[Joe Johnson]

Originally Posted by Orborde

I've been reading about how serial communications could be used for Good Things on the robot, and since I haven't figured out quite how to use the TTL/RS232 ports, I thought of writing a serial data transfer thingy for use between two IFI RCs over the Digital I/O ports. So the question is: what happens if I wire a digital IO configured for output directly to one configured for input? Does anything dangerous result? My electronics is a little shaky, so I'm not quite sure whether this might damage the RC.

This should be fine. Actually, when you are debugging, it is sometimes useful to loop the TX and the RX to eachother on one RC. It this way you can send data and check that you get it in the same program.

Joe J.