low voltage supply, 10 channel DMX controller

[matthew venn]

Hi hackers!

Arcola Theatre is doing a show with fuel cell powered lighting and
we've got our hands full with the power supply.

We also need a 10 channel DMX controller for 10 lights, there doesn't
seem to be any products on the market that run off 24v, which is what
our fuel cell will supply

Anyone know if one of these exists? Or maybe you've built one?

Thanks!

Matt

[Nigel Worsley]

> We also need a 10 channel DMX controller for 10 lights, there doesn't
> seem to be any products on the market that run off 24v, which is what
> our fuel cell will supply

http://interstellar.com/support/DC_Dimmer/Instruction_Manual_DC_Dimmer_4CH-2.pdf

Nigle

[Mark Steward]

On Thu, May 19, 2011 at 11:11 AM, matthew venn <matth...@gmail.com> wrote:

Hi hackers!

Arcola Theatre is doing a show with fuel cell powered lighting and
we've got our hands full with the power supply.

You're powering lights off it?  Wow...

 

We also need a 10 channel DMX controller for 10 lights, there doesn't
seem to be any products on the market that run off 24v, which is what
our fuel cell will supply

Anyone know if one of these exists? Or maybe you've built one?

An arduino can do this, depending on what you need.  I'd be happy to help if that's the way you decide to go...

Mark

[Martin Klang]

how much power does it need to output?

/m

[Dirk-Willem van Gulik]

On 19 May 2011, at 11:11, matthew venn wrote:

> We also need a 10 channel DMX controller for 10 lights, there doesn't
> seem to be any products on the market that run off 24v, which is what
> our fuel cell will supply

How many amps per light ? And is it simple on/off or more complex ? If it is less than a few Amps and mostly on/off - a simple arduino/mosfet or even easier, relays, may tide you over.

Dw.

[matthew venn]

great thanks, looks good, but can't find any UK suppliers. Do you know
if I could get some of these in the UK?

> http://interstellar.com/support/DC_Dimmer/Instruction_Manual_DC_Dimme...
>
> Nigle

[matthew venn]

> You're powering lights off it?  Wow...

Low power DC lights hopefully!

>
> An arduino can do this, depending on what you need.  I'd be happy to help if
> that's the way you decide to go...

Yeah, I just don't want to do it! I ideally want something already
done or off the shelf because we're on a super tight deadline (like
always!). Thanks for the offer though!

Matt

[Mark Steward]

We've already got working systems.  Do you have any more information on deadline, number of cues, etc?

Of course, if by DMX controller you mean the DMX-controlled dimmer, an arduino wouldn't be enough.  Are you saying you already have a lighting desk of some kind?

Mark

[Dirk-Willem van Gulik]

On 19 May 2011, at 11:31, matthew venn wrote:
> Yeah, I just don't want to do it! I ideally want something already
> done or off the shelf because we're on a super tight deadline (like
> always!). Thanks for the offer though!

Perhaps give http://picprojects.org.uk/projects/dmx/dmx688/index.htm a call - they may have some in stock.

Another option - if you are really on 12V or 24V and nothing else are Power Commanders. They seem to be available in the UK from quite a few places:

http://www.elektoled.co.uk/PhpCatalog/33,0,constant-voltage-dmx-modulated.html
http://www.bluearan.co.uk/index.php?id=VCOLEDC52&product=Visio_Color_Mood_Power_Commander_(LED-PC300)
http://prolight.co.uk/item/LEDC52/

and find one of the older ones which take 24V in or modify the newer types by bypassing the build in 240->24V circuit. Older models are like

http://www.tronix.nl/html/artikelgroep.aspx?artikelgroepcode=GEN0000007
eg
http://www.tronix.nl/html/artikel.aspx?artikelgroepcode=GEN0000152&artikelcode=L-CNTR-12-24-DMX

which take 12 or 24V in. Searching for flexistrip dimmer should yield a plenty.

Dw.

[Adrian Godwin]

HGVs generally run off 24V.

As a result, there are various products made for that market that will
convert 24->12 or 24->240V.

24->12 will be more efficient if you can obtain a 12V DMX controller,
but make sure you get the more expensive switching converters - there
are cheap ones available that waste a lot of power.

-adrian

[matthew venn]

yes sorry, completely unclear here. We need a 10 channel DMX dimmer.
Each bulb is 50W running at 24v.
The dimmer needs to run at 24->28v.

On May 19, 11:42 am, Mark Steward <markstew...@gmail.com> wrote:

[Martin Klang]

I'd be up for building this for you, time constraints permitting.

When do you need it for? What's your budget (for materials)?

/m