These exercises aim to provide a use case scenario in which most MQTT feature can be practically applied.

We have to organize and run an Exhibition called NERD-ART. Very expensive paintings from famous artist will be shown. A lot of Visitors were expected.

• The Visitor have to be informed about the Artists, Pictures and further background Information - depending on the Interests of the Visitor.
• The Pictures must be protected from thieves but also from high temperature and humidity fluctuations.

The idea is, to use MQTT to improve security, climatic conditions and user experience in an exhibition. An MQTT broker as the central communications hub will be provided.

We defined a couple of possible use cases and related exercises. Each use case is described in detail in the sub folder.

Use case 1: Provide personalized Information of art pieces and picture depending of visitors individual information

Exercise 1: Configure and connect your hand held device

Exercise 2: Connect the information service and start periodically publishing news

see details at subfolder for use case 1 Art Piece information

Use case 2: Automated control, to ensure optimal temperature and humidity in exhibition rooms.

Exercise 1: smart sensors and air conditioning unit

see details at subfolder for use case 2 Exhibition Rooms climate control

Use case 3: Stop the thief

Exercise 1: theft prevention for art pieces

see details at subfolder for use case 3 Stop the thief

##Software & Tool Requirements:

Software

• Java 11
• HiveMQ MQTT Client Library
• HiveMQ4

MQTT Client Tools

• MQTT FX or similar tool
• mqtt-cli

Documentation

• https://hivemq.github.io/hivemq-mqtt-client/
• https://hivemq.github.io/mqtt-cli/
• https://www.hivemq.com/docs/latest/hivemq/install-hivemq.html