Simulating serial communication between Arduino

#1 · March 29, 2025, 7:28 pm

Hi to all and thanks in advance.

I'm a newbie and it's sure to be noticeable.
I'm trying to simulate the communication between Arduino as explained in this video:

Individually the two cards seem to work but if I connect them together,

as soon as I start the program it gives me an error and freezes.

error

Can someone give me some suggestions to understand what I'm doing wrong?

Thank you VM

#2 · March 30, 2025, 10:02 am

Hi.

I think you are uploading Mega firmware to Uno.

Load each hex from each Arduino or if you are compiling from the Editor you should choose which board to use: