> 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?? Thoughts only. YMMV. Try and think if there are conditions where you would find the connection was a bad idea. And then, even if you can't, add two pins with a "shunt", so users can remove the connection if desired. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist