In my project I need 3 leds. I would like to use on-board leds if possible.

I know how to use PB0 and PD5 red on-board leds, and I would like to hack the board somehow to use the green power led.

If I do not find a way to use the power led from MCU, I'm planning to destroy it anyway, because it is constantly on, which is harmful in my project.

  • refer to the schematic – jsotola Jan 31 '19 at 8:24
  • 1
    The power led is connected directly to the 5V line. So you'd need to modify the board (cut a trace and add a tiny wire). – Gerben Jan 31 '19 at 10:22

There are 34-pin atmega32u4-based boards. They have 3 leds. So use them instead of pro-micro board.

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