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ESP8266 Home Automation Projects

You're reading from   ESP8266 Home Automation Projects Leverage the power of this tiny WiFi chip to build exciting smart home projects

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781787282629
Length 196 pages
Edition 1st Edition
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Authors (2):
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Constantin Tambrea Constantin Tambrea
Author Profile Icon Constantin Tambrea
Constantin Tambrea
Catalin Batrinu Catalin Batrinu
Author Profile Icon Catalin Batrinu
Catalin Batrinu
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Toc

Message Queue Telemetry Transport


Usually, end devices have a limited memory and CPU power, running on batteries, so connecting them with servers requires a light protocol. Enter MQTT, which was invented in 1999 by Andy Stanford-Clark from IBM and Arlen Nipper from Arcom, a SCADA protocol design initially for battery operated devices to supervise oil pipelines. Later in 2010, IBM released it as a royalty-free protocol. In 2014, OASIS announced that the MQTT v.3.1.1 had become an OASIS standard and a lot of MQTT clients were developed for all programming languages.

The characteristics of MQTT are listed as follows:

  • Data agnostic: MQTT can transport all kind of data, from sensor data to images or over the air updates
  • Lightweight and bandwidth efficient: Smallest frame is only 2 bytes long
  • Provide QoS: Three Quality of Service (QoS) levels
  • Runs on top of the TCP/IP stack
  • Simple to develop: Clients exist for all operating systems and programming languages
  • Central broker: Can connect different devices...
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