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paul.milne
02-07-2011, 09:58 PM
Please help with some design considerations for a self etch project.

I'm looking building an LED flood light setup something like this:
http://bigclive.com/flud.htm
http://i280.photobucket.com/albums/kk164/bigclivedotcom/flud11.jpg

I'm planning on putting it in something like this:
http://www.lyntoria.net/floodlight_housing.jpg

I'm thinking about putting all of the circuitry inside the floodlight box, i.e. power conversion, the SSR interface, and the board with the LEDs.

I would be using a Ren64 (or similar) to control it. I was going to use four channels, i.e. one RJ45 connection. One channel will be wasted, but the other three would control the RGB portion. I was figuring on using vixen's dimming feature to give the various colors for the three channels.

Furthermore, I was going to get a transformer, prebuilt, to power it. So I'm wondering what voltage to run it at. I looked at the following:
http://doityourselfchristmas.com/wiki/index.php?title=4_Channel_DCSSR_Assembly_Instructi ons

The optoisolator takes 5V, so I know I have to provide that. But what is the design trade off between running every LED at 5V and running three in series at 12V or even perhaps running six in series with 24V?

The lower the voltage the more resistors, and I'll have to provide more than one voltage regulator if I have 12 or 24V, but what else?

Finally, is there a completely differnt way I should be going about the whole thing? Perhaps one that won't waste a channel? Do I have any other flaw in my logic in trying to implement this?

thanks,

paul

RPM
02-07-2011, 11:25 PM
I had worked on something like this some time ago, and the problem I see is finding a power transformer small enough to fit into the enclosure with all of the other circuitry.
It seems that most people here use the MightyMini LED floods with external DC SSR's, but there's no reason the DC SSR along with the Renard circuitry can't be built into the case.
Are you planning on using the 150, 250 or 500 watt lamp enclosures? The 500 may work better for fitting the transformer.

As far as voltage goes, you may want to consider 24v for efficiency and series the LED's.
This is what the MightyMini uses, here;
http://doityourselfchristmas.com/forums/showthread.php?7799-Introducting-quot-The-Mighty-Mini-quot-RGB-W-LED-Flood&highlight=MightyMini

paul.milne
02-08-2011, 09:03 AM
Thanks for the feedback. I was planning on using an external transformer, just run the wire in. I thought about putting it inside, if I built my own I think it would fit, but I was worried about how much heat I would produce. I have the 500W light, because when I went to the store, they didn't have the 150, and the 250 was $5 more than the 500... seemed like a no brainer to get the cheaper one with more room to put in circuitry.

I looked briefly at the MightyMini and will spend some more time reviewing that before I make any more decisions. Thanks for the info.

kychristmas
02-08-2011, 11:16 AM
Thanks for the feedback. I was planning on using an external transformer, just run the wire in. I thought about putting it inside, if I built my own I think it would fit, but I was worried about how much heat I would produce. I have the 500W light, because when I went to the store, they didn't have the 150, and the 250 was $5 more than the 500... seemed like a no brainer to get the cheaper one with more room to put in circuitry.

I looked briefly at the MightyMini and will spend some more time reviewing that before I make any more decisions. Thanks for the info.

For cost considerations and for comparison to building your own, you may want to take a look at the Rainbow Floods
(http://www.christmasonmanor.com/store/product.php?id_product=14) I love the Mighty's design, but its probably the most expensive RGB flood to build. It does have the separate White Channel so it may not be a fair comparison

LabRat
02-08-2011, 12:33 PM
I looked briefly at the MightyMini and will spend some more time reviewing that before I make any more decisions. Thanks for the info.

If you don't want to do 24v, I have spun a similar board but targetting 12v (two sets of parallel chains of LED's, versus one single chain). I think the board/gerbers etc are in the 'files' section of the Wiki. I'm not offering boards for sale.. you can take the files and get your own boards made cheaper than me sending any from here.

paul.milne
02-08-2011, 10:56 PM
Thanks for the advice - to all. The rainbow floodlight looks like quite a bargain, but I'm not sure I can resist the do-it-yourself option and make my own. I find the learning experience in the do-it-yourself projects to be invaluable. Perhaps after messing it up a few times myself I'll be ready to buy the true and tested version :)

Thanks again for all the input, it's hard not to rush out and buy some parts before all the research.

kychristmas
02-08-2011, 11:14 PM
There's a kit option too! At least that's semi DIY and certainly as DIY as the the Mighty Mini.


Thanks for the advice - to all. The rainbow floodlight looks like quite a bargain, but I'm not sure I can resist the do-it-yourself option and make my own. I find the learning experience in the do-it-yourself projects to be invaluable. Perhaps after messing it up a few times myself I'll be ready to buy the true and tested version :)

Thanks again for all the input, it's hard not to rush out and buy some parts before all the research.

budude
02-08-2011, 11:35 PM
There's a kit option too! At least that's semi DIY and certainly as DIY as the the Mighty Mini.

It's as DIY as anything we make here unless you're etching your own boards! You simply can't beat the price of the kit - it's a heck of a deal!