Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Android Things Quick Start Guide

You're reading from   Android Things Quick Start Guide Build your own smart devices using the Android Things platform

Arrow left icon
Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789341799
Length 192 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
Raul Portales Raul Portales
Author Profile Icon Raul Portales
Raul Portales
Arrow right icon
View More author details
Toc

Servos

Besides relays, servo motors are one of the most interesting and versatile components that are frequently used on IoT projects. A servo motor can turn itself to a determined angle with high precision. They can be used to steer a robot car, orient a camera, as actuators on a robotic arm, and so on. They are -obviously- controlled using PWM.

Robotic arms and camera brackets rely on servos

Servos use PWM in a particular way. They do not read the duty cycle in the way you would expect; they do check the length of the pulse. That length is not related to a percentage of the period, but an absolute number. A servo expects this value to be sent about every 20 ms, so we will work at 50 Hz. Repeating the signal is important to make the servo return to that position if it was moved -i.e. by brute force- but without an external interaction, the servo will simply stay in the last...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image