Finally got my LCD in, tired of wasting time on Repetier for milling. Probably me doing something wrong but I wanted a screen anyways because the computer I had in the garage was a makeshift desktop made out of a laptop motherboard from 2009 I got for free. Much rather just work on my laptop/real desktop and upload to the SD card.
When I plug it in, nothing happens. I am using the same LCD as the one Ryan sells, but on ebay. (Sorry man just had to save the 5 bucks) All electronics were bought from here so the firmware is already flashed. Do I have to change the line in Marlin? Cause the firmware thats flashed does say Big LCD screen so I would assume it is ready to go. I added the file to my arduino library. Am I missing something here?