This is the LCD1602 keypad shield v2.0 PCB. This mainboard adopt new high-quality 2 lines16 characters LCD, not only has the contrast adjustment knob, the backlight selector switch, 4 direction keys, 1 select keys and a reset button, and four sensor analog interfaces , RB URF v1.1 ultrasonic sensor interface, bluetooth module interface, APC220 wireless digital communication interface, easy-to-use for independent expansion. Tested in Arduino Diecimila Duemilanove, UNO, MEGA1280, MEGA2560 board. Features: Input Voltage: 5v Model: HD4478X 1602 LCD Backlight: Blue with White letters and adjustable light. Library: 4 Bit Arduino LCD Library
This Smart Controller contains a SD-Card reader, an 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.