I am new to all this. I am working on a project and want to send data collected from a Serial port into an arduino and then send that data wirelessly to a Rasberry 3 B+ and populate a data table.
My question is when multiple arduino’s are sending how will it identify which board it came from?
Is this done by sending the data with a unique iD or is there a better way?
Which way is best efficient and scalable to handle this?
Thanks in advance!