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Old 01-03-2010, 09:58 PM   #371
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dumb question but the fan has a red, black, and white wire. Do you need to do anything with the white wire. Or just leave it hanging out disconnected?

Wow, the clear box with the LED fan is pretty. I might have to upgrade if the fan I got for free ever craps out on me. Until then I can't justify spending 7.99 on a fan with LED's (tigerdirect) lol. Nice job though, I am slightly jealous lol.

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Old 01-04-2010, 02:40 AM   #372
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The white wire is the tachometer sensor wire. Not needed, just tape and store the end out of the way.

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Old 01-04-2010, 11:44 PM   #373
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what size stir bar do you recommend with a box made by your original post instructions?

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Old 01-05-2010, 01:50 PM   #374
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Someone mentioned using an old linksys rounter for the 12V power supply. I happen to have an extra one of these laying around (router and power supply). I was wondering if anyone has tried taking apart the router and using the female part on the router that you plug the power suppy into (not sure what the technical names for these things are).

If I could remove this from the router and attach this piece to my project box it would allow me to easily remove power supply from stir plate when not in use. Anyone tried this?

I am not concerned about the final condition of the disposed router lol. It is extra and was sitting in my random electronics box likely to never be used again.

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Old 01-05-2010, 03:35 PM   #375
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infection, go to radio shack and you should be able to find a new female power coupler to put in your case in the appropriate size. no need to hack the old one apart. for example, if your power supply was size N:

http://www.radioshack.com/product/index.jsp?productId=2102599

if you can't find exactly the size you need, cut the end off the power supply and buy any matched set of male/female for power. they'll have quite a selection.

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Old 01-05-2010, 03:40 PM   #376
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Cool. I might have to spend the extra three bucks and pick up one of those. This project is getting up there. That would put me at 23 dollars total.

................ forgot the stir bar ....... going on 30 lol

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Old 01-11-2010, 02:09 AM   #377
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Quote:
Originally Posted by slakwhere View Post
infection, go to radio shack and you should be able to find a new female power coupler to put in your case in the appropriate size. no need to hack the old one apart. for example, if your power supply was size N:

http://www.radioshack.com/product/index.jsp?productId=2102599

if you can't find exactly the size you need, cut the end off the power supply and buy any matched set of male/female for power. they'll have quite a selection.
So I bought piece mentioned above. I'm not completely sure that I have it wired correctly though. It has three prongs. One labeled "center pin", one labeled "shell", and a third that has an arrow pointing from it back to the "shell" prong. This prong is labeled "normally closed" switch.

From what i could find online, I connected a black wire to the "center pin" prong and a red wire to the "shell" prong and proceeded as the O.P. described.

Anyone know what I did wrong here?
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Old 01-11-2010, 02:14 AM   #378
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Yeast infection, the center pin is usually positive, so in this case you want to wire it to the red wire.

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Old 01-11-2010, 02:19 AM   #379
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Thanks! Got it working. Now just waiting for my stir bar to come in so I can make some final adjustments and get some yeast going.

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Old 01-11-2010, 05:53 AM   #380
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yes wiring the positive side to the shell will open you up to shorting/grounding possibilities which would be bad. hot in the center, ground on the outside.

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