RepRap Ramps 1.4 Compatible 128x64 Graphic GLCD Display Kit - Full Graphic Smart
Full graphics Smart Controller, SD Card reader, potentiometer and 128 x 64 Includes LCD screen. You can easily connect it to your RAMPS 1.4 card using the included "smart adapter". Once you connect this panel to your RAMPS, you do not need your PC to control your 3D Printer. All actions such as calibration, axis movements can be done only by using the potentiometer on the Smart Controller. Print your 3D designs without a PC, just with a g-code file stored on the SD card.