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Author Topic: 5V Output Current on Uno and Nano  (Read 184 times)
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Manchester, NH
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WHat is the output current of the 5V pin on a Nano and Uno? Doesn't appear listed in the board specs. I want to use the 5V output to power a few peripheral chips, pullups, and a couple of LEDs and don't know if I should add a separate 5V regulator or rely on the Arduino's. Appears my circuit will draw about 190mA from 5V pin, but I can increase value of pullup resistors to lower the current if needed.
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Dorset. UK
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This might help you.
http://forum.arduino.cc/index.php?topic=70450.0
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Please don't shoot me, I am just learning...

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190 ma should be no problem. What voltage/power source are you feeding into the 5 volt regulator.
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Good luck, Jack

Manchester, NH
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Oops... just realized I posted this to the Programming and not Projects forum.

Will be powering from a 9V regulator sourced by a 12V wall wart, so input power won't be an issue. So if 450mA is available from the onboard regulator I should be fine.

Thanks!
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