forum.hobbycomponents.com

Hi,
I have a 5 volt 1 amp power supply which I'd like to use with my Arduino Leonardo board.
I've tested this power supply with my digital meter and it's showing a rock steady 5.1 volt
Would this extra 0.1 volt do my board any damage or should I be able to get away with it?
Thanks.
Regards Dave.

5.1V DC is well within the tolerance so it will not harm you Leonardo at all. The only thing to note is that if you are intending to power the Leonardo via the DC power socket you shpuld power it with at least 6V. This is because there is a 5V regulator connected to the DC socket and this needs a little headroom in voltage to work properly. If you need to use your 5V adaptor you can connect it directly to the Leonardo's 5V and GND pins. Make sure you get the polarity right before doing this of course.

Thanks for that Andrew.
I shall be using a 9 volt battery to power the Arduino.
The 5 volts is for the stepper motor and the 10 turn Pertentiometer
Thanks again.
Regards Dave.