I'm going to create some custom hardware (with power-source) for the linkpo= rt...so i'm looking for a little info on it. More specifically: how do i = avoid destroying my ti83 linkport? I feel that perhaps a little to much v= oltage or current will have that effect. Also i'd like to know what volta= ge you get from the linkport, and if it gets lower as the batteries grow = old. /David Revelj