I bought an LCD from Maker Shed got it up and running on my Arduino and I was one proud papa!
I then needed to rearrange my breadboard to fit more components and after re-wiring my lcd stopped working. It lights up but I can’t adjust the contrast to display the row of blocks.
You’re probably thinking “Deeg you knucklehead, you’ve wired it wrong” so I’ve included a shot of the board with the wiring (see next post). Is it possible that the lcd is fried? Is there some other test I can run?
The power supply is a 9v 500ma wall wart. I’m using the arduino to run other functions (i.e. controlling a fan via pwm) so I don’t think there’s anything wrong with it. I’ve used my multitester to verify that the pot is working as expected (and I’ve tried other pots).