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AQM II - "cal" connector
werk_ag
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Weather Station: WeatherDuino 4Pro
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#2

31-05-2019, 02:19
Hello Jim,

The connector labelled "cal" is connected to HD pin on the MH-Z19B sensor, used for a manual ZERO point calibration. Usually doing a ZERO point calibration isn't necessary.
For more info refer to MH-Z19B datasheet:

https://www.winsen-sensor.com/d/files/in...ver1_0.pdf
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AQM II - "cal" connector - by Barrow4491 - 30-05-2019, 01:24
RE: AQM II - "cal" connector - by werk_ag - 31-05-2019, 02:19



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