Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol

Requirements:

Hardware:

• One Arduino to act as the Master.
• One Arduino to act as the Slave.
• An LCD display - 16x2.
• Jumper wires to connect the I2C lines.

Software:

• Arduino IDE:

Libraries:

• Wire.h
• LiquidCrystal_I2C.h

Explanation:

The project involves two Arduinos communicating over the I2C protocol. The Master Arduino sends a textual message to the Slave Arduino. The Slave Arduino receives this message and displays it on a 16x2 LCD. This demonstrates the use of I2C for communication between Arduinos and LCD devices.

Master Arduino:

• Initiates the communication by sending data over the I2C bus.
• Sends a predefined message to the Slave Arduino periodically.

Slave Arduino:

• Listens for incoming data from the Master Arduino.
• Receives the message and displays it on the LCD screen.

16x2 LCD:

• A character LCD that can display 16 characters per line and 2 lines.
• Controlled via I2C, which reduces the number of pins needed for connections.