simple question, what displays do some of you use for th emidipal I assambled 2 of those with different newhaven displays, it seems like on my scope I can see some logic signals like clock or data in coming fromt he Atmel IC to the display , but it wont work.
I read something about it must be a 3V3 supply type, I got some with 5V some with 3V3, I tested both, but neither works, then Ic hecked the pinning and the Newhaven displays use mirrored Vcc and GND pins, so it wont fit to the PCB, can that be true or did I simply confuse something badly.
Anyway maybe I shorted out one display or something is indeed wrong on the PCB.
Thanks for your help, if someone got a working midipal please could you if possible send me an exact display type.
I am using those:
Pin1: VSS=GND Pin2: VDD=3V3
same pin asignment
I switched the pinning for testing, either i killed something, but the supply voltage seems correct, or i am confused, just need little tip into right direction.