co2 Sensor connection with arduino

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This topic has 1 reply, 2 voices, and was last updated 10 years, 12 months ago by Prabakaran P M.

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August 22, 2015 at 2:47 pm #3923

Subhash
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hello guys,

i have a question. i bought a CO2 sensor mg811 and i have not got the sensor board. i google a lot but didnt got any relevant result about connecting the sensor with my arduino board for sensing thw gas in ppm. pls guys help me

August 23, 2015 at 8:45 am #13209

Prabakaran P M
Participant

Hi subash,

Connect 1, 3 and 5 pins to the ground. Connect vheat to 5v to enable the heating of sensor. 6 and 4 pins are the output pins of the sensor

which can be connected through lm324 op amp circuit to the analogue pin of the arduino.
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