projects:mqtt [c-base coredump wiki]

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====== c-beam MQTT ======

MQTT is a machine-to-machine (M2M)/"Internet of Things" connectivity protocol. see: http://mqtt.org

We are running a mqtt server on c-beam.cbrp3.c-base.org on port 1883. It's only reachable from the internal network.

An up-to-date listing of artefacts and their topics can be found from https://github.com/c-base/c-flo/tree/master/participants

The content of the current participant folder (updated by running a __grunt createMarkup__ command in c-flo)

^ artifact ^ description ^ inports topic ^ outports topic^ 
|ampel-nerd |pedestrian traffic light in front of the door to nerdarea|**colors**: ampel/nerd| n/a |
|barstatus-bar |c-base bar status sign at the bar|**barstatus**: bar/status| n/a |
|barstatus-c-lab |c-base bar status sign in the c-lab|**barstatus**: bar/status| n/a |
|barstatus-nerd |c-base bar status sign in the nerd area|**barstatus**: bar/status| n/a |
|[[https://github.com/c-base/c-beam|c-beam]] |c-base on-board computer| n/a |**userboarding**: user/boarding \\ **usereta**: user/eta \\ **playsound**: c_out/play \\ **playrandomsound**: c_out/loop \\ **saytext**: c_out/Julia \\ **openurl1**: nerdctrl/open \\ **openurl2**: siri/open \\ **time**: info/time \\ **barstatus**: bar/status|
|c_leuse |c-base airlock|**playsound**: c_out/play \\ **playrandomsound**: c_out/loop \\ **saytext**: c_out/Julia| n/a |
|he1 |c-base siri data rescue probe|**openurl**: he1/open| n/a |
|[[https://github.com/c-base/ingress-table|ingress-table]] |Ingress Table| n/a |**cbase**: ingress/status/+|
|mechblast |c-base workshop blaster|**playsound**: c_out/play \\ **playrandomsound**: c_out/loop \\ **saytext**: c_out/Julia| n/a |
|nerdctrl |c-base nerd control interface|**openurl**: nerdctrl/open \\ **playsound**: c_out/play \\ **playrandomsound**: c_out/loop \\ **saytext**: c_out/Julia|**openurl**: nerdctrl/open|
|siri |c-base siri data rescue probe|**openurl**: siri/open \\ **playsound**: c_out/play \\ **playrandomsound**: c_out/loop \\ **saytext**: c_out/Julia|**openurl**: siri/open|

Currently there are the following topics:

^ topic                      ^ interval   ^ description ^
|info/time                     |  1 minute  | current date and time |
|c_out/loop                    | 10 minutes | starts a new sound loop on c_out |
|c_out/play                    |  n/a       | playload plays various sound samples |
|c_out/Julia                   |  n/a       | playload plays announcements on c_out via tts with voice Julia|
|nerdctrl/open                 |  n/a       | opens the payload URL in a browser in the nerdarea |
|client/echelon                |  n/a       | this is a retained topic, if it is available, the traffic stats script on echelon is running |
|system/echelon/traffic        |  1 minute  | average incoming and outgoing traffic on ipb and kdg lines from echelon in bytes/s since last message |
|system/powermon/load          | 15 seconds | current (estimated) power load in watts |
|system/powermon/load_low      | 15 seconds | lowest power load in watts |
|system/powermon/load_low_date | 15 seconds | date lowest power load in watts was seen last |
|system/powermon/load_high     | 15 seconds | highest power load in watts |
|system/powermon/load_hig_date | 15 seconds | date highest power load in watts was seen last |
|system/powermon/count         | 15 seconds | estimated power meter counter |
|system/powermon/last_update   | 15 seconds | ISO timestamp of the last update of the power data |
|system/powermon               | 15 seconds | all of the above power data |
|system/powermon/raw           | 15 seconds | raw data from the LS110 |
|ingress/status/+              |  n/a       | these are retained topics and show status of the ingres portals around the c-base |
|user/boarding                 |  n/a       | triggered when a member logs in, message contains the username in JSON format |
|ampel/nerd                    |  n/a       | Beispiel JSON-Daten für die Message: '{"red": 1, "green": 0}' |
|ampel/mainhall                |  n/a       | wie, ampel nerd, aber zusätzlich noch mit Gelb: {"red": 1, "green": 1, "yellow": 1} |
====== mqtt-sender ======

The topics from echelon are published with a small lua daemon, which can be easily extended.
Check it out from: https://github.com/c-base/mqtt-sender
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