Arduino library for the MQ135 gas sensor
Can be found here
They are used in air quality control equipments for buildings/offices, are suitable for detecting of NH3, NOx, alcohol, Benzene, smoke, CO2, etc
This library has:
- Corrections for temperature and humidity
- Measurements:
- getResistance
- getCorrectedResistance
- getPPM
- getCorrectedPPM
- getRZero
- getCorrectedRZero
https://hackaday.io/project/3475-sniffing-trinket/log/12363-mq135-arduino-library