MuMaBus

 

MuMaBus Release status: experimental [box doku]
Description	Bus to connect different devices in the lab and in the outside world
Author(s)	tiefpunkt

The MuMaBus is a framework to connect different devices in the lab to each other and with outside services. This is currently done using MQTT.

Bus details

• MQTT Broker: mqtt.munichmakerlab.de
  • Note: Old nodes in the bus still use mqtt.tiefpunkt.com. Both brokers are bridged, so messages sent to one broker will be received by devices connected to the other as well. But new devices should always use mqtt.munichmakerlab.de
• Port: 1883 (unencrypted), 8883 (SSL, using a CACert certificate)
• Anonymous read access to mumalab/#
• For write access, contact Matthias or Severin

Topics

Topic	Description	Possible values	Devices
mumalab/DMX/1/controller	MAC and IP of DMX controller, comma separated
mumalab/DMX/1/set	interface to set DMX channels	Accepts list of DMX id:state, comma separated. State is int between 0-255 (0 is off), or 1000 (toggle between on and off)
mumalab/DMX/1/state	list of current state of DMX ids with state, comma separeted	e.g.: "0:0,1:0,2:255,3:0,4:0,5:0,6:0,7:0,8:0,9:0,10:0,11:0"
mumalab/mccafe/1/buttonpress	Button presses on the fastfood remotes	e.g. "B2"	Fastfood Remotes
mumalab/mpd/command	Control the MPD via MQTT	play, pause, next, previous, toggle, volume up, volume down	SpaceMusic
mumalab/room/status	Status of the lab	0 for closed, 1 for open, ? for unknown	StartYourEngines
mumalab/room/door/status	Status of the door of the main room	0 for closed, 1 for open, ? for unknown
mumalab/otherroom/door	Status of the door of the other room	0 for closed, 1 for open, ? for unknown
mumalab/room/sensors/#	Sensors across the space	plain numeric values	SensorNode
mumalab/fridge/#	Lights and Sensors of the drinks fridge	tbd	Fridge
mumalab/room/lights/#	Light control system	tbd	LightsOut
mumalab/room/lights/hanging_lights/state	Hanging lights above the worktables	0, 1	LightsOut
mumalab/room/lights/whiteboard/state	Light tube around the whiteboard	0, 1	LightsOut
mumalab/room/lights/chandelier/state	Chandelier incl. RGB LED	0, 1	LightsOut
mumalab/room/lights/ceiling/command	RGB ceiling lights	off, red, green, blue, white
mumalab/room/display	VFD Display in the space	Text	Cash Register Display
mumalab/room/ledpanel/#	LED Panel from Jorgen		LEDPanel
mumalab/audio/x32/	Behringer x32 mixing desk (Mischpult)		Behringer x32
mumalab/room/rcsockets	RF power socket control	"a,11111,00101,0"

DMX Devices

Channel	Device	Details
1-12	DMX Switchpack	Not used yet
12-17	Laser (no one likes it)	13: Pattern 14: Laser 1 15: Laser 2 16: Laser 3 …
18-19	Strobe	18 Speed 19 Intensity
20-38	Ceiling LEDs	20 Intensity 21 Red 22 Green 23 Blue 24 White 25 Preset 26 Not in Use 27 Speed 28 Control 30 Intensity 31 Red 32 Green 33 Blue 34 White 35 Preset 36 Not in Use 37 Speed 38 Control

RF power sockets

Switched via MQTT connected basestation. Send the following to mumalab/room/rcsockets:

type,house_code,device_code,action

with the options

• type - Type of RF sockets used, according to https://github.com/sui77/rc-switch/wiki/HowTo_OperateLowCostOutlets (which is missing type D). Only implemented types are "a" and "d" right now.
• house_code and device_code - Whatever is set on the socket as address
• action - 1 for switching on, 0 for switching off

Currently placed sockets

Identifier	Description	Switched on/off with the space status
a,11111,00001	Nebenraum door status	no
a,11111,00010	BobbyCar and light tube above common room	yes
a,11111,00011	Wall of Monitors (only screens, no orange pis). Also switches LED strip behind the screens	yes
d,a,1	Alarm light	no
d,a,2	Electronics corner	yes

Devices & Projects using the MuMaBus

• StartYourEngines
• SensorNode
• LightsOut
• Cash Register Display
• Fastfood Remotes
• SpaceMusic