Getting Started with Sensors: Measure the World with Electronics, Arduino, and Raspberry Pi

by Kimmo Karvinen, Tero Karvinen

Overview

To build electronic projects that can sense the physical world, you need to build circuits based around sensors: electronic components that react to physical phenomena by sending an electrical signal. Even with only basic electronic components, you can build useful and educational sensor projects.

But if you incorporate Arduino or Raspberry Pi into your project, you can build much more sophisticated projects that can react in interesting ways and even connect to the Internet. This book starts by teaching you the basic electronic circuits to read and react to a sensor. It then goes on to show how to use Arduino to develop sensor systems, and wraps up by teaching you how to build sensor projects with the Linux-powered Raspberry Pi.

Product Details

ISBN-13:	9781449367084
Publisher:	Make Community, LLC
Publication date:	09/05/2014
Pages:	138
Product dimensions:	5.50(w) x 8.30(h) x 0.30(d)

About the Author

Kimmo Karvinen works as a CTO in hardware manufacturer that specializes in integrated AV and security systems. Before that he worked as a marketing communications project leader and as a creative director and partner in advertisement agency. Kimmo's education includes a Masters of Art.

Tero Karvinen teaches Linux and embedded systems in Haaga-Helia University of Applied Sciences, where his work has also included curriculum development and research in wireless networking. He previously worked as a CEO of a small advertisement agency. Tero's education includes a Masters of Science in Economics.

Table of Contents

Preface vii

1 Sensors 1

Project 1 Photoresistor to Measure Light 3

Parts 4

Build It 5

Discussion: Photoresistors 6

Interactive Sensor Control 7

Going Forward 7

2 Basic Sensors 9

Project 2 A Simple Switch 9

Parts 9

Build It 10

Troubleshooting 11

An LED Needs a Resistor 12

Project 3 Buzzer Volume Control 12

Parts 13

Build It 13

Troubleshooting. 14

Project 4 Hall Effect 14

Parts 16

Build it 15

Troubleshooting 16

Project 5 Firefly 17

Integrated Circuits 17

555 Timer IC 18

Light Up an LED When It's Bright 19

Light to Darkness 21

Transistors 22

Fading an LED 24

555 Fading Blink 25

Capacitors 28

Firefly 29

3 Sensors and Arduino 33

Project 6 Momentary Push-Button and Pull-Up Resistors 34

Parts 34

Build It 35

Run the Code 35

Pull-Up Resistors and Arduino 37

Project 7 Infrared Proximity to Detect Objects 40

Parts 41

Build It 42

Project 8 Rotation (Pot) 43

Parts 45

Build It 46

Run the Code 46

Project 9 Photoresistor to Measure Light 47

Parts 47

Build It 48

Run the Code 49

Project 10 FlexiForce to Measure Pressure 49

Parts 50

Build It 50

Run the Code 51

Project 11 Measuring Temperature (LM35) 52

Parts 53

Build It 53

Run the Code 55

Project 12 Ultrasonic Distance Measuring (HC-SR04) 56

Parts 57

Build It 57

Run the Code 58

Conclusion 61

4 Sensors and the Raspberry Pi 63

Project 13 Momentary Push Button 64

Parts 64

Build It 64

Run the Button Code 66

Troubleshooting 67

Hello, Python World 68

Project 14 Blink an LED with Python 69

Parts 69

Build the LED Blink Project 69

Run the Code 70

Project 15 Adjustable Infrared Switch 73

Parts 73

Build the IR Switch Project 73

Run the Code 74

Voltage Divider 76

Analog Resistance Sensors 77

Project 16 Potentiometer to Measure Rotation 77

Parts 78

Build It 78

Install SpiDev 78

Allow SPI Without root 79

Run the Code 80

Project 17 Photoresistor 82

Parts 82

Build It 83

Run the Code 83

Playing with Resistance Numbers 83

Project 18 FlexiForce 85

Parts 85

Build It 85

Run the Code 86

Project 19 Temperature Measurements (LM35) 86

Parts 86

Build It 86

Run the Code 87

Project 20 Ultrasonic Distance 89

Parts 89

Build It 90

Run the Code 90

Real Time or Fast? 92

A Troubleshooting Tactics 95

B Arduino IDE Setup 97

C Setting Up Raspberry Pi 101

D Eill of Materials 117

Index 123