I want to use 2 RS232 hats on 2 arduinos and connect the serial ports to each other, then connect the arduinos to my computer via usb and write something in one COM terminal and want it to show up on the other COMs terminal. However it doesn’t work. The jumpers are connected properly and the code works properly when I use the RS232/USB cable on my computer and Hercules to test it, but when the RS232 hats are connected to each other it doesnt work. How can I make it work?
Hi,
Which model RS232 Hat you are using?