Peter van Hoof wrote: > how about replacing the rs232 section with a usb chip similar to the > olimex usb pic boards , it's getting hard to find laptos and pc's with > serial ports I'm thinking of a different prototype board that will be for the new 18F USB PICs and be USB powered. If you just want RS-232 connectivity on a PC that doesn't have a COM port, then what about an off the shelf USB to RS-232 converter? I'm thinking that most of the target audience would either have a PC with COM port, or already have such a converter. Do you think this is a bad assumption? ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist