Things Bus

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We want to make a super-easy-to-integrate-with way to handle sensors and actuators around the space.


Alpha Quality: thingsbus python + zeromq system

For details of this system, see https://github.com/eastein/thingsbus - more documentation to be filled in here later.

Things We Want To Integrate

Status notices should be published so that consumers can subscribe to sections of the space that they are interested in for example:

  • Workshop
    • AC
    • Extraction
    • ColdMetals
      • Bandsaw
      • Bridgeport
      • BridgeportCNC
      • Lathe
    • HotMetals
      • Forge
      • Lincoln100
      • Lincoln125
      • ArgonTank
    • WoodShop
      • Dustcollector
      • Dustmeter
      • sawstop
      • bandsaw
    • CNC
      • Taz
      • AO-100
      • ShopBot
  • Electronics
    • Projector
  • Lounge
    • AC
    • Projector
    • Bar
  • Kitchen
    • BrewFridge
    • Fridge
    • Stove
  • General Area
    • Doors
      • Front
        • Front Doorbell
      • Rear
      • Lounge - Front and back
      • Starewell - Top and bottom
      • Bathrooms
    • Lights
    • A/C & Heat
  • Workshop
    • Forge
    • Dust Collector
    • LN2 Scale
  • Systems
    • Spacemon
    • Peoplemon
    • Chillmon
    • Schedmon
    • DHCP
    • Netlogon
    • Access control

Future Features

Issuing commands

Commands for items should be sent to a queue, the controller/interface for the time should be subscribed to the queue and process the commands, queues should be laid out in a similar way to topics. Messages should also be json and well formed and documented.


Examples

Dust collector status messages

Transmitted to: /topic/PS1/Workshop/WoodShop/DustCollector

On event:

{ "source": "DustCollection", "location": "workshop", "messageType": "status", "status": "Dust collector turned on", "transition": true }

Periodic status:

{ "source": "DustCollection", "location": "workshop", "messageType": "status", "status": "Dust collector active", "transition": false }

Off event:

{ "source": "DustCollection", "location": "workshop", "messageType": "status", "status": "Dust collector turned off", "transition": fase }

Dust collector commands

Transmitted to: /queue/PS1/Workshop/WoodShop/DustCollector

Turn system on:

{ "target": "DustCollection", "location": "workshop", "messageType": "command", "command": "on"}

Turn system off:

{ "target": "DustCollection", "location": "workshop", "messageType": "command", "command": "off"}


References

The thread that started this off: https://groups.google.com/forum/#!topic/pumping-station-one/ogqSHK08DAI

Other Links

https://wiki.muc.ccc.de/uberbus:start?redirect=1

https://wiki.muc.ccc.de/uberbus:ubd

https://github.com/muccc/ubd

https://wiki.muc.ccc.de/uberbus:protocols

http://stackoverflow.com/questions/1534655/creating-a-program-to-be-broadcasted-by-avahi

http://www.avahi.org/wiki/Examples/PythonPublishAlias