The passages I wrote on my PC typora ,but there is something wrong when I copy to Utopian editor. - Utopian/ [Arduino basics tutorials] use MQ135 air quality detecting module.md at master · ...

This project connects the MQ135 sensor board to an Arduino-based controller to calibrate your specific board outdoors and then monitor inside air quality, primarily CO2, using one or any combination ...

Pollution of the air is a major problem all around the globe now-a-days. Human activities and natural processes are both potential causes of air pollution. Particles and gases in the atmosphere that ...

The proposed system employs an MQ135 sensor and an Arduino-based mechanism to monitor vehicle emissions at petrol stations. When pollutant levels exceed a predefined threshold, an audio alert is ...