I need help finding out how to connect twe arduino uno's with a code which I do not know.

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begin_programmer123

Joined Nov 29, 2023
1
For my studies i need to learn how o connect two arduino uno's with wires ifc, but i do not know how to program them that's why I need your help.
the situation is: I have a push button and a LED light wich need to work on different boards. one of the boards needs to send the pushbuttonstat and this where i'm suck so if you can send me a code.BTW : i wil need two codes one for the button and one for the led.
 
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