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

Troubleshooting common issues with web services

In this recipe, we will discuss some of the problems you may run into and how to troubleshoot and solve them.

The board is not connecting to the Wi-Fi network

This usually happens if the Wi-Fi SSID and password provided in the code do not match those of the Wi-Fi network the ESP8266 is supposed to connect to. You can solve this by providing the correct credentials in your code.

The board is not connecting to Adafruit IO

This can happen due to the use of the wrong Adafruit IO credentials, such as your key and username. Therefore, cross-check to make sure youhave provided the correct credentials.

The board receives more than one reading or different readings from what was sent

When using the MQTT-dashboard broker ( you may sometimes receive more than one reading, or a reading that is completely different from what has been published by your other ESP8266 board. This happens when you do not use a unique topic to publish your...