Still need to replace the outdoor sensor, and add inverters to the serial lines on the thermostats (they want rs-232 signalling at TTL levels, not TTL signalling), but it's running the show now! http://www.delorie.com/house/furnace/pcb2/ _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user