Many Deluxe 8 boards, one switch

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ChrisQ
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Joined: Fri Jul 02, 2010 11:53 pm
Location: Baltimore, MD

Many Deluxe 8 boards, one switch

Post by ChrisQ »

I'm looking for some input and advice. After I bought the 1:350 refit and lighting kit, I realized I needed to start smaller to gain some experience. I have just received the first of several Deluxe 8 boards I will be buying (thanks STM) and will be learning on a few small models first. They will all be displayed in the same room, and over the years I will add more as they are completed.

I wish to be able to walk into the room, hit a single toggle mounted next to the light switch, and have all the models light up. I think they all will be the Deluxe 8 kits, and I want to be able to support 8-10 of them.

I have been thinking about this for some time now and since I have the first lighting kit in hand it's time to start researching. I made a caveman drawing to give an idea of what I am thinking. I have a very limited and basic knowledge of electronics so if there is something I am not considering or missing altogether please point it out. Assume I know nothing. I am here to learn.

I guess the biggest question is - is there a 9v transformer out there that can handle 8-10 of these boards? If not I am open to any and all suggestions on how to accomplish this.

http://img.photobucket.com/albums/v260/ ... ghting.jpg


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Madman Lighting
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Post by Madman Lighting »

A very good question.

There are a couple ways to do this.

1) Several small wall power supplies, each one powering one model, all plugged into a power strip with a switch on it. If the wall light switch in your room turns on a wall outlet, plug the power strip into the wall.

2) Get a very big wall power supply, 12VDC preferred, and plug it into the above mentioned switched wall outlet.

The formula for how big to buy goes like this: Each Delux-8 card draws about 0.1 amps (ie 100mA). So, if you want to run 10 cards, you would need 1 amp of power from your wall power supply. So you'd buy a wall power supply that makes 12 volts DC, with a power rating of at least 1 Amp.

This device will work:
http://www.mouser.com/ProductDetail/Eme ... J2KGqco%3d

Now comes the slightly more complicated part. You need a way to get power from your one big supply to each model. There's very many ways to do this. The simplest is to buy a bunch of DC power jacks and sockets, like the kind that powers all your small electronics from a wall power supply and make a power distribution box. This would be a box that your big power supply goes into, and has lots of places for models to plug into. Basically a distribution node.

Unless you feel comfortable wiring up such a beastie, buy lots of small power supplies and a power strip. Its simpler to build and if you mess up one, all the rest will still work.

This device will work for just one of my cards:
http://www.mouser.com/ProductDetail/Phi ... 9jdL2W8%3d

This device will power 3 of my cards (ie a BIG Starship Kit)
http://www.mouser.com/ProductDetail/Sta ... oGHg%3d%3d

Good luck!

Or, you could buy a supply directly from me if you want to be nice and all that. :wink:
That Madman Who Lit Up Deep Space Nine
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Dieghigno
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Post by Dieghigno »

or you can take an old ATX power supply and convert it... ;)

http://www.instructables.com/id/ATX--%3 ... onversion/
Madman Lighting
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Post by Madman Lighting »

That would work too. Since most of have at least one lying around, its pretty cheap too.
That Madman Who Lit Up Deep Space Nine
ChrisQ
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Post by ChrisQ »

Ok guys I didn't realize that people had responded to my thread so I am sorry for not replying sooner.

Modifying the PSU is exactly what I am going to do. Thanks!

I am also building a spray booth at the moment and came across this exact same problem when figuring out how to power three 1.6 amp 12v muffin fans. I didn't want to use a power supply with leads hanging all over the place but they don't seem to make a 5 amp wall wart. I could modify a laptop charger but if I'm going through all of that I may as well modify a PSU that I've already got lying around and make it look halfway decent.
ChrisQ
Posts: 142
Joined: Fri Jul 02, 2010 11:53 pm
Location: Baltimore, MD

Post by ChrisQ »

Minor update - I modified my first PSU tonight and it worked out great. No explosions and I learned a bit about electronics.

The 3 muffin fans I am running off of it pull 1.6A each. The power supply peaks at 18A on the +12v rail. I can't imagine that a lighting kit without any fans or motors pulls more than 1000mA (probably much less) so I figure I will run out of room to display models before I overtax the power supply.

Thanks again for the ideas.
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