This is an Arduino code that detects using MQ-135 and DHT-11 sensors the amount of carbon dioxide and water vapour in air and triggers a buzzer alarm when their concentration passes safe levels The ...

This Arduino code is designed to read data from five gas sensors connected to an Arduino board. The sensors include MQ8, MQ4, MQ9, MQ7, and MQ135. The code reads analog data from these sensors and ...

LPG is an alternative fuel used for daily use. Due to its low cost and ease of installation. This article covers an Arduino-based gas detection system that uses an Arduino UNO R3 board and gas sensors ...