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fixture template for LED lights with no intensity channel


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#1 Jason

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Posted 24 January 2010 - 06:36 AM

Hi,

Need some help to write a fixture template for the pat pad and a LED lamp fixture which has no single intensity channel - just 3 channels for each color

Basically channel map is
1 = red intensity
2 = green intensity
3 = blue intensity
4 = strobe effect
5 = fade in/out effect
6 = control channel

I want to be able to control overall intensity (for whatever RGB mix set on the pad-pad) with the Maxium Fader... Because of the way the Maxium templates work - they expect an intensity channel for the desk fader - not 3 separate dmx channels.

thanks

Jason
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#2 LSC TechSupport

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Posted 24 January 2010 - 08:23 PM

Hi Jason,

If you have the latest v3.xx software installed in your console then there is a way to create a virtual dimmer channel for the LED fixtures. Any attribute that you want to be connected to the Virtual Dimmer (yellow fader) just needs the lower case letter i inserted before the name (see sample below, but do not use the bold font when you insert the i into your template).


attribute
name = i"RED"
channel = 1
homeVal = 255

So you can have any channel/s assigned to the virtual dimmer, such as RDG, RGBA, RGBAW, etc.

There is a sample template on the download page under "Generic" brand called "RGB LED" that has this all working. I have attached a copy for your use as well.

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Richie Mickan
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#3 Jason

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Posted 26 January 2010 - 05:57 PM

Hi

Thank you.

As an FYI to others reading - I needed to upgrade to the latest software 3.3 as version 3.01 didn't work, and also had to delete and re-load the template into the library to get things working.

One thing I have noticed is I can't seem to get the LED lamps to black out when the fader is at 0% and /or the pat-pad values are set to 0 also. Not sure if it is something I have done or another issue... will post a reply if I solve.

Have also uploaded the template file in case anyone else is interested too.

thanks Jason


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#4 LSC TechSupport

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Posted 01 April 2012 - 07:26 PM

There is a small issue with the maXim's virtual dimmer function for LED's. The lowest level that the colours ever go to is 1/255. On most fixtures this is such a tiny amount of light that it is of no consequence (a bit like when we all used to run a 3% pre-heat on incandescent lamps) - all you see if a small glow when looking directly at the fixture.

However on some very cheap fixtures the dimming is not at all linear and this level of ~0.3% on DMX can result in the fixture putting out 10-20% light output. There is not much we can do about this, it is the way the fixture is designed, and whilst we are clever we cannot work miracles rolleyes.gif

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