Filosofía política: una breve introducción

This book is about developing projects using the sensor-modules with Arduino Uno, Raspberry Pi and ESP32 microcontroller development systems. More than 40 different sensors types are used in various projects in the book. The book explains in simple terms and with tested and fully working example projects, how to use the sensors in your project. The projects provided in the book include the following: * Changing LED brightness * RGB LEDs * Creating rainbow colours * Magic wand * Silent door alarm * Dark sensor with relay * Secret key * Magic light cup * Decoding commercial IR handsets * Controlling TV channels with IT sensors * Target shooting detector * Shock time duration measurement * Ultrasonic reverse parking * Toggle lights by clapping hands * Playing melody * Measuring magnetic field strength * Joystick musical instrument * Line tracking * Displaying temperature * Temperature ON/OFF control * Mobile phone-based Wi-Fi projects * Mobile phone-based Bluetooth projects * Sending data to the Cloud The projects have been organized with increasing levels of difficulty. Readers are encouraged to tackle the projects in the order given. A specially prepared sensor kit is available from Elektor. With the help of this hardware, it should be easy and fun to build the projects in this book. Contents Preface Chapter 1 • Arduino Uno hardware interface and project development 1.1 Overview 1.2 Arduino Uno board 1.3 Arduino Uno program development 1.4 Project – Flashing two colour LEDs 1.5 Summary Chapter 2 • Raspberry Pi hardware interface and project development 2.1 Overview 2.2 The Raspberry Pi 3 board 2.3 Raspberry Pi 3 GPIO pin definitions 2.4 Setting up the Wi-Fi and remote access 2.5 Shutting down or rebooting in GUI mod 2.6 Remote Access of the desktop 2.7 Creating and running a Python program 2.8 The GPIO library 2.8.1 Pin numbering 2.8.2 Channel (I/O port pin) configuration 2.9 Raspberry Pi project development cycle 2.10 Project – Flashing two colour LEDs 2.11 Summary Chapter 3 • ESP32 hardware interface and project development 3.1 Overview 3.2 ESP32 DevKitC hardware 3.3 Arduino IDE for the ESP32 DevKitC 3.3.1 Installing the Arduino IDE for the ESP32 DevKitC 3.4 Project – Flashing two colour LEDs 3.5 Summary Chapter 4 • Arduino – Raspberry Pi – ESP32 projects 4.1 Overview 4.2 Light Projects 4.2.1 Project 1 – Changing the LED brightness 4.2.2 Project 2 – Using an RGB LED – Rainbow colours 4.2.3 Project 3 – Magic wand 4.2.4 Project 4 – Silent door alarm 4.2.5 Project 5 – Dark sensor with timed relay – Arduino Uno project 4.2.6 Project 6 – Dark Sensor with timed relay – Raspberry Pi project 4.2.7 Project 7 – Dark sensor with timed relay – ESP32 DevKitC project 4.2.8 Project 8 – Turn ON lights when it is dark and the door is opened – Arduino Uno project 4.2.9 Project 9 – Secret Key using the photo interrupter (light barrier) module 4.2.10 Project 10 – Using the magic light cup module 4.3 Summary Chapter 5 • Infrared Receiver-Transmitter projects 5.1 Overview 5.2 Project 1 – Receiving and decoding the codes of commercial IR handsets 5.3 Project 2 – Controlling 2 - Colour LEDs with a commercial IR handset 5.4 Project 3 – Infrared Transmitter - Scanning the TV channels using a commercial IR handset 5.5 Project 4 – Two communicating Arduino Uno's using IR 5.6 Summary Chapter 6 • Vibration and shock projects 6.1 Overview 6.2 Project 1 – Target shooting detector 6.3 Project 2 – Vibration based toggle switch 6.4 Project 3 – No shock time duration measurement 6.5 Summary Chapter 7 • Ultrasonic sensor projects 7.1 Overview 7.2 Project 1 – Ultrasonic reverse parking with buzzer 7.3 Summary Chapter 8 • Sound sensor projects 8.1 Overview 8.2 Project 1 – Toggle lights by clapping hands 8.3 Summary Chapter 9 • Passive piezo buzzer sensor projects 9.1 Overview 9.2 Project 1 – Playing melody 9.3 Summary Chapter 10 • Magnetic sensor