V G wrote: >> Not necessarily. USB voltage at the device can be from around 4.3 to >> 5.5 volts worst case if I remember right. Probably the phone >> contains a >> switcher to charge its battery and you don't need to be right on 5 >> volts in. Give it a try with a variable power supply to test it. > > Yes, I'm going to experiment with voltage on my $700 phone. 1: $700!? Is it gold plated with diamond studded keys? 2: I was trying to help and could provide more suggestions and explanation and clear up a obvious misconception you have, but I've got better things t= o do with my free time than to help people who just get snippy in return. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .