> However if I create a final product that has a 5v PIC/circuit, and I want > others to be able to program this product via ICSP. Is it ok to directly > connect this VDD to power supply 5v VDD on all programmers?? no, for instance because there are 3V-only programmers. but no-one known all programmers, so the overall answer must be no. -- Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist