On 7/25/07, jtroxas wrote: > Sorry.. I forgot to mention the need to communicate between several > sensor/slaves.. wont it be too complicated to implrment it over rs-xxx... You can do ring networks with RS-232. A talks to B, B talks to C, etc. Everyone passes packets along unless they are "mine", then I act on them, and pass results on. Packets have a "time to live" that everyone decrements as they pass, when it hits zero we drop the packet. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist