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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Faster PWM

This is an exotic procedure! The standard PWM frequency on the Arduino is around 490 Hz. While it can get most jobs done, it is not really that fast. However, we can change that.

Faster PWM is especially useful when controlling motors. At low PWM, the torque is greatly affected, and it can also create audible noise. The best way to test this is to implement the Controlling speed with PWM recipe from Chapter 5, Motor Control, and increase the PWM frequency.

Note

A note to remember: this might interfere with other functions, such as delay(). We have to be extra careful when this happens.

Getting ready

Following are the ingredients required to implement this recipe:

  • An Arduino board connected to a computer via USB

  • A DC motor

  • A resistor between 220 ohm and 4,700 ohm

  • A standard NPN transistor (BC547, 2N3904, N2222A, TIP120) or a logic level-compatible MOSFET (IRF510, IRF520)

  • A standard diode (1N4148, 1N4001, 1N4007)

How to do it…

After we implement the same circuit as in the Controlling speed...

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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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