Description: The intelligent controller includes an SD card reader and a rotary encoder 20 characters x 4 lines LCD display. You can easily connect it to your RAMPS 1.4 board uses "smart adapter" included. After this panel to connect your RAMPS 1.4 does not require a computer SD card can be a smart controller power supply. All further operations such as calibration the shaft can be done only by movement of the rotary encoder intelligent controller. 3D design print without a computer just use the G code design stored on the SD card. Features: 1. Using a large-screen LCD 2004 4 lines of 20 characters; 2. Integrated SD card back after slicing the file into the SD card on the LCD to select the corresponding file can be printed; 3. Product comes encoder parameter adjustment can be achieved and choose to print documents; 4. Ramps plug and play on but the need to modify the firmware to support.