How to control a DMX fog machine?

[creal]

Hello,

I use Usine to control interactive sound design and music, as well as video and lights at the same time. All works like a charm but I have a problem concerning the fog machine. It only accepts one DMX channel, that corresponds to the power of fog flow (0 = no fog blown out, 127 = max power). I succeeded to perfectly control the fog machine from Freestyle DMX but not with Usine. I put this very simple patch:

It works a little bit because the fog machine blow one second and stops, but not at its full power (even if I send a 255 value, ie "1" with from the fader). Maybe there is specific config to control fog machines? I didn't find any fog machine preset in the fixtures presets of Usine.

In the fixture config, I tried to set V type (I guess VALUES), as well as D type (I guess DIMMER), but I also saw there is another type of data for setting fixtures (the S) in this help page: https://www.brainmodular.com/manuals/hh ... ture-panel I couldn't tell you what S is standing for. Maybe there is other data types?

I also wonder what is the difference between the string placed above the 0-255 line (G in the next example) and the string the one that is placed after the comma (toto), for example "G // D,0,255,toto"?

Thanks in advance,

creal.

[senso]

hello,
what is the "status" DMX parameter ? Maybe, the fog machine has to be configured with the "status" parameter ?

for lines description, you have 3 essential descriptions:

D,0,255 means it's a Dimmer and defined as master parameter. A master means that it's affected by the master dimmer of the plot.
V,0,255 means a value as above but not master.

S,0,31,"lamp off"
S,32,63,"lamp on"
S,64,91,"strob on"
is generally for control parameters, which can have different value : in this example DMX value between 0..31 switch off the lamp, 32..63 switch on, etc.

In you case the description should be something like

fog amount
V,0,255 (it's not a master param)
status
S,0,31,smoke off (something like that ?)
S,032,smoke on (something like that ?)

try to get the doc of the fog machine to set the description properly?

senso

[creal]

Hello,

Thank you very much for your message.

I don't know the "status" of the DMX parameter. What I know is that it progressively increases the flow (or amount) of the fog: 0 = no fog, 40 = a little fog (continuously), 200 = a lot of fog (continously), etc.

Thanks for the details about D, V and S.

Nothing is written in the manual of the fog machine excepted this pretty useless information: "the unit has 1x DMX channel". At least, we know there is no DMX channel for switching the fog on and off. We just have the control of the amount.

I will give another try as soon as I can and will come back to give you another feedback.

Cyril.