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

Retrieving your online data

The ESP8266 can be used to retrieve data from online servers so long as it is connected to the Internet. To demonstrate how to do that, we will use our ESP8266 module to retrieve the most recent sensor data that was posted to, in our previous recipe. This will give you an idea of how to go about retrieving data from online sources.

Getting ready

For this recipe, you will only need your ESP8266 board and a USB cable. You can also leave your setup as it was in the second recipe in this chapter, although we won't need to read sensor input this time round.

How to do it…

Reading the most recent data from is just as simple as posting it. All you've got to do is send an http request using the following URL:

  1. Replace my-thing-name with the name of your thing and you are good to go. Therefore, in our case, the URL we will use is

  2. In addition to getting...