MQSensorsLib icon indicating copy to clipboard operation
MQSensorsLib copied to clipboard

PPM of MQ135 at clean air

Open PsySc0rpi0n opened this issue 2 years ago • 0 comments

Hi.

Why you guys considered RS / R0 = 3.6 for MQ135 sensor?? Datasheet says constant value of 4.4. Check the following line, please:

https://github.com/miguel5612/MQSensorsLib/blob/27465dfb992595bb5b6bc9c20659333a1bcf4758/examples/Calibration/Calibration.ino#L38

PsySc0rpi0n avatar Sep 06 '22 16:09 PsySc0rpi0n