General • Re: On rp2040, reading 2.15V off a 5V voltage divider

Don't totally write off the ADC input resistance, if it was 100k you would get a reading of 2.38V from 5V source..

100k || 10k = 9090.9

9090.9/19090.9 = 0.4762

Then you have resistor tolerances, it can all add up.

Statistics: Posted by pidd — Tue Jan 07, 2025 2:50 am

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