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Home > IoT & Hardware > Robotics > ESP8266 Internet of Things Cookbook
ESP8266 Internet of Things Cookbook
ESP8266 Internet of Things Cookbook

ESP8266 Internet of Things Cookbook: Over 50 recipes to help you master ESP8266 functionality

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eBook Apr 2017 268 pages 1st Edition
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Table of content icon View table of contents Preview book icon Preview Book

ESP8266 Internet of Things Cookbook

Chapter 2. Your First ESP8266 Projects

In this chapter, we will cover:

  • Functionalities of the ESP8266
  • Reading digital signals
  • Reading analog signals
  • Controlling an LED
  • Dimming an LED
  • Controlling a servo motor
  • Measuring data from a digital sensor
  • Controlling an OLED screen
  • Troubleshooting usual issues with ESP8266 basics

Introduction

In this second chapter of the book, we will learn how to use the General Purpose Input/Output (GPIO) pins to read input signals and produce output signals. With that knowledge,we will create simple projects to control outputs and read sensor inputs. This will give way to the development of more complex projects in later chapters.

Functionalities of the ESP8266

The first thing we will tackle is the functionality of the ESP8266. We will look at the features and functions of the ESP8266, and learn about all the available GPIO pins and how we can use them to read and write digital signals.

Features

The ESP8266 chip provides a self-contained, standalone Wi-Fi networking solution that allows you to host applications and to provide a Wi-Fi network that you can use to transfer data and instructions in your projects.

In normal use, the ESP8266 boots up directly from an external flash memory. It also has a cache that improves the performance of the system and reduces the amount of memory needed during operation.

The ESP8266 can also be used as a Wi-Fi adapter. In this case, the chip provides wireless Internet access to a microcontroller-based project through either the CPU AHB bridge or UART interface.

The on-board processing and storage capabilities of the ESP8266 enable easy integration with sensors and other devices via the...

Reading digital signals

One of the uses of the ESP8266's GPIO pins is to read digital signals. This allows you to control your project using input devices and also to monitor sensor data. In this recipe, we will look at how to read digital signals using GPIO pins.

Getting ready

Connect your ESP8266 board to your computer via a USB cable and set up your Arduino IDE (refer back to Chapter 1, Configuring the ESP8266). Once that is done, you can proceed to make the other connections.

In this recipe, we will need a few extra components. They include:

  • Breadboard
  • Jumper wires

Mount the ESP8266 board onto the breadboard and then connect a jumper wire from pin 5 to the GND pin. The connection should be as shown in the following figure:

Getting ready

How to do it…

We will configure pin 5 as an input, then read it using the digitalRead() function and display the state of the input signal on the serial monitor. This will be repeated every 1 second:

// LED pin
int inputPin = 5;
int val = 0;

void setup() {
  Serial...

Reading analog signals

The ESP8266 has one analog pin that we can use to read analog signals. In this recipe, we will be looking at how to write a sketch that reads analog signals. This will enable us to read input from analog sensors.

Getting ready

Connect your ESP8266 board to your computer via a USB cable and set up your Arduino IDE (refer back to Chapter 1, Configuring the ESP8266). Once that is done, you can proceed to make the other connections.

In this recipe, we will need a breadboard and jumper wires in addition to the ESP8266 board. Mount the ESP8266 board onto the breadboard and then connect a jumper wire from the analog ADC pin to the GND pin. The connection should be as shown in the following diagram:

Getting ready

How to do it…

We will use the analogRead() function to read the analog signal on the ADC pin and display the analog signal value on the serial monitor. This will be repeated every 1 second:

// LED pin
int val = 0;

void setup() {
  Serial.begin(9600);
}

void loop() {
  
  /...

Controlling an LED

This recipe is going to look at how to control an LED using an ESP8266 board. This will basically involve changing the state of an LED either ON or OFF, using the ESP8266 board's GPIO pins. The exercise will enable you to understand how to use the digital output function on the ESP8266.

Getting ready

Connect your ESP8266 board to your computer via a USB cable and set up your Arduino IDE (refer back to Chapter 1, Configuring the ESP8266). Once that is done, you can proceed to make the other connections.

In this recipe, we will need the following components:

Start by mounting the LED onto the breadboard. Connect one end of the 220 Ω resistor to the positive leg of the LED (the positive leg of an LED is usually the taller one of the two legs). Connect the other end of the resistor to another rail of the breadboard and...

Dimming an LED

In this section, we are going to look at how to dim an LED using the analog output function. This will involve controlling the brightness of an LED that is attached to one of the GPIO pins of the ESP8266.

Getting ready

You will need an ESP8266 board and a USB cable to do this tutorial. There will also be some additional components required for this project. They include:

Start by mounting the LED onto the breadboard. Connect one end of the 220 Ω resistor to the positive leg of the LED (the positive leg of an LED is usually the taller one of the two legs). Connect the other end of the resistor to another rail of the breadboard and connect one end of the jumper wire to that rail and the other end of the jumper wire to pin 4 of the ESP8266 board. Take another jumper wire and connect one of its ends to the negative leg of the LED and connect the...

