A0 adc limit input?
johndoe71rus opened this issue · comments
johndoe71rus commented
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?
Huang Rui commented
No, you can't use it to measure li-ion battery directly. You'd better use an amplifier to convert the voltage.