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1. #ARDUINO I2C EXAMPLE TWO WAY DATA COMMUNICATION HOW TO#
2. #ARDUINO I2C EXAMPLE TWO WAY DATA COMMUNICATION INSTALL#
3. #ARDUINO I2C EXAMPLE TWO WAY DATA COMMUNICATION SERIAL#
4. #ARDUINO I2C EXAMPLE TWO WAY DATA COMMUNICATION CODE#

The protocol is known as the "two-wire" protocol because 2 lines are used for communication. The I 2C protocol was created by Phillips in the early 1980s and was standardized and adopted widespread The I 2C bus is a bus which enables high-speed two-way communication between devices while usingĪ minimal number of I/O pins to facilitate communication.Īn I 2C bus is controlled by a master device (usually a microcontroller) and contains one ore more slaveĭevices that receive information from the master device.

#ARDUINO I2C EXAMPLE TWO WAY DATA COMMUNICATION HOW TO#

In this project, we will show how to connect an I 2C device to an arduino microcontroller. I will reply as soon as possible.How to Connect an I 2C Device to an Arduino Microcontroller If you have any queries, feel free to comment below. If R/W is equal to one it is read mode.Ĭlick on the link for more projects and tutorial on Arduino. If R/W is equal to zero, then it is write mode. The selection of READ / WRITE is done by a pin R/W.

If it is one, then it is a data register. There a pin called Register select (RS), if that pin is made to zero, then it is command register.

Here a question arises how to differentiate between commands and data written to the register. In write mode commands to control the display is written to the register like display clear, shift right, the cursor on, etc., In WRITE mode the register is also written with data which is needed to be displayed on the display. It has two modes, one is READ mode and another is WRITE mode. The LCD display has an inbuilt register, to store the data and commands given to the LCD display.

#ARDUINO I2C EXAMPLE TWO WAY DATA COMMUNICATION CODE#

#ARDUINO I2C EXAMPLE TWO WAY DATA COMMUNICATION INSTALL#

Download and Install the Library attached.

#ARDUINO I2C EXAMPLE TWO WAY DATA COMMUNICATION SERIAL#

Write all characters received with the serial port to the LCD.ĭownload I2C LCD Arduino Code and Library Procedure Wait a bit for the entire message to arrive If characters arrived over the serial port. Initialize the serial port at a speed of 9600 baud Set the LCD address to 0x27 for a 16 chars and 2 line display Lcd.setCursor(0,1) //Defining positon to write from second row,first column.

ĭelay(1000) //Delay used to give a dynamic effect Lcd.print(" Tech Maker ") //You can write 16 Characters per line. Lcd.setCursor(0,0) //Defining positon to write from first row,first column. lcd.backlight() // To Power OFF the back light Lcd.backlight() //To Power ON the back light The blue color component you have seen in the above picture is a potentiometer which is used to adjust the brightness of the display. If you properly have seen the picture above, you will see a black adapter. That black adapter uses the PCF8574T IC chip which converts I2C serial data to parallel data for the LCD display. Jumper Wires Pin Configuration of I2C LCD Display I2C protocol is also known as 2 line protocol. By seeing the above example you may know the advantage of I2C protocol. If you use I2C LCD display, you need only just 4 connection. If you use normal LCD display, you need a total number of connections are 12. One of the best things about using I2C is we can reduce the connections (wiring). This is usually used to communicate between one master and multiple slaves. I2C (I-square-C i.e IIC) means inter-integrated communication protocol.

Before starting this article we will see what is i2c. In this tutorial, you will see how to connect i2c LCD display (Liquid Crystal Display) to Arduino using the i2c module.