I2C Serial To Parallel Converter Module

This I2C Serial To Parallel Converter Module has a inbuilt PCF8574 I2C chip that converts I2C serial data to parallel data for the LCD display.

These modules are currently supplied with a default I2C address of either 0x27 or 0x3F. To determine which version you have check the black I2C adaptor board on the underside of the module. If there a 3 sets of pads labelled A0, A1, & A2 then the default address will be 0x3F. If there are no pads the default address will be 0x27.

The module has a contrast adjustment pot on the underside of the display. This may require adjusting for the screen to display text correctly.

Specifications

• 5V power supply.
• Serial I2C control of LCD display using PCF8574.
• Backlight can be enabled or disabled via a jumper on the board.
• Contrast control via a potentiometer.
• Can have 8 modules on a single I2C bus (change address via solder jumpers)address, allowing.