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Topic: UNO Power (Read 71 times) previous topic - next topic

RalphGold

I just bought a small external power adapter, (Wally-World PowerLine model 90334, 1300 mA) primarily to power my projects, figured I can power my arduinno from it too. Problem it has fixed voltage outputs. UNO uses 5v input the closest output from this power supply is either 4.5v or 6v. Can I use it with UNO? If so what voltage should I use?

   ...Thanks Ralph

pert

Is there an output setting higher than 6v?

RalphGold

Voltage Available: 12v 9v, 7.5v, 6v, 4.5v, & 3v

pert

Set it to 7.5 V and connect it to the barrel jack on the Uno. This works because there is a voltage regulator connected to the barrel jack that reduced the voltage to 5 V before it reaches the rest of the components of the board, which would be damaged by being powered at 7.5 V.

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