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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.

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