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 an analog temperature sensor


In Chapter 6, Working with Analog Inputs and Local Storage, we used a photoresistor included in a voltage divider and we connected it to an analog input pin. We can use a similar configuration and replace the photoresistor with a thermistor to measure ambient temperature. A thermistor changes its resistance value with temperature, and therefore, we can convert resistance changes into voltage value changes.

We can also work with an analog sensor breakout board that includes a thermistor in the necessary configuration to provide us with voltage levels to an analog pin that represent temperature values. In this case, we will work with an analog temperature sensor supported in the upm library to measure ambient temperature.

We will use the the analog pin labeled A0 to connect the voltage output of an analog accelerometer breakout board. After we finish the necessary wirings, we will write Python code to measure and display the ambient temperature in both degrees...