i´m having short circuit and ground loops problems, the arduino turns off and overheats, i cannot make communication because of these issues. i´m using the white wires as a button when they touch(input pullup), i have both arduinos connected to the pc at the same time via usb.
second module missing GND connection, if your breadboard depiction is accurate.
Fix that, try it.
If that doesn't work, please show us an actual photo of your setup.
edit - second Arduino also needs connection to the common ground of the first one. Either ground missing will cause your code to fail.
Show a picture of your setup.
Show a picture of your setup, please, because there's nothing obviously wrong with that breadboard arrangement; if that's actually how you have it wired, which I doubt.
Sorry. I meant "photograph."
My camera doesn't work
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