Mounts on the rear of the 1602 & 2004 compatible LCD module to provide an I2C interface.
Reduces the number of I/O pins required to drive the LCD to just two.
Compatible with both the 16x2 and 20x4 displays we supply.
Built-in LCD contrast adjust. Arduino compatible.
Tips for use with an Arduino can be found at https://www.makerguides.com/character-i2c-lcd-arduino-tutorial/
Use the address and configuration setting "LiquidCrystal_I2C lcd(0x27,16,2)" or on older libraries
"LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);"
NOTE: The I2C address bits A0, A1 and A2 can be changed, if required, by shorting the marked pads on the circuit board.