Opto 22 posted How to Get Started with MQTT Opto 22 Woodland, WA:

How to Get Started with MQTT

Summary
In this tutorial, you'll learn how to get started using MQTT with Node-RED. The IoT is all about interconnecting devices. MQTT is a lightweight publish-subscribe based protocol that relays data through a central broker. This video covers:
How the MQTT model works
What is an MQTT broker
The advantages and disadvantages of MQTT
How to use MQTT to turn on a digital output
MQTT Node-RED…

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