I2C/IIC Backpack Interface for 1602/2004 LCD


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SKU: WTP160905 Categories: , ,


Solder this interface module onto the back of your 16×2 or 20×4 LCD module with the standard HD44780 parallel interface to enable I2C communications with your display.  What used to take six I/O pins, a contrast pot, and a backlight resistor now only requires Power (+5V), Ground, SDA and SCL.

Use with this library: https://github.com/marcoschwartz/LiquidCrystal_I2C
(Use the Arduino Library Manager to install it.)

There are three solder jumpers available to set the I2C address to one of 8 options.  If the IC part number is PCF8574AT, the base address is 0x3F.  For PCF8574T, the base address is 0x27.