Introduction

In this second chapter of the book, we will learn how to use the General Purpose Input/Output (GPIO) pins to read input signals and produce output signals. With that knowledge,we will create simple projects to control outputs and read sensor inputs. This will give way to the development of more complex projects in later chapters.

Functionalities of the ESP8266

The first thing we will tackle is the functionality of the ESP8266. We will look at the features and functions of the ESP8266, and learn about all the available GPIO pins and how we can use them to read and write digital signals.

Features

The ESP8266 chip provides a self-contained, standalone Wi-Fi networking solution that allows you to host applications and to provide a Wi-Fi network that you can use to transfer data and instructions in your projects.

In normal use, the ESP8266 boots up directly from an external flash memory. It also has a cache that improves the performance of the system and reduces the amount of memory needed during operation.

The ESP8266 can also be used as a Wi-Fi adapter. In this case, the chip provides wireless Internet access to a microcontroller-based project through either the CPU AHB bridge or UART interface.

The on-board processing and storage capabilities of the ESP8266 enable easy integration with sensors and other devices via the...

Reading digital signals

One of the uses of the ESP8266's GPIO pins is to read digital signals. This allows you to control your project using input devices and also to monitor sensor data. In this recipe, we will look at how to read digital signals using GPIO pins.

Getting ready

Connect your ESP8266 board to your computer via a USB cable and set up your Arduino IDE (refer back to Chapter 1, Configuring the ESP8266). Once that is done, you can proceed to make the other connections.

In this recipe, we will need a few extra components. They include:

  • Breadboard

  • Jumper wires

Mount the ESP8266 board onto the breadboard and then connect a jumper wire from pin 5 to the GND pin. The connection should be as shown in the following figure:

How to do it…

We will configure pin 5 as an input, then read it using the digitalRead() function and display the state of the input signal on the serial monitor. This will be repeated every 1 second:

// LED pin
int inputPin = 5;
int val = 0;

void setup() {
  Serial.begin(9600...

Reading analog signals

The ESP8266 has one analog pin that we can use to read analog signals. In this recipe, we will be looking at how to write a sketch that reads analog signals. This will enable us to read input from analog sensors.

Getting ready

Connect your ESP8266 board to your computer via a USB cable and set up your Arduino IDE (refer back to Chapter 1, Configuring the ESP8266). Once that is done, you can proceed to make the other connections.

In this recipe, we will need a breadboard and jumper wires in addition to the ESP8266 board. Mount the ESP8266 board onto the breadboard and then connect a jumper wire from the analog ADC pin to the GND pin. The connection should be as shown in the following diagram:

How to do it…

We will use the analogRead() function to read the analog signal on the ADC pin and display the analog signal value on the serial monitor. This will be repeated every 1 second:

// LED pin
int val = 0;

void setup() {
  Serial.begin(9600);
}

void loop() {
  
  // read pin...
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Key benefits

  • Leverage the ESP8266's on-board processing and storage capability
  • Get hand- on experience of working on the ESP8266 Arduino Core and its various libraries
  • A practical and enticing recipe-based book that will teach you how to make your environment smart using the ESP8266

Description

The ESP8266 Wi-Fi Module is a self contained System on Chip (SOC) with an integrated TCP/IP protocol stack and can give any microcontroller access to your Wi-Fi network. It is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. This book contains practical recipes that will help you master all ESP8266 functionalities. You will start by configuring and customizing the chip in line with your requirements. Then you will focus on core topics such as on-board processing, sensors, GPIOs, programming, networking, integration with external components, and so on. We will also teach you how to leverage Arduino using the ESP8266 and you'll learn about its libraries, file system, OTA updates, and so on. The book also provide recipes on web servers, testing, connecting with the cloud, and troubleshooting techniques. Programming aspects include MicroPython and how to leverage it to get started with the ESP8266. Towards the end, we will use these concepts and create an interesting project (IOT). By the end of the book, readers will be proficient enough to use the ESP8266 board efficiently.

Who is this book for?

This book is targeted at IOT enthusiasts who are well versed with electronics concepts and have a very basic familiarity with the ESP8266. Some experience with programming will be an advantage.

