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Comes with a 16x2 RGB backlight LCD negative display
Plug and play with any Arduino 'classic' UNO duemilanove diecimilla etc as well as Arduino Mega R3.
Uses only the I2C pins Analog 4 & 5 on classic Arduinos Digital 20 and 21 on Arduino Mega R3
This board/chip uses I2C 7bit address 0x20
Mounting hole size is 2.5mm
Dimensions: 2.1 x 3.2