3D Printer Ramps 1.4 2004 LCD Smart Controller Display Control

The intelligent controller includes an SD card reader, rotary encoders and a 20-character 4-line.
Easily connect it to your RAMPS 1.4 boards use “smart adapters”.

After connected the RAMPS 1.4, insert SD card and all operations, such as calibration, axis motion controllable by a rotary encoder.
Without pc, save your G code file on the SD card.