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Wall adapter for Arduino USB - SparkFun Electronics

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General suggestions or questions about the SparkFun Electronics website
By signal7
#77396
It may depend on what version of the board you have, but I typically use a 9 or 12 volt supply. The on-board voltage regulator needs a higher input voltage than the actual microcontroller does to operate properly.

I only use the 5VDC adapter when I'm working on a design that lacks a voltage regulator.

Check out the arduino.cc site for the specifications of the board you have.
By brainwav
#77973
Will it work with a car cigarette lighter to USB adapter plugged into the boards USB port??
By trialex
#77988
brainwav wrote:Will it work with a car cigarette lighter to USB adapter plugged into the boards USB port??
Yes