Tag Archives: chip families

SmartParallel: curing the back-powering problem

And so back to the back-powering problem on my ever-imminent SmartParallel interface board. The issue is that, when the printer is powered on but the SmartParallel board isn’t, voltages coming from the printer via signal lines being held high are part-powering the board. One option was to simply ignore this problem. I find that works for a lot of things… Read more »