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Topic: Using the supply (Read 459 times) previous topic - next topic


Hello, if im using the 5v arduino supply for an analog imput will the arduino also be able to power some LED's without a separate power supply?


Yes. Lots of folks do that.
Read Section 29 of the datasheet and not put too much current thru any 1 port, and limit it to 20mA/pin or LED.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

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