Control led at pin 13 of Arduino 2 through serial communication from Arduino 1

[pmagowan]

Do you use the button? I don’t see any code for it other than declaring it

If you want blink then upload this and change the digitalwrite ledPin code to your serial code

There is information on using serial here:

Serial Input Basics - updated

Updated Version Please note that this is a revised version of the advice in this earlier Thread which has become very long. As far as possible I have kept the code examples identical or simplifed them slightly. It should not be necessary to refer to the older Thread, but feel free to do so. Contents The following sections are in this Tutorial Introduction Serial data is slow by Arduino standards Example 1 - Receiving single characters Why code is organized into functions Exampl…