Interfacing I2C LCD with PIC16F877A Microcontrollers
Interfacing I2C LCD with PIC16F877A Microcontrollers
In this article, we will learn how to Interfacing I2C LCD with PIC16F877A Microcontrollers.
In the last post, we learned how to make Gas Sensor Interfacing with PIC16F877A.
Components Required:
- Microcontroller (PIC16F877)
- LCD display
- I2C module
- Gas sensor (MQ-5)
- Resistor variable (10k)
- Push button
- Capacitor (0.1uF, 22p)
- Connecting wires
How it works:
Interfacing an I2C LCD with a PIC16F877A involves establishing communication between the PIC microcontroller and the LCD display using the I2C (Inter-Integrated Circuit) protocol.
Circuit Diagram:
I2C Protocol:
- Serial Communication: I2C is a serial communication protocol that allows multiple devices to communicate with each other using only two wires – Serial Data (SDA) and Serial Clock (SCL).
- Master-Slave Configuration: In an I2C communication setup, the PIC16F877A typically acts as the master device, controlling the communication, while the LCD display serves as the slave device.
- Addressing: Each slave device on the I2C bus has a unique address. The PIC microcontroller sends the address of the LCD display it wants to communicate with along with data or commands.
Programming code:
Usages:
- Display Information
- User Interface
- Monitoring and Control
- Diagnostic and Debugging
- Information Presentation
