> Tsvetan- > Thanks, this is more like it. I'll pass it on to the group. > David > > http://www.olimex.com/kits SCL05/ASM +SCL04K That's going to work out quite expensive isn't it ? $19.95 for the components, but PLUS $24.95 for a pre- programmed (presumably) not-copiable PIC ? That's around NZ$110 - it would have me hesitating Unless they could do you a quantity deal, making your own from the public domain information might be more cost- effective in the long run, particularly if you then start selling on to other train groups. At least that way you might get your own system for nothing -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads