DFR0464 Gravity: I2C 16 x 2 Arduino LCD DFRobot DFR0464 Gravity: I2C 16 x 2 Arduino LCD is a development LCD with RGB backlight LED that provides better viewing options than black/white backlight display. This Arduino-powered LCD offers 16 x 2 character lines with a Super-Twisted-Nematic (STN) mode of operation. The display memory map of the I2C 16 x 2 Arduino LCD consists of character generator RAM and display data RAM.