We are running an MQTT broker inside our network. This can be used for projects, for example for sensor data.

The MQTT broker is running on roonadan.lan (

Under the topic sandbox/# you can play around and send messages.

The following topics are ACL restricted. Your MQTT client needs to have a valid login and the according permission to read/write on the topics. Ask metalgamer on how to get an account.

Topic Description
availability/# This topic is used for every client to publish availability messages (online/offline). This is the topic also for the last will messages.
space/status This topic contains the current space state. It is a JSON encoded message.
space/member_count On this topic the current member count of the club will be published. This message is JSON encoded.
sensors/people_now_present On this topic the current people present will be published (integer)
sensors/people_now_present/names The names of the people present (if available)
sensors/temperature/# On this topic the current temperature sensors reading will be published. The readings are in °C an are a float. The subtopics are the location for the sensors (Example: sensors/temperature/chill/shelf for the sensors on the shelf in the Chill room)
  • chaosstuff/infrastructure/network/mqtt.txt
  • Last modified: 2019/12/27 20:03
  • by metalgamer