what would be the best way to read the voltage reference voltage in code to update the calculation for sensors. (like a calibration) I have noticed the ref. changes a lot, depending on the power input level and type. for example via USB is around 4.1 volts via V In is around 4.9 volts to calc. …

voltage reference cal.

surepic May 28, 2018, 3:10pm 2

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