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

Reading data from a sensor using MicroPython

Reading sensor data is an essential function of the ESP8266. You can do that using MicroPython. To demonstrate it, we are going to read the temperature and humidity from the DHT11 sensor using MicroPython.

Getting ready

In this tutorial, you will need an ESP8266 board, a USB cable, and a few other components, which include:

Mount the ESP8266 board and the DHT11 sensor onto the breadboard. Connect a 10 kΩ pull up resistor to the DHT11 data pin and connect the pin and GND pin to the 3V pin and GND pin of the ESP8266 board, respectively. Finally, connect the data pin of the DHT11 to GPIO 5 of the ESP8266 board. Use jumper wires to do the connections.

The setup is shown in the following diagram:


Refer back to Chapter 2, Your First ESP8266 Projects to confirm the DHT11 pin configuration.

How to do it…

You can use MicroPython to read digital signals...