General enquiry, if a Arduino board upload OK, run OK,

without any wiring on it, but upload failed when plugged in all wiring, where should I start to check it?
Thanks
Adam

Look in your Arduino IDE under TOOLS >> PORT and find your device
Then look in the IDE under TOOLS >> BOARD and find your board.

Then, try to compile the no-wires MINIMAL.INO sketch.

Make sure you're not using pins 1&2 (tx/rx).

Pins 0 & 1 maybe?

1 Like

Yeah, thanks for the correction!

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