MQ2 Gas Sensor Analog Reading and LED Alert This project is based on reading analog values from the MQ2 gas sensor using an Arduino. The analog readings are mapped to corresponding gas concentration ...

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 ...

Connected MQ2, MQ135, and flame sensors to digital pins to detect active conditions. Communication Integration: Linked the LoRa transmitter to the Arduino Mega 2560 for transmitting sensor data.

In this article, I have added three sensors with Arduino UNO and user can choose the required sensor with the help of keypad.