projects 10.2 Project 1 – Measuring magnetic field strength 10.3 Project 2 – Magnetic door alarm 10.4 Project 3 – Magnetic musical instrument 10.5 Summary Chapter 11 • Flame sensor projects 11.1 Overview 11.2 Project 1 – Flame sensor with buzzer output 11.3 Summary Chapter 12 • Joystick module projects 12.1 Overview 12.2 Project 1 – Using the joystick 12.3 Project 2 – Joystick based musical instrument 12.4 Summary Chapter 13 • Obstacle sensor projects 13.1 Overview 13.2 Project 1 – Aid with car parking 13.3 Project 2 – Metal touch sensor 13.4 Summary Chapter 14 • Tracking sensor module projects 14.1 Overview 14.2 Project 1 – Line tracking 14.3 Project 2 – Secret code lock 14.4 Summary Chapter 15 • Rotary encoder module projects 15.1 Overview 15.2 Project 1 – Rotary encoder evaluation 15.3 Project 2 – Rotary encoder direction and position 15.4 Summary Chapter 16 • Heartbeat sensor module projects 16.1 Overview 16.2 Project 1 – Displaying heartbeat 16.3 Summary Chapter 17 • Temperature, humidity, and pressure sensor projects 17.3 Project 2 – Temperature sensor with buzzer 17.4 Project 3 – Displaying the temperature on LCD – Arduino Uno 17.5 Project 4 – Saving temperature as CSV file on PC with timestamp – Arduino Uno 17.6 Project 5 – Displaying the temperature on LCD – ESP32 DevKitC 17.7 Project 6 – Displaying the temperature on LCD – Raspberry Pi 17.8 Project 7 – Saving temperature as CSV file on PC with timestamp – Raspberry Pi 17.9 Project 8 – ON/OFF temperature control – Arduino Uno 17.10 Project 9 – ON/OFF temperature control – ESP32 DevKitC 17.11 Project 10 – ON/OFF temperature control – Raspberry Pi 17.12 Summary Chapter 18 • Wi-Fi and Bluetooth based projects using sensors – ESP32 DevKitC 18.1 Overview 18.2 Project 1 – Displaying temperature and humidity on a mobile phone using Wi-Fi 18.3 Project 2 – Remote control from mobile phone using Wi-Fi 18.4 Project 3 – Sending temperature and humidity to mobile phone using Bluetooth classic Chapter 19 • Wi-Fi and Bluetooth based projects using sensors – Raspberry Pi 19.1 Overview 19.2 Project 1 – Displaying temperature and humidity on a mobile phone using Wi-Fi 19.3 Project 2 – Sending the temperature and humidity data to the Cloud using Wi-Fi 19.4 Project 3 – Bluetooth based remote control from mobile phone Chapter 20 • Wi-Fi and Bluetooth based projects using sensors – Arduino Uno 20.1 Overview 20.2 Project 1 – Controlling a relay from mobile phone using Wi-Fi 20.3 Project 2 – Displaying temperature and humidity on a mobile phone using Wi-Fi Appendix A - Sensor kit contents Appendix B – Projects and sensor modules used Appendix C – Sensor modules and projects using them Index

This book is about developing projects using the sensor-modules with Arduino Uno, Raspberry Pi and ESP32 microcontroller development systems. More than 40 different sensors types are used in various projects in the book. The book explains in simple terms and with tested and fully working example projects, how to use the sensors in your project. The projects provided in the book include the following: Changing LED brightness RGB LEDs Creating rainbow colours Magic wand Silent door alarm Dark sensor with relay Secret key Magic light cup Decoding commercial IR handsets Controlling TV channels with IT sensors Target shooting detector Shock time duration measurement Ultrasonic reverse parking Toggle lights by clapping hands Playing melody Measuring magnetic field strength Joystick musical instrument Line tracking Displaying temperature Temperature ON/OFF control Mobile phone-based Wi-Fi projects Mobile phone-based Bluetooth projects Sending data to the CloudThe projects have been organized with increasing levels of difficulty. Readers are encouraged to tackle the projects in the order given. A specially prepared sensor kit is available from Elektor. With the help of this hardware, it should be easy and fun to build the projects in this book.