10013256-001:
Hi Friends.. when i connect my JHD 162A lcd with arduino2560 i just want to test contrast but it not working i connect pot with pin 3 and also use led to cnfirm thats the pot is working. pot work good but contrast not changed smiley-sad-blueany suggestion??
My first suggestion would be for you to rewrite your post using coherent sentences.
Explain how you have connected your potentiometer and explain just how you used an LED to confirm that the pot is working.
Don