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How to operate MG811 CO2 Sensor on ESP32

Posted: Wed Dec 30, 2020 12:45 pm
by os3n6c
Hello,

I have a MG811 CO2 Sensor and want to use it with an ESP32. The MG811 needs 6V Power supply. I guess the ESP32 only supports 3.3V

Is it possible to operate the MG811 with less than 6V e.g. 3.3V ;)

If not, is there any way to get 6V out of the ESP32?

Re: How to operate MG811 CO2 Sensor on ESP32

Posted: Wed Dec 30, 2020 1:20 pm
by ESP_Jan
Hi os3n6c,
based on the specifications the MG811 sensor requires 6.0V ± 0.1V @200mA for its operation.

You will need to have a 6V power supply for this sensor or a voltage regulator.

Feel free to post any follow-up questions

Jan

Re: How to operate MG811 CO2 Sensor on ESP32

Posted: Fri Feb 17, 2023 10:26 pm
by Patrícia Amaral
Olá,

existe uma biblioeca para trabalhar com esse sensor, no Arduino IDE?

Obrigada.