Sensor Projects with Raspberry Pi

Use Python to develop Rasperry Pi projects to solve common digital image processing and IoT problems. Using a free IoT server you’ll tackle fundamental topics and concepts behind theses two areas. This second edition includes new content on Artificial Intelligence and updated sensor guidance to help you better explore virtual animations, create a homemade spectrometer, and master object classification with Edge Impulse.

Start by creating a system to detect movement with a PIR motion sensor and a Raspberry Pi board. Use the MQ2 gas sensor and a Raspberry Pi board as a gas leak alarm system to detect dangerous explosive and fire hazards. Then train your system to send the captured data to the remote server ThingSpeak. You’ll also develop a weather station with your Raspberry Pi. Using the DHT11 (humidity and temperature sensor) and BMP (barometric pressure and temperature sensor) in conjunction with ThingSpeak and X, you can receive real time weather alerts from your own meterological system!

Spectral sensers used with the Raspberry Pi include the AS7262 (six colors), and AS7263 (near infrared) for the construction of a filter spectrometer, sensing colored solutions, and assessing plant foliage health. Finally, expand your skills into the popular machine learning world of digital image processing using OpenCV and a Pi. Make your own object classifiers and finally manipulate an object by means of an image in movement. This skillset has many applications, ranging from recognizing people or objects, to creating your own video surveillance system.

With the skills gained from Sensor Projects with Raspberry Pi, you’ll be well-equipped to explore other applications in mobile development and electrical engineering as well.

What You’ll Learn

• Work with ThingSpeak to receive X alerts from your systems.
• Cultivate skills in processing sensor inputs that are applicable to mobile and machine learning projects.
• Incorporate sensors into projects to make interactive devices.
• Experiment with virtual scenarios and objects.
• Create Python and Pygame games that contain virtual scenarios and animations.
• Detect colored solutions and assess the plant foliage health.

Who This Book Is For

Hobbyists and makers working with robotics and IoT. Electronic engineers and programmers who would like to expand their familiarity with basic sensor projects.

Table of Contents

Chapter 1: Theoretical Fundamentals

Chapter 2: Alarm System

Chapter 3: Gas Leak Alarm

Chapter 4: Weather Station

Chapter 5: Digital Image Processing with Python and OpenCV

Chapter 6: Animations with Python and Pygame

Chapter 7: Homemade Spectrometer

Chapter 8: Object Classification Using Edge Impulse on Raspberry Pi

About the Author

Guillermo Guillen is an Electronics and Communications Engineer, and Military Engineer. He has worked on CITIZEN and Government projects. Guillermois the winner of “Make with Ada 2018-19” and several other contests. In addition to this book, he has written over 40 articles about the research, design, development and testing of the electronic equipment used in various systems. He currently works as a micro entrepreneur. You can find more information at www.guillengap.com.