> Pololu is right down the road from me; running 30+ amps through > PCB traces does worry me a bit, I confess - My 1 milliohm shunt > is ~19" copper #8 AWG, which seems unlikely to contrive a failure There are other variations of the Allegro sensors that do not have the curr= ent sensor run through the chip, and my immediate thought on reading your o= riginal post was to get one of those and tape it to the battery wire, and i= t senses the magnetic field from that. The biggest problem with whatever me= thod you choose will be accuracy at low currents. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .