> >Is this a good solution for low power apps, like battery >powered where the PIC will sleep until some time, wake up >to check timers and input pins, then sleep again? That's a little tougher. You can get micropower op-amps, and scale the resistance values up so little current flows. It's the old limbo question, "How low do you need to go?" -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu