Okay, I have been having a heck of a time getting a GLCD working here and need some help. I should mention the board is working just fine when run off a computer, and I have already checked the default settings in the config have not been messed with.
I have one genuine and two knockoff screens in front of me, all verified working on other boards (the genuine on another smoothie, the knockoffs on arduino based boards). The shield is from Robotseed with an added onboard regulator.
Unfortunately, none of the screens work. The backlights all come on, sometimes I will get a rectangle of lit pixels, and the speaker will beep when I press the button, but that's the extent of the functionality.
Is it possible there could be something wrong with the shield? I verified the position of the jumper but am not sure if there's anything else on there I should be checking. Also verified the various cables I have do connect the pins correctly on all boards.
Here's an example: go to Imgur dot com and add /QqcLpRN.jpg
Any help would be appreciated!