Measuring CO2 Concentration in Air using Arduino and MQ-135 Sensor

The earth’s Atmospheric CO2 level is increasing day by day. The global average atmospheric carbon dioxide in 2019 was 409.8 parts per million and in October-2020 it is 411.29. Carbon dioxide is a key greenhouse gas and responsible for about three-quarters of emissions. So CO2 level monitoring has also started to gain importance.

[original story: Circuit Digest]

Circuit Digest 13 Nov 05:40