How would I go about getting two Arduino boards to communicate?What I want to achieve is for each board to output one of three states (A, B, C) and for the receiving board to perform a different action dependant on the state of the sending board. I'm totally at ease with the software side of things its hardware advice I need:1. What should I connect to? (tx & rx?)2. How many wires would it take?3. How long could these wires be? Ta for any advice!!!Tom
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