The Grove Gas Sensor (MQ2) module is useful for gas leakage detection (home and industry). It is suitable for detecting H2, LPG, CH4 and CO.
Project showcase by Mahamudul Karim Khondaker
An Arduino Uno with DHT11 sensor module, three LEDs and a Piezo speaker.
Project tutorial by PrinceMatthew
Use ESP-01 and DHT 11 to send temperature and humidity data to the server.
by 4 developers
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