What you will learn

  • Measure data from a digital temperature and humidity sensor using the ESP8266
  • Explore advanced ESP8266 functionalities
  • Control devices from anywhere in the world using MicroPython
  • Troubleshoot issues with cloud data monitoring
  • Tweet data from the Arduino board
  • Build a cloud-connected power-switch with the ESP8266
  • Create an ESP8266 robot controlled from the cloud

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Apr 27, 2017
Length: 268 pages
Edition : 1st
Language : English
ISBN-13 : 9781787283558
Category :
IoT & Hardware
Concepts :
Robotics
Tools :
ESP8266

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Product Details

Publication date : Apr 27, 2017
Length: 268 pages
Edition : 1st
Language : English
ISBN-13 : 9781787283558
Category :
IoT & Hardware
Concepts :
Robotics
Tools :
ESP8266

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Table of Contents

8 Chapters
1. Configuring the ESP8266 Chevron down icon Chevron up icon
1. Configuring the ESP8266
Introduction
Setting up the Arduino development environment for the ESP8266
Choosing an ESP8266 board
Required additional components
Uploading your first sketch to the ESP8266
Connecting the ESP8266 to your local Wi-Fi network
Connecting the ESP8266 to a cloud server
Troubleshooting basic ESP8266 issues
2. Your First ESP8266 Projects Chevron down icon Chevron up icon
2. Your First ESP8266 Projects
Introduction
Functionalities of the ESP8266
Reading digital signals
Reading analog signals
Controlling an LED
Dimming an LED
Controlling a servo motor
Measuring data from a digital sensor
Controlling an OLED screen
Troubleshooting basic ESP8266 issues
3. More ESP8266 Functions Chevron down icon Chevron up icon
3. More ESP8266 Functions
Introduction
Discovering the advanced functions of the ESP8266
Using libraries on the ESP8266
Discovering the filesystem of the ESP8266
Storing data in the ESP8266 filesystem
Discovering the over the air update of the ESP8266 (OTA)
Programming your ESP8266 OTA
Troubleshooting basic ESP8266 issues
4. Using MicroPython on the ESP8266 Chevron down icon Chevron up icon
4. Using MicroPython on the ESP8266
Introduction
Introduction to MicroPython on the ESP8266
Discovering the MicroPython language
Getting started with MicroPython on the ESP8266
Controlling pins using MicroPython
Reading data from a sensor using MicroPython
Sending data to the cloud using MicroPython
Troubleshooting common MicroPython issues
5. Cloud Data Monitoring Chevron down icon Chevron up icon
5. Cloud Data Monitoring
Introduction
Internet of Things platforms for the ESP8266
Connecting sensors to your ESP8266 board
Posting the sensor data online
Retrieving your online data
Securing your online data
Monitoring sensor data from a cloud dashboard
Creating automated alerts based on the measured data
Monitoring several ESP8266 modules at once
Troubleshooting common issues with web services
6. Interacting with Web Services Chevron down icon Chevron up icon
6. Interacting with Web Services
Introduction
Discovering the Temboo platform
Tweeting data from the ESP8266 board
Posting updates on Facebook
Storing data on Google Drive
Automation with IFTTT
Sending push notifications
Sending e-mail notifications
Sending text message notifications
Troubleshooting common issues with web services
7. Machine to Machine Interactions Chevron down icon Chevron up icon
7. Machine to Machine Interactions
Introduction
Types of IoT interactions
Basic local machine to machine interactions
Cloud machine to machine interaction
Automated M2M with IFTTT
M2M alarm system
Automated light control
Automated gardening controller
Troubleshooting common issues with web services
Index Chevron down icon Chevron up icon
Index

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.2
(5 Ratings)
5 star 20%
4 star 40%
3 star 0%
2 star 20%
1 star 20%
Carlos Mateos Oct 20, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Seleccione entre varios con similar tema. Desde la selección, seguimiento hasta la entrega todo fue muy bien. Llego en buen estado. El contenido muy bueno para nosotros los aprendices.
Amazon Verified review Amazon
Brendan Ryan May 08, 2018
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
Good intro to ESP8266 and all things IOT
Amazon Verified review Amazon
P. Brown Nov 04, 2018
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
Quite a good book, felt there was something missing but apart from that I still recommend it to anyone starting off with esp8266 devices.
Amazon Verified review Amazon
Derek S. Jun 28, 2017
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
I would have bought the Kindle version because this sounds like a good book but did not. The simple reason is that a downloadable version has no "hardware" costs and so should be considerably cheaper. This is way overpriced for a downloadable version of anything. The author should accept that a lot of downloads at low price is better than none at a high price.
Amazon Verified review Amazon
Ike Mitchell May 02, 2020
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Is only applicable to a specific board. Can’t easily use with generic cheap but good node mcu versions. Hard to return once you figure that out
Amazon Verified review Amazon

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About the author

Profile icon Marco Schwartz
Marco Schwartz
Marco Schwartz is an electrical engineer, entrepreneur, and blogger. He has a master's degree in electrical engineering and computer science from Supélec, France, and a master's degree in micro engineering from the Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland. He has more than five years' experience working in the domain of electrical engineering. Marco's interests center around electronics, home automation, the Arduino and Raspberry Pi platforms, open source hardware projects, and 3D printing. He has several websites about the Arduino, including the Open Home Automation website, which is dedicated to building home automation systems using open source hardware. Marco has written another book on home automation and the Arduino, called Home Automation With Arduino: Automate Your Home Using Open-source Hardware. He has also written a book on how to build Internet of Things projects with the Arduino, called Internet of Things with the Arduino Yun, by Packt Publishing.
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