I have a question about Arduino, if I supply 4.5 V to Arduino and I declare the pin 13 as an output this voltage will be equal ? If supply = 4.5V, OUTPUT = 4.5V If supply = 3V, OUTPUT = 3V If supply = 3.5V, OUTPUT = 3.5V I know it can be checked by a multimeter but I do not have one. Thanks.

Supply voltage=Output

smeezekitty December 13, 2011, 5:01am 3

But with reasonably low loads, it should be about equal.

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