PC Case fans - how to add speed control?

Does anyone know how to add a speed controller to a series of 3 or 4 PC case fans? I have a power supply from an old printer & see some quiet fans but want to be able to adjust their flow. (Max RPM may irritate the #^$%&^& out of me).

:evergreen_tree:

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The easiest by far is this, or similar doohickey from ebay for about 3 bucks. That’s the route I’d go. Pretty decent way to control a DC motor.

Search for:
12V PWM PC CPU Fan Temperature Control Speed Controller Module High-Temp Alarm

Otherwise if you have an adjustable power supply you can dial down the voltage

Happy’s $0.02

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Literally just get a case fan controller like happy says bro. Wire that to a 12v driver and away

Arctic are really good for sound too

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Have a link

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:blush: I used to be a network admin until I abandoned everything except web-browsing & email…so this is a bit embarassing but also very cool. I felt like an old man when I got a new CPU fan & saw all these fancy freon & raditator cooling systems. :tired_face: kids these days…

thanks @Colanoscopy, @HappyHemper

:evergreen_tree:

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No danger sir. Anytime

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I use one of these connected with terminal blocks and cheap speaker wire to the fans :thumbsup:

https://www.ebay.co.uk/itm/AC-DC-3-12V-2A-Adjustable-Speed-Control-Power-Supply-Adapter-Switching/323525147946?var=512563583607&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D20170920101022%26meid%3D32cfecff10ba49e0b87f18ca4ad0ea69%26pid%3D100010%26rk%3D3%26rkt%3D8%26sd%3D232985801044%26itm%3D512563583607&_trksid=p2047675.c100010.m2109

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A variable voltage wall adapter

For all my needs im using these bad boys
https://s.click.aliexpress.com/e/cVCQh0q4

But if is going to be a fan regulator purposes , those small things can be fitting anywhere even inside the power supply enclosed, 5 for less than 5 bucks, the only problem is the waiting time

https://s.click.aliexpress.com/e/bFKROurm

1 Like

:blush: So I can deduce from all of this that voltage is what determines the fan speed(within limits)?

Because I have a variable ac/dc(1A) wall adapter… :thumbsup: i.e. 1,3,5,9,12 :fire: :laughing:

:evergreen_tree:

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That’s possibly the easiest way. Hook it up to that and switch it to 9,5,3 and see the speed slow down.

I’m super old school, I use an old 100 Ohm potentiometer on my fans. :grin:

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damn, thats one sexy fan controller.

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