LiquidCrystal_I2C

Download a re-implementation of the standard Arduino LCD library, for LCDs with HD44780 and compatible controllers, and interfaced via  Chinese PCF8574 I2C serial extender boards as sold on EBay.

Download LiquidCrystal_I2C

Generic CN Type 2 I2C Extender Pin Map
I2C Extender Pin Map
for Generic CN Type 2