J187

Recipes 

http://www.newegg.com/Product/Product.aspx?Item=N82E16811995073



Seems like the simplest and easiest way to have complete control over the full range, including lower end.

At least, I'd imagine the controller gives you complete range control - unlike a 25ohm pot setup.

Greenbasterd

Recipes 

lol i am.. i got the idea from wierdbeer he made a video and posted it on this site few months ago.. you can get em from ebay for like 3 bucks shipped.

tjpfeister

Recipes 

Honestly, if I had it to build all over again I would probably use one of these : http://www.amazon.com/LEDwholesalers-Dimming-Controller-LED-Lights/dp/B003L4KKF2/ref=sr_1_1?ie=UTF8&qid=1348852396&sr=8-1&keywords=pulse+width+modulator

I have two of them in my control panel for manual control of the SSRs, they work great. But my mine is built with a pot and works fine too.

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J187

Recipes 

That's nice. Comes right out of the case. Perfect. I hate not having the lower range of the fan.

J187

Recipes 

I just ordered it. Mine is already built with a pot too, but if this bench tests as well as I hope, it shouldn't be too much effort to switch out my pot for this one, and just mount the controller board to the inside of the project box - the rest of the wiring will stay the same anyway. Thanks.

kh54s10

Recipes 

Nice, but that costs more than I spent for my entire build!

J187

Recipes 

And you have full range control? Or simple 25ohm Rheostat control?

ThatGeekGuy

Recipes 

The Amazon PWM controller works great, much better than a simple potentiometer.

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ClaudiusB

Recipes 

You can buy a fan with speed control from Amazon, and the speed pot can be relocated without any problems..
Available in two sizes, 80 & 120 mm.

I got the idea for the stir plate fan from this post

http://www.homebrewtalk.com/f51/yadiy-stir-plate-thread-279569/

Fan in action





Under construction video



Cheers,
ClaudiusB

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chuckjaxfl

Recipes 

What have you got going on there? Stirplate, built into the floor of tiny, tiny fridge for temp control, and forced filtered fresh air into the headspace?