LCD Display Stuck on Black Screen Need Help

[rubbyhaul]

Hi everyone,

Iam working on a project using an Arduino and an LCD display, but iam running into an issue where the screen remains completely black screen when powered on.

The backlight turns on, so I know it's receiving power, but there’s no text or graphics appearing on the display. I have double-checked my wiring, power supply, and contrast settings, but I can’t figure out what’s causing the problem.

I also tried running a simple test sketch, but the screen still stays black. Has anyone else faced this issue before? Any suggestions on how to fix it would be greatly appreciated. Thanks in advance!

 

[Les Jones]

You will need to give more information for anyone to be able to help you. The type of LCD display and a schematic of how you have connected it to the arduino.
Les.

 

[Nigel Goodwin]

If your contrast is set wrong you can get a completely black screen, or if it's not being initialised correctly - if you power an LCD up with nothing connected to it you get a black screen. As Les said, post your schematic, and preferably a picture as well.

 

[Ian Rogers]

When you use the "test" software you MUST change the Data bits and control bits to suit your application

If all lines are black Your contrast voltage is too low.. if its only odd lines that are black then the LCD init was unsuccessful.. ie 1 and 3 depending on the lines of the display..

You'll need to tell us which LCD library you're using.