Just installed a RepRapDiscount Full Graphic Smart Controller on my ramps 1.4 board. My issue is that the screen is always on when the board is powered via usb (RPi always connected) Is this normal?
On my old Melzi board there was a jumper to toggle between vref and usb. Vref only powered the lcd when the mains was connected and on.
Edited 1 time(s). Last edit at 10/02/2017 01:07PM by totalitarian.