RepRap Smart 12864 3D Printer LCD Display Control. This full graphic Smart Controller contains a SD-Card reader, a rotary encoder and a 128 x 64 dot matrix LCD display.
You can connect it to a Ramps board using the “smart adapter” included. After connecting you can perform operations like calibration, axes movements, extruder priming, bed leveling and much more. Print your 3D designs without PC, just with a g-code design stored on the SD card.