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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Creating sound

Sound is a very powerful output that is usually taken for granted. We see things such as LEDs, we feel things such as motors, but we also hear. Arduino has a nice little library called Tone that aids in generating sounds at specific frequencies. For people passionate about music, we can actually play monophonic songs for the most geekish sound possible.

Getting ready

Following are the ingredients required to execute this recipe:

  • An Arduino board connected to a computer via USB.

  • A small 8-ohm speaker.

  • A 120-ohm resistor; larger values also work, but the sound will be less powerful. Don't use resistors under 100 ohms.

How to do it…

Follow these steps to connect a speaker to the Arduino:

  1. Connect one terminal of the speaker directly into the GND of the Arduino.

  2. Using a 120-ohm resistor in series, connect the other terminal to an available digital pin; in this example, pin 12.

Schematic

This is one possible implementation on the 13th digital pin. Other digital pins can also be used.

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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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