This is a RoHS-compliant I2C Serial LCD Daughter board that can be connected to a standard 16×2 or 20×4 Character Display Module that supports 4-bit mode and nearly all commercially available 16×2 and 20×4 line character modules support it too.

This board has a PCF8574 I2C chip that converts I2C serial data to parallel data for the LCD display. There are many examples on the internet for using this board with Arduino. Do a search for “Arduino LCD PCF8574“. The I2C address is 0x3F by default, but this can be changed via 3 solder jumpers provided on the board. This allows up to 3 LCD displays to be controlled via a single I2C bus (giving each one its own address).

I2C is a serial protocol for a two-wire interface to connect low-speed devices like microcontrollers, EEPROMs, A/D and D/O converters, I/O interfaces, and other similar peripherals in embedded systems. … The initial I2C specifications defined a maximum clock frequency of 100 kHz.

PRODUCT APPLICATIONS :

This module that can be used to circumvent this problem is the I2C Module for LCD Display with PCF8574 (datasheet ): With this module, you can control an LCD display, either 16×2 or 20×4, using only two pins Arduino: the analog input pin 4 (SDA) and the analog input pin 5 (SCL) forming the I2C interface.

QUICK OVERVIEW :

• This Is Another Great Iic/I2C/Twi/Spi Serial Interface
• As The Pin Resources Of Arduino Controller Is Limited, Your Project May Be Not Able To Use a Normal Lcd Shield After being Connected With A Certain Quantity Of Sensors Or Sd Card
• I2C Address: 0X20~0X27 (The Original Address Is 0X27, You Can Change It Yourself).
• Supply Voltage: 5V
• The Backlight And Contrast Is Adjusted By Potentiometer
• Come With 2 IIIc Interface, Which Can Be Connected By Dupont Line Or Iic Dedicated Cable

IN THE BOX :

I2C MODULE by Auslese Robotics comes included with -

1 x IIC/I2C Serial Interface Adapter Module

I2C MODULE SPECIFICATIONS

• Power Supply: 5V  
• 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.
• IC Chip: PCF8574
• PCB Size (mm) : 42 mm × 20 mm

# Product Images are shown only for illustrative purposes and may differ from actual product.