Tuto Arduino : Lire un Clavier Matriciel 4x3 et Afficher sur LCD via I2C (Simulation Proteus)

In this comprehensive tutorial (Part 1), learn how to interface a 4x3 matrix keypad with an Arduino UNO board and display the pressed keys on a 16x2 LCD screen. We use the I2C protocol with the PCF8574 module to save pins on your Arduino, an essential technique for complex projects. You will also discover how to properly configure your components in Proteus to ensure successful simulations every time. What you will learn: The operating principle of matrix keypads (rows and columns). I2C addressing (0x20 vs. 0x27) for the LCD display. Installing and using the Keypad and LiquidCrystal_I2C libraries. Arduino programming to interpret the keys and manage the display. 📌 Video Chapters [00:00:00] Introduction: Project overview and tutorial objectives. [00:00:12] The Matrix Keyboard on Proteus: Understanding the available models and how they work. [00:01:22] Keyboard Structure: Difference between 4x3 and 4x4 keyboards. [00:02:16] I2C & PCF8574 Communication: Why use an I/O expander for the LCD. [00:03:30] I2C Address Configuration: How to choose between address 0x20 and 0x27. [00:04:51] Library Installation: Adding LiquidCrystal_I2C and Keypad to the Arduino IDE. [00:06:31] Arduino Code Analysis: Configuration of rows, columns, and the character table. [00:09:12] Wiring & Pin Mapping: Correspondence between the code and the hardware connections. [00:10:28] LCD Initialization: Essential functions for the display. [00:11:24] Main Loop: Reading keystrokes and real-time display. [00:12:00] Compilation and Simulation: Exporting the .hex file and final testing in Proteus. [00:13:10] Conclusion and Future Directions: Overview of Part 2 (Motor Control). 🛠️ Hardware & Software Used Software: Proteus 8, Arduino IDE. Components: Arduino UNO, 4x3 Keypad, 16x2 LCD, PCF8574 (I2C). 🔗 Links and Resources 📥 File download link (Members only): ✅ Subscribe so you don't miss Part 2! #Arduino #Electronics #Tutorial #Proteus #I2C #Microcontroller #DIY #Programming #SimulationLab