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Author Topic: Arduino Uno not providing power?  (Read 1397 times)
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Lancashire, UK
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We had one like this months back on the old forum, turns out he was using a 220K ohm resistor instead of 220 ohms...............

If you don't put a resistor on an LED its the output gate of the Atemega chip that is doing the current limiting, an expensive and fragile substitute for something costs next to nothing. 

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