Book Image

Internet of Things with Python

By : Gaston C. Hillar
Book Image

Internet of Things with Python

By: Gaston C. Hillar

Overview of this book

Internet of Things (IoT) is revolutionizing the way devices/things interact with each other. And when you have IoT with Python on your side, you'll be able to build interactive objects and design them. This book lets you stay at the forefront of cutting-edge research on IoT. We'll open up the possibilities using tools that enable you to interact with the world, such as Intel Galileo Gen 2, sensors, and other hardware. You will learn how to read, write, and convert digital values to generate analog output by programming Pulse Width Modulation (PWM) in Python. You will get familiar with the complex communication system included in the board, so you can interact with any shield, actuator, or sensor. Later on, you will not only see how to work with data received from the sensors, but also perform actions by sending them to a specific shield. You'll be able to connect your IoT device to the entire world, by integrating WiFi, Bluetooth, and Internet settings. With everything ready, you will see how to work in real time on your IoT device using the MQTT protocol in python. By the end of the book, you will be able to develop IoT prototypes with Python, libraries, and tools.
Table of Contents (19 chapters)
Internet of Things with Python
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Index

Wiring a servo motor


So far, we have been using sensors to retrieve data from the real world and we displayed information in LCD and OLED displays. However, IoT devices are not limited to sensing and displaying data, they can also move things. We can connect different components, shields, or breakout boards to our Intel Galileo Gen 2 board and write Python code to move things connected to the board.

Standard servo motors are extremely useful to precisely control a shaft and position it at various angles, usually between 0 and 180 degrees. In Chapter 4, Working with a RESTful API and Pulse Width Modulation, we worked with pulse width modulation, known as PWM, to control the brightness of an LED and a RGB LED. We can also use PWM to control a standard analog servo motor and position its shaft at a specific angle.

Tip

Standard servo motors are DC motors that includes gears and feedback control loop circuitry that provides precision positioning. They are ideal for pinion steering, robot arms and...