> > One > > thing I noticed in the schematic is that the Vdd to the device being > > programmed is taken directly from the USB port's +5. This > > being the case, I > > wonder how it manages the PICs with a Vpp-before-Vdd programming > > requirement? > > And how will it cope with an USB to outputs the minimum voltage allowed > by USB specs (IIRC < 4.5V)? > Yeah, and take a look at the kludge of a charge pump for Vpp. Looks like a recipie for disaster to me. -Denny -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist