Note

Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

Why Join?

  • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Learn & Share: Exchange tips and tutorials to enhance your skills.

  • Exclusive Previews: Get early access to new product announcements and sneak peeks.

  • Special Discounts: Enjoy exclusive discounts on our newest products.

  • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.

👉 Ready to explore and create with us? Click [here] and join today!

Video 33: How to Incorporate a Keypad into a Raspberry Pi Project¶

This video demonstrates how to read keypad input using a Raspberry Pi, covering the circuit setup, Python code implementation, and addressing the “sticky button” issue.

  1. Keypad Scanning Method: Understanding the concept of keypad scanning with rows and columns.

  2. Circuit Setup: Configuring GPIO pins for rows and columns, including the use of internal pull-down resistors.

  3. Python Code Implementation: Step-by-step walkthrough of Python code to read keypad input by activating rows and reading columns.

  4. “Sticky Button” Problem: Identifying and solving the issue of repeated button presses.

Video