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nodemcu / nodemcu-devkit-v1.0

MIT License
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A0 adc limit input? #28

Open johndoe71rus opened 7 years ago

johndoe71rus commented 7 years ago

what are the limits of the voltage A0? Usual esp-12x up to 1v, you use a resistive divider at the input. can i measure li-ion battery voltage?

vowstar commented 7 years ago

No, you can't use it to measure li-ion battery directly. You'd better use an amplifier to convert the voltage.