I'm hooking up an LCD to my Teensy 3.2. All the connections are correct, except I had the contrast pin going to ground.
This results in the screen being filled with square blocks. If I tilt the screen I can see the text I entered is visible on the LCD so that confirms everything is working ok.
I tried to hook up a 1k potentiometer. Pin 1 to ground, pin 2 to contrast pin on the LCD and pin 3 to power. It seems that my potentiometers are dead, if I mess with the pins on the pot I get a brief display but nothing consistent.
I don't have any other pots to hand, so for the moment is there anything I can do to get a decent contrast to the display?
This is the LCD I have: https://www.amazon.co.uk/gp/product/B00ALNHTVY/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Any help would be much appreciated.
I got some new potentiometers today, works fine :)