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Raspberry Pi Zero Cookbook
book

Raspberry Pi Zero Cookbook

by Edward Snajder
March 2017
Beginner to intermediate
422 pages
8h 4m
English
Packt Publishing
Content preview from Raspberry Pi Zero Cookbook

Interfacing toggle switches and setting debouncing

If you tried the previous recipe, you probably noticed that the color cycling switched quickly while the button was pressed. This was because the input behavior would loop as fast as the Raspberry Pi Zero could process the input, which is pretty fast! A simple software method to allow for a more human-speed signal recognition is called debouncing.

Getting ready

You'll want the following equipment in addition to your Raspberry Pi Zero, a breadboard, and jumper wires:

  • Two 330-Ohm resistors
  • Two LEDs, any color
  • Three-way toggle switch (A\off\B)
  • Tactile pushbutton

How to do it...

  1. For this recipe, configure the circuit as follows:

  2. Next, create the toggle.py file, and put in the following code to test it out: ...
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Publisher Resources

ISBN: 9781786463852