16x2 using i2c Interface This project helps you to print various proportion of gasses present in the atmosphere. For this particular example we will be measuring ...

This Arduino sketch is designed to monitor environmental conditions using a DHT sensor (temperature and humidity), an MQ2 smoke sensor, and an LCD display. Additionally, it integrates a GSM module ...

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 ...