MQTT
We are running an MQTT broker inside our network. This can be used for projects, for example for sensor data.
Host
We run 2 MQTT brokers, one on saturn and on roonadan.lan (192.168.1.189). Both are bridged together, so all messages will be forwarded to each other.
Sandbox
Under the topic sandbox/# you can play around and send messages.
Topics used
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 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 readings 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) |
| sensors/power_consumption/# | On this topic the power consumption sensor readings will be published. The readings are in W (Watt) and are a float. The subtopics are the location for the sensors. |
| sensors/energy_consumption/# | On this topic the energy consumption sensor readings will be published. The readings are in kWh (Kilowatthour) and are a float. The subtopics are the location for the sensors. |
| sensors/co2_emission/# | On this topic the co2 emission sensor readings will be published. The readings are in kg and are a float. The subtopics are the location for the sensors. |
| sensors/humidity/# | On this topic the humidity sensor readings will be published. The readings are in % and are a float. The subtopics are the location for the sensors. |
| sensors/barometer/# | On this topic the barometer sensor readings will be published. The readings are in hPa (Hectopascal) and are a float. The subtopics are the location for the sensors. |
| sensors/beverage_supply/+ | On this topic the stock value of beverages will be published. The readings are the current amount and are a float. The subtopic is the name of the beverage (Example: sensors/beverage_supply/flora_power) |