Finally got around to getting my display working. I had thought I had a broken display but turns out that although Arduino analog pins can be configured to be digital pins, that won’t work with standard parallel mode LCD displays. Plugging all 6 pins to digital works fine.
Power usage stats (LCD + Arduino pro mini 3.3V):-
- LCD backlight, no text – 3.69 mA
- LCD backlight, 16×2 text – 3.70 mA
- No LCD backlight, 16×2 text – 0.71 mA
So no prizes for guessing what mode I’ll have it in most of the time! I’ll have it off (no displayed text, no backlight)