I've been messing around with an LCD display for about 2 weeks now. Had things working on my development board, but then when I made a PCB, it didn't work. Back to the development board, worked again. Then when I switched to directly wiring to he processor on my robot, it stopped working. When I moved it back to the dev board, still didn't work. Finally this morning, I found it...

A word to the wise, there is a continuity tester on your meter - use it whenever you make a new cable.