I have and electronics background but have not done much lately can getting back into it.
I need to test RS-232 cables. I would like to be able to use Arduino to do the following but I have not yet connected the dots:
I would like to be able to hit a button have the unit send out a string of characters via RS-232, have it read the string, and the light a Red LED if the comms did not receive the proper string or a Green LED if the string was correct.
I know I need to cross connect the end of the cable to get the loop back part.
The second part of the project (could be separate unit if needed) is do the same as above but with cables that have the USB to RS-232 Chip in the cable. I am not sure how the different chip sets will affect this project. Those different chips may not allow this project to work properly.
Thanks in advance,
Jeff - W7GRV