Book Image

ESP8266 Internet of Things Cookbook

By : Marco Schwartz
Book Image

ESP8266 Internet of Things Cookbook

By: Marco Schwartz

Overview of this book

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.

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Table of Contents (15 chapters)
ESP8266 Internet of Things Cookbook
ESP8266 Internet of Things Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Customer Feedback
Customer Feedback
Preface
Preface
Free Chapter
1
Configuring the ESP8266
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
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
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
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
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
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
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
Index

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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