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PostPosted: Fri Dec 02, 2011 10:06 am 
Sophomore Member

Joined: Sun May 24, 2009 12:54 pm
Posts: 129
Location: Austin, TEXAS
Ok so what i mean,i have many fans that are laying around and i want to test them independent of a Thinkpad.Any solutions
on how to make a small board or testing device to hook a FAN to it and test will be appreciated.

PostPosted: Fri Dec 02, 2011 2:34 pm 

Joined: Mon Sep 18, 2006 5:17 am
Posts: 14823
Location: Mt. Cobb, PA USA
Get yourself the HD fan connector off a broken mobo.
Most Thinkpads all use the same connector.
Hook it up to a 5V power supply and test all you like.
Put a potentiometer in the + wire to be able to vary speed.
Looking at the plug, the red wire = +5V, black or blue (middle wire) = GND, orange (or other color) is RPM control
You only need +5 and GND for testing.

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