We’re now stocking a new product from Liudr, a Phi-Panel Serial LCD Backpack Kit with either a 20×4 LCD or 16×2 LCD.
The Phi-panel 20×4 backpack lets you add a 20-character 4-line LCD to your Arduino (or PIC, Stamp, just about any microcontroller) using only a two-wire standard serial interface. An on-board microcontroller takes care of all your interactive user interface needs, including controlling the LCD for displaying menus, lists, input numbers, texts, sensing key presses, returning user choices, and a lot more. The backpack is also addressable so up to 254 displays can be connected to the same serial port.