Josh Koffman wrote: > What would happen if I used straight through CAT5 > ethernet cable? Electrically I think it'd be ok, and > since RS232 isn't a differential signal the pairs > shouldn't have to be matched. > > How wrong am I? You can be badly by introducing ground-loops, it depends on the rest of your design. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist