MQ-7 operating voltage - Githubissues

swatish17 / MQ7-Library

MQ7 ppm of CO (Carbon Monoxide) concentration

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Open bill-orange opened 5 years ago

bill-orange commented 5 years ago

Can the MQ-7 sensor run accurately on 3.3 volts? I would like to use this library with an ESP8266 and running the sensor on 5v would be difficult.

swatish17 commented 5 years ago

Yes, you follow the instructions in the Readme.md file, and set the input voltage to 3.3 VDC.