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Add RPM monitoring to a (papst) fan
Howto by terangreal @ 2003-02-14
A very quick, simple and basic howto - taking no more of your precious time then 5 minutes !
introduction
INTRODUCTION:
In all it's simplicity, this mod will only be useful to some among us. If you're using your own funky & flashy bay- or rheobus, then don't bother to try this one. On the other hand, people who like hooking their fans up to expensive gadgets like the digiDOC or innovaControl systems - or simply their motherboard : I kindly invite you to try this one out!
Exactly what am I going to explain you?
Well, I got this idea when working on a friend's rig. He wanted a more silent system, but didn't fancy a baybus or something alike, so I just suggested to put a Papst 8412NGM on his heatsink. Not much to it, as I had some spare 80mm fans here. While installing it, I noticed there wasn't a single molex unused. Simple - just connect it directly to one of the 3-pins connectors on the mobo. Only problem left: the fan only had two wires. While soldering on a 3-wire connector, it came to my attention that the PCB had 3 connections. So not only could I let the fan take it's juice from the motherboard, I could give my dear friend RPM monitoring quite simply.
If it's not completely clear : the 3 coloured circles are each representing a connection point on the fan's PCB.
(yellow = RPM monitoring / red = +12V / blue = ground). Many of you can probably do it by yourself from here on, but read on and I'll tell you exactly what to do.
In all it's simplicity, this mod will only be useful to some among us. If you're using your own funky & flashy bay- or rheobus, then don't bother to try this one. On the other hand, people who like hooking their fans up to expensive gadgets like the digiDOC or innovaControl systems - or simply their motherboard : I kindly invite you to try this one out!
Exactly what am I going to explain you?
Well, I got this idea when working on a friend's rig. He wanted a more silent system, but didn't fancy a baybus or something alike, so I just suggested to put a Papst 8412NGM on his heatsink. Not much to it, as I had some spare 80mm fans here. While installing it, I noticed there wasn't a single molex unused. Simple - just connect it directly to one of the 3-pins connectors on the mobo. Only problem left: the fan only had two wires. While soldering on a 3-wire connector, it came to my attention that the PCB had 3 connections. So not only could I let the fan take it's juice from the motherboard, I could give my dear friend RPM monitoring quite simply.
If it's not completely clear : the 3 coloured circles are each representing a connection point on the fan's PCB.
(yellow = RPM monitoring / red = +12V / blue = ground). Many of you can probably do it by yourself from here on, but read on and I'll tell you exactly what to do.
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