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omega
The Arduino Mega or your power supply? The arduino does have a built in regulator both 5V and 3.3V but the current is tiny, only about 200 mA and 40 mA on the digital pins. Your power supply may have a regulator too, I don't know.
?
omega
The Arduino Mega or your power supply? The arduino does have a built in regulator both 5V and 3.3V but the current is tiny, only about 200 mA and 40 mA on the digital pins. Your power supply may have a regulator too, I don't know.