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ESP8266 Internet of Things Cookbook

You're reading from ESP8266 Internet of Things Cookbook Over 50 recipes to help you master ESP8266 functionality

Product type Paperback

Published in Apr 2017

Publisher Packt

ISBN-13 9781787288102

Length 268 pages

Edition 1st Edition

Tools

ESP8266

Concepts

Robotics

Author (1):

Marco Schwartz

View More author details

Table of Contents (9) Chapters

Preface

1. Configuring the ESP8266 FREE CHAPTER

2. Your First ESP8266 Projects

3. More ESP8266 Functions

4. Using MicroPython on the ESP8266

5. Cloud Data Monitoring

6. Interacting with Web Services

7. Machine to Machine Interactions

Index

M2M alarm system

In the previous chapters, we looked at the different ways of achieving M2M communication between two ESP8266 boards. In this recipe, we will look at how to implement M2M communication in an IoT project. To do that, we will create a simple M2M alarm system with one ESP8266 board connected to a DHT11 sensor and the other connected to a buzzer. The alarm will be triggered when the temperature reading drops below 20 degrees Celsius.

Getting ready

You will need the following hardware components:

ESP8266 board
USB cable
DHT11 temperature/humidity sensor (https://www.sparkfun.com/products/10167)
10 kΩ resistor
Buzzer
Breadboard
Jumper wires

The DHT11 pin configuration is shown in the following figure:

First, 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 VCC 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 GPIO2 of the ESP8266 board...

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Authors (1)

Marco Schwartz

Marco Schwartz

Marco Schwartz is an electrical engineer, entrepreneur, and blogger. He has a master's degree in electrical engineering and computer science from Supélec, France, and a master's degree in micro engineering from the Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland. He has more than five years' experience working in the domain of electrical engineering. Marco's interests center around electronics, home automation, the Arduino and Raspberry Pi platforms, open source hardware projects, and 3D printing. He has several websites about the Arduino, including the Open Home Automation website, which is dedicated to building home automation systems using open source hardware. Marco has written another book on home automation and the Arduino, called Home Automation With Arduino: Automate Your Home Using Open-source Hardware. He has also written a book on how to build Internet of Things projects with the Arduino, called Internet of Things with the Arduino Yun, by Packt Publishing.

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