I've hit a snag on a project of mine. I've been trying to build a servo calibrator (to test a servo's limits and test them on robots before they're connected to the motherboard) which should operate by positioning a servo depending on the position of a potentiometer, and display the pulse rate on a 16x2 LCD. I've built one before, with an LED display and a single servo output, but this one should handle two servos.
Except it doesn't. I won't even handle one. There's two major problems I've found which I'm looking for solutions to.