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What is MQTT? MQTT stands for MQ Telemetry Transport. It is a publish/subscribe, extremely simple and lightweight messaging protocol, designed for constrained devices and low-bandwidth, high-latency or unreliable networks. The design principles are to minimize network bandwidth and device resource requirements whilst also attempting to ensure reliability and some degree of assurance of delivery. These principles also turn out to make the protocol ideal of the emerging “machine-to-machine” (M2M) or “Internet of Things” world of connected devices, and for mobile applications where bandwidth and battery power are at a premium.

Learn more at mqtt.org

Below is a list of pages that relate to this topic.  Find out more by clicking the page link.

Mosquitto MQTT


Get all the support you need to integrate MQTT into your next IoT project.

What is MQTT?

Node-Red


Support and Customization for all your Node-Red projects.

What is Node-Red?

Building an IoT Monitoring System From a Raspberry Pi (part 1)

In this article, I go over how I built a humidity alert system that is being used to monitor temperature and humidity for hay farming. The idea is that when you bail hay, it needs to be during the night, and when the humidity is over 60%. Hay farmers tend to lose sleep waiting to see when the humidity is just right to go out and bail their hay. I was asked if I could build a device that would monitor conditions out in the field where the hay is on the ground waiting to be bailed and then send an alert to the farmer from these remote locations once optimum humidity is reached.