I bought 2 16,2 lcd screens recently and only got to use 1 of them in the last few days. I have wired the lcd screen according to Adafruit’s wiring, and I have a 10k pot to set the contrast, but it doesn’t change at all. I then tried a 1k resistor, no change, then a 2k resistor, still no change. Then I just used a wire from the centre pin of the pot to ground, but no change there either.
It was just the same with the other lcd screen when I tried it.
Any other things I can do to get the contrast working.