Quote Originally Posted by Glenn View Post
Yes I do, actually a new one I never used before since the other one is used for my servotests
I measured the Vss and Vdd on the display to see that it get power, also that it get some power at Vo, but none of the other connections, but maybe I should..
Right up there with the heartbeat LED, I usually put a 'blink all pins at x frequency' subroutine in there to do nothing but pulse all the pins at a known rate. Hit 'em with the logic probe or the 'scope and those questions go out the window...
Solderless breadboards-These days, my older breadboards are usually the first suspect...