> OT question: which CAD program did you use to produce the schematics? Ye olde cut 'n' paste http://home.clear.net.nz/pages/joecolquitt/circuit_symbols.gif Something I started with ex-lister Ken Webster many years ago I should put it up on piclist.com too wbr -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist