Arduino library for the MQ135 gas sensor

Datasheet

Can be found here

Application

They are used in air quality control equipments for buildings/offices, are suitable for detecting of NH3, NOx, alcohol, Benzene, smoke, CO2, etc

Features

This library has:

• Corrections for temperature and humidity
• Measurements:
  • getResistance
  • getCorrectedResistance
  • getPPM
  • getCorrectedPPM
  • getRZero
  • getCorrectedRZero

More Info

https://hackaday.io/project/3475-sniffing-trinket/log/12363-mq135-arduino-library