> From: "Carl Ranson" > Hi all, > I've thought of what I think would be a good project for a pic. I would like > to have a 8 channel relay board that is controlled through a standard serial > interface. > ie. PC->Serial->Pic->8*Relay > It would also be nice to have the Pic able to report the status of each > relay back to the host. > Has anyone done a circuit like this already? There's a PICBASIC one on http://www.rentron.com/PIC16F84.HTM which might give you a few ideas to get started. From that one you could drive a high sensitivity relay directly or a standard pcb one via a driver such as one of the ULN 2xxx chips . -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.