MQTT

MQTT is a standard messaging protocol used for the Internet of Things (IoT) because it requires minimal resources and can be executed by small microcontrollers found in connected devices.

IoT devices have a real need for this type of lightweight protocol because it guarantees fast and reliable communication with minimal hardware requirements, keeping power consumption and manufacturing costs low.

IoT devices like smart temperature sensors regularly transmit information over the internet, but before you can deduce any meaningful information from that measurement, you need to store it in an adequate database. Smart sensor measurements are not complex, but they are highly dependent on the time constant — when the measurement was taken — and as a result, time-series databases, like InfluxDB, offer an efficient option to store and manipulate that kind of data.

MQTT - Publish / Subscribe

Workshops

Mosquitto

In this Lab, we take a look at a logistics use case. Each of our delivery trucks is fitted with sensors monitoring:

• Headlights

• Axle vibration

• Tyre pressure

• Load

• Engine temp

• GPS co-ordinates

The streamed data will help optimize routes and enable predictive maintenance.

Mosquitto

HiveMQ

Real-time data monitoring, from various devices and sensors such as pumps, motors, valves, and temperature sensors, with SCADA (Supervisory Control and Data Acquisition) systems is critical to modern industrial processes.

Various communication protocols, including Modbus and DNP3, enable Predictive maintenance and early fault detection, reducing the need for manual inspections and minimizing maintenance costs.

In this lab we're going to generate some robot sensor data that will be streamed to

a broker that operates a 'Sparkplug' Architecture.

Decoupling of data producers and consumers: Producers publish data, and multiple consumers subscribe to it.

Report by Exception (RBE): Data updates are sent only when values change, saving bandwidth and computational resources.

One-to-many communication: Data is transmitted once and received by multiple recipients.

Flexibility: Devices and applications can be added or removed without disrupting the entire system.

Centralized data governance: HiveMQ ensures permission handling and policy enforcement.

Shopfloor-to-cloud connectivity: Data distribution from edge to cloud.

HiveMQ