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Voltage supply for arduino

  1. Oct 10, 2012 #1

    i have an arduino usb 328 and i want to know the supply voltage and current requirement of it.
  2. jcsd
  3. Oct 10, 2012 #2


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    Science Advisor

    This one, which, as per the page, takes 5V from either USB or external adapter?

    The micro only draws a few uA of current (unless you're driving current using the microcontroller). The board probably consumes a few mA of current--the vast majority lighting up the power LED.
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