Book Image

Building Smart Homes with Raspberry Pi Zero

By : Marco Schwartz
Book Image

Building Smart Homes with Raspberry Pi Zero

By: Marco Schwartz

Overview of this book

The release of the Raspberry Pi Zero has completely amazed the tech community. With the price, form factor, and being high on utility—the Raspberry Pi Zero is the perfect companion to support home automation projects and makes IoT even more accessible. With this book, you will be able to create and program home automation projects using the Raspberry Pi Zero board. The book will teach you how to build a thermostat that will automatically regulate the temperature in your home. Another important topic in home automation is controlling electrical appliances, and you will learn how to control LED Lights, lamps, and other electrical applications. Moving on, we will build a smart energy meter that can measure the power of the appliance, and you’ll learn how to switch it on and off. You’ll also see how to build simple security system, composed of alarms, a security camera, and motion detectors. At the end, you will integrate everything what you learned so far into a more complex project to automate the key aspects of your home. By the end, you will have deepened your knowledge of the Raspberry Pi Zero, and will know how to build autonomous home automation projects.
Table of Contents (17 chapters)
Building Smart Homes with Raspberry Pi Zero
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Automating your home


Now that we have our central server running and you can use it to control & monitor your home from a single interface, we can actually define some behaviors inside the server in order to create some automation within your smart home.

As an example, we are going to automatically switch on the lamp when motion is detected by the sensor. You can imagine the scenario in which the appliance control module is connected to a lamp in your hallway and that you want it to automatically switch on whenever a movement is detected by the motion sensor.

For that, here is the code you need to add into the server code:

setInterval(function() {

  // Check sensor
  request("http://" + motionSensorPi + "/digital/" + motionSensorPin,
    function (error, response, body) {

      // If motion was detected
      if (body.return_value == true) {

        request("http://" + lampPi + "/digital/" + lampPin + '/1');

      }
      else if {

        request("http://" + lampPi + "/digital/" ...