I have a project running that requires a stepper (the 28BYJ) and I am providing 9v / 1A to the ULN 2003 board. Can I take a feed from that same 12v supply to the Vin pin on the Ardunio? Thanks for any advice, Geoff

Power connections to UNO Vin pin

anon57585045 September 4, 2021, 9:07pm 4

If you haven't left out any details, the answer is yes, you can. How much current on your "couple of LEDs"? I hope you have current limiting resistors there?

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Power connections to UNO Vin pin

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