3D Printer 128x64 Smart LCD Display Controller for RAMPS 1.4 This smart LCD kit is a 3D printer 128×64 Smart LCD controller for ramps 1.4 and contains the following components: SD-Card reader Rotary encoder 128×64 LCD display You can easily connect it to your Ramps board using the "smart adapter". After connecting this panel to your Ramps you don't need your pc anymore, the Smart Controller supplies power for your SD card. Furthermore, all actions like calibration, axes movements can be done by just using the rotary encoder on the Smart Controller. Print your 3D designs without PC, just with a g-code design stored on the SD card. This panel connects to your RAMPS 1.4 All further operations, such as calibration, the axis movement can be done with the rotary encoder embedded. The SD card slot is integrated at the back so that the files to be printed can be read here. It is used to use since all you need to do is plug and play on the RAMPS.    Check out : 1.75mm Luminous White ABS Filament -1Kg Package Includes: Smart Adapter (Fully Assembled) 5″ Smart Controller with built-in SD Card slot  Set of 11″ Cables Set of Headers to connect to your RAMPS 1.4 Board Specifications: Display 128 columns x 64 lines Display Size 3 inches Cable Length 30 CM Supply Voltage (V) 5 Dimensions (mm) 5 x 93 x87