This Smart Controller contains a SD-Card reader, a rotary encoder and a 20 Character x 4 Line LCD display. You can easy connect it to your Ramps board using the "smart adapter" included.

After connecting this panel to your Ramps you don't need your pc any more, the Smart Controller supplies power for your SD card. Further more 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.

Hookup

There are two identical connectors on the display board, which take ribbon cables to connect to RAMPS. If you switch them you'll just get beeping to let you know it's wrong.

The connector nearest the wider end of the L-shaped "smart adaptor" is #2; the other is #1. Looking at the bottom face of the display card, with the ribbon cables going away from you (so the encoder, buzzer, and reset switch are to your right), the left socket is #1, and the right socket is #2.