Book Image

Internet of Things with ESP8266

By : Marco Schwartz
Book Image

Internet of Things with ESP8266

By: Marco Schwartz

Overview of this book

The Internet of Things (IoT) is the network of objects such as physical things embedded with electronics, software, sensors, and connectivity, enabling data exchange. ESP8266 is a low cost WiFi microcontroller chip that has the ability to empower IoT and helps the exchange of information among various connected objects. ESP8266 consists of networkable microcontroller modules, and with this low cost chip, IoT is booming. This book will help deepen your knowledge of the ESP8266 WiFi chip platform and get you building exciting projects. Kick-starting with an introduction to the ESP8266 chip, we will demonstrate how to build a simple LED using the ESP8266. You will then learn how to read, send, and monitor data from the cloud. Next, you’ll see how to control your devices remotely from anywhere in the world. Furthermore, you’ll get to know how to use the ESP8266 to interact with web services such as Twitter and Facebook. In order to make several ESP8266s interact and exchange data without the need for human intervention, you will be introduced to the concept of machine-to-machine communication. The latter part of the book focuses more on projects, including a door lock controlled from the cloud, building a physical Bitcoin ticker, and doing wireless gardening. You’ll learn how to build a cloud-based ESP8266 home automation system and a cloud-controlled ESP8266 robot. Finally, you’ll discover how to build your own cloud platform to control ESP8266 devices. With this book, you will be able to create and program Internet of Things projects using the ESP8266 WiFi chip.
Table of Contents (20 chapters)
Internet of Things with ESP8266
About the Author
About the Reviewer

Configuring the hardware

Let's now assemble the project:

  1. First, place the ESP8266 module on the breadboard, along with the OLED screen.

  2. Then, connect the power to the OLED screen: connect VIN to the 3.3V pin of the ESP8266, and GND to GND.

  3. Next, we are going to connect the I2C pins the screen to the ESP8266. Connect the DATA pin of the screen to pin 14 of the ESP8266, and the CLK pin of the screen to pin 12 of the ESP8266.


    Note that some OLED screens can be configured to either use SPI or I2C. Make sure that your screen is configured to use I2C. This might require some soldering, depending on the brand of your display.

  4. Finally, connect the RST pin of the OLED screen to pin 2 of the ESP8266 board. I found out that this is only necessary if you are having issues with the screen, but to be safe, connect this pin.

    This is the final result: