hey am trying to sample an analog input with an Uno but having problems. basically A0 is drawing ridiculous amounts of current, and I don't know why. all the other analog inputs are fine, its just A0. what could cause this? I have a 5V zener on the output to stop it going over-voltage, but I did…

Analog current draw

system April 8, 2012, 11:28pm 6

let me figure this out ,are you trying to put/incert Voltage from a external power supply into a input on the arduino, to measure the supply or something ?

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Analog current draw

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