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Old 10-22-2011, 07:13 AM   #1
HenryVance3
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Default PWM Stir Plate Plans

I have been searching for good PWM plans and found a some that are worth sharing. For those who are wanting modulated overkill click this link

http://www.overclockers.com/pwm-fan-controller


I went the route of so many before me with the project box from radio shack and some fan I scrounged along with Hard drive magnets. I also found a lot of DC plugs from 6 volts to 12volts with a type M plug. This is important because you can get a female adapter at Radio Shack pictured in the back right corner of my box for a clean connection.

I will post more as my project continues.....

What is the best way you all have found to balance the magnet on the fan?



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pwm-004.jpg   pwm-003.jpg  
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Old 10-22-2011, 11:03 PM   #2
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Just for all the people out there that dont wanna solder a board, can we get a close up of the prototype power, so we can see which legs are on each row and column?

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Old 10-23-2011, 02:56 AM   #3
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The outside tab is the ground and the inside nipple is the power lead.
the fin was in the way of the nut so I melted it back with the soldering iron in a lazy quick fix

I don't follow what you are asking with the legs on each row and column? Here is the main link I got off HBT

http://www.homebrewtalk.com/f51/my-s...y-build-86252/

pwm-003.jpg  
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Old 10-23-2011, 03:05 AM   #4
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[quote=HenryVance3;3414418]

Quote:
I don't follow what you are asking with the legs on each row and column?
I'm guessing he thinks you wrote the linked article and wants to see a closeup of the bread boarded implementation...

Cheers!
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Old 10-23-2011, 05:13 AM   #5
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well I expect he didnt write the linked article, but he made his own, so I wanted to see a close up of his board

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Old 10-23-2011, 06:10 AM   #6
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I am in the process of soldering it still. I still need one mCapacitor #3 and then I will get to try it out...

pwm-007.jpg   pwm-008.jpg  
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Old 10-24-2011, 04:08 AM   #7
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nice thanks

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Old 10-24-2011, 04:27 AM   #8
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This actually is turning out to be easier than I anticipated. So far only like two hours in to the project. (which on one hand is disappointing because it is winter in Alaska and this was supposed to kill more time, oh well more time to brew...)

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Old 10-24-2011, 05:50 PM   #9
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A standard house wall dimmer and plug in a 2-gang box is a ton easier and can be built within a matter of minutes. Wall dimmers are nothing more than PWM circuits.

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Old 10-24-2011, 08:32 PM   #10
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Quote:
Originally Posted by jcaudill
A standard house wall dimmer and plug in a 2-gang box is a ton easier and can be built within a matter of minutes. Wall dimmers are nothing more than PWM circuits.
I considered that and decided to make my life more complicated by learning basic breadboarding +1 for keeping it simple with the dimmer.
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