Hi Edward, Go on RS232. You can go beyond 100m easily without problem at 19200bps, for example. You have RC6 and RC7, don't you? Use the UART module and send what you need. If you need some help, count on me. Dennis Crawley Argentina -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.