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.
Table of Contents (15 chapters)
ESP8266 Internet of Things Cookbook
About the Author
About the Reviewer
Customer Feedback

Automated light control

In this recipe, we will look at automated light control using M2M. We will work on a project that will turn a light source on or off, depending on the light intensity of the surrounding environment. Two ESP8266 boards will be used to accomplish this. One of them will have a light dependent resistor, and the other will have a relay connected to it.

Getting ready

You will need the following hardware components:

Connect the analog input of the ESP8266 board to an LDR connected to a 10 kΩ resistor in a voltage divider circuit, as shown in the following image. This setup is going to act as the input for the system:

As for the output of the system, connect a relay to GPIO2 of the other ESP8266 board. The connection will be via an NPN transistor such as the 2N222, and a diode...