Introduction: Tutorial: How to Use Mg811 Co2 Carbon Dioxide Gas Sensor
This tutorial will shows you a few simple steps about how to use Mg811 Co2 Gas Sensor by using Arduino Uno. At the end of this tutorial, you will get a result of comparison when the sensor can detect a motion and could not detect any movement.
This sensor module has an MG-811 on-board as the sensor component. There is an on-board signal conditioning circuit for amplifying output signal and an on-board heating circuit for heating the sensor. The MG-811 is highly sensitive to CO2 and less sensitive to alcohol and CO. It could be used in air quality control, ferment process, in-door air monitoring application. The output voltage of the module falls as the concentration of the CO2 increases.
Carbon dioxide sensor module (with analog signal output, TTL level signals, temperature compensated output).
TTL output valid signal is low. (Low-level signal when the output light can be directly connected to the microcontroller).
Analog output (0 ~ 2V/0-4V) voltage output selectable default hair 0-2V.
Rapid response and recovery characteristics.
The main chip: LM393, carbon dioxide gas sensing probe
Working voltage: DC 6V
Size: 32mm X22mm X30mm L * W * H.