solarwind wrote: > wrote: >> How about RS-485 ? >> Or even half-duplex RS-232 with a diode in each TX output and a >> pull-down to V- ? >> Or the very inexpensive 433MHz RF modules ? > > Where can I get the 433MHz modules? http://www.rentron.com/remote_control/TWS-434.htm How to use it: http://www.rentron.com/Stamp_RF.htm -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist