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swatish17 / MQ7-Library

MQ7 ppm of CO (Carbon Monoxide) concentration
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MQ7 sensor from DFRobot #2

Open kyriazis opened 6 years ago

kyriazis commented 6 years ago

DFRobot has encapsulated this sensor on board SEN0132 (https://www.dfrobot.com/wiki/index.php/Carbon_Monoxide_Gas_Sensor(MQ7)_(SKU:SEN0132))

I don't know if you've tested with that sensor board, but do you happen to know how can I go about calibrating the potentiometer on the board (I can only assume that it's wired according to the datasheet)? Any quick-and-easy methodology?

Thank you!

swatish17 commented 6 years ago

I am not sure about the DFRobot. To check the potentiometer, ( think it's a trimpot ) try using multimeter on the pins to measure resistance and changing the R_load value in MQ7.h