Hi As You know: "Absolute Maximum Ratings DC Current per I/O Pin = 40mA". (Atmel, doc8161.pdf) Next, on http://arduino.cc/en/Tutorial/Blink one can read: "If you've got experience with electronics, you may notice that the LED doesn't have a resistor in series with it. This is because the amount…

Confusing about maximal current per Pin

retrolefty February 5, 2011, 11:26pm 6

I promise to use current limiting resistor on pins.

Our work here is done. Mission accomplished.

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