IoT & Hardware
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You're reading from  Arduino Development Cookbook

Product typeBook
Published inApr 2015
Publisher
ISBN-139781783982943
Edition1st Edition
Tools
Arduino
Concepts
Robotics
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Author (1)
Cornel M Amariei
Cornel M Amariei
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Cornel M Amariei

Cornel Amariei is a Romanian inventor and entrepreneur in the fields of Robotics and 3D printing. He has been working with the Arduino platform since its early days in 2007. His past experience involves large cargo gamma ray scanning robotics, ATM security systems, and blind assisting devices. In his spare time, he is a performing musician playing multiple instruments—predominately the guitar. He is also a swimmer, water polo player, and photographer. Over the years, he has built hundreds of Arduino projects, ranging from flying Quadcopters to levitating magnets and underwater robots. Currently, he splits his time between doing his undergraduate studies in electric engineering and computer science at Jacobs University in Bremen, Germany, and his start-ups and research and development job.
Read more about Cornel M Amariei

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Button multiplexing

Using a multiplexer, it is possible to make the Arduino read over a hundred buttons easily. A multiplexer/demultiplexer is an integrated circuit that selects one of several inputs and forwards them to the output. It requires a few control pins to determine which input to forward to the output.

Getting ready

Following are the ingredients required for this recipe:

  • An Arduino board connected to a computer via USB

  • A breadboard and jumper wires

  • Four buttons

  • A 4051 multiplexer or similar, which we can find at any electronics store and online at Digikey, Sparkfun, Adafruit, and so on

How to do it…

We implement a simple configuration using only four buttons. Here are the steps:

  1. Connect the Arduino GND to a long strip on the breadboard. Also connect the Arduino 5V to a long strip.

  2. Mount the four buttons and connect one of their terminals to the long GND strip.

  3. Connect the other terminal of each button to an individual input/output pin on the 4051—in this case, pins y0, y1, y2, and y3.

  4. Connect...

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Arduino Development Cookbook
Published in: Apr 2015Publisher: ISBN-13: 9781783982943
© 2015 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Cornel M Amariei

Cornel Amariei is a Romanian inventor and entrepreneur in the fields of Robotics and 3D printing. He has been working with the Arduino platform since its early days in 2007. His past experience involves large cargo gamma ray scanning robotics, ATM security systems, and blind assisting devices. In his spare time, he is a performing musician playing multiple instruments—predominately the guitar. He is also a swimmer, water polo player, and photographer. Over the years, he has built hundreds of Arduino projects, ranging from flying Quadcopters to levitating magnets and underwater robots. Currently, he splits his time between doing his undergraduate studies in electric engineering and computer science at Jacobs University in Bremen, Germany, and his start-ups and research and development job.
Read more about Cornel M Amariei

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