i tried and backlight lits up but no solid boxes
Quotei tried and backlight lits up but no solid boxesThat's step 1.What happens when you turn the potentiometer in step 2?Did you try connecting pin 3 to GND?Don
So just to clarify, you have pins 1 an 2 connected to ground and +5V respectively, (what are you using to source the 5V, by the way?,) you have the backlight power through a resistor on pins 15 and 16.You have a 10K potentiometer also connected between ground and +5V with the wiper connected to pin 3, and you try varying it from one end to the other. The boxes should show up at one point or another, generally closer to the ground end.
when i placed the potentiometer and turned 1 whole round, the boxes didn't appear at all only the backlight ligts up
Can you post a close up picture of how you wired the LCD?All you need right now is GND on pin1 and pin3 and 5V on pin2 on your LCD. Don't connect pins 15, 16.If you see backlight instead of blocks, it means you're connecting the wires to pins 16, 15, 14 and not 1, 2, 3. Make sure you're connecting the wires to the correct pins.
All in favor that's its a dead LCD?
Don, just out of interest, shouldn't such an LCD have an extra pin to drive the display itself built into the PCB?
LCD Datasheet says LCD drive voltage is -0.3 - 13V.