I've got a Buffalo HD-QL8TSU2R5 4-disk SATA enclosure that I'm working on at the moment. From the factory, the 80mm fan only runs "when needed". There's no speed adjustment or switch to leave it on all the time. What I've found is that whatever triggers the fan to come on isn't doing so often enough. The enterprise drives contained within are cooking themselves.
I thought it'd be simple enough to rig it up that the fan runs all the time. The fan itself is a nice Nidec UltraFlo rated for 12v 0.10a. My first thought was that I might be able to hack the fan controller somehow, but I'm familiar with how they work, or even what I'm looking for on the board.
My second thought was just to wire the fan into a 12v wall wart and power it separately. However, none of my spare adaptors laying around will kick it over. I get a little twitch out of it and then nothing. I suspect it may be because I only have a switching supply to use... but that same supply is able to run a much larger Nidec Beta V, so it's possible that the load actually isn't enough with the smaller fan. I also don't know if this fan would require something to be connected to the speed sense (yellow) pin to function.
Any suggestions would be welcome.
I thought it'd be simple enough to rig it up that the fan runs all the time. The fan itself is a nice Nidec UltraFlo rated for 12v 0.10a. My first thought was that I might be able to hack the fan controller somehow, but I'm familiar with how they work, or even what I'm looking for on the board.
My second thought was just to wire the fan into a 12v wall wart and power it separately. However, none of my spare adaptors laying around will kick it over. I get a little twitch out of it and then nothing. I suspect it may be because I only have a switching supply to use... but that same supply is able to run a much larger Nidec Beta V, so it's possible that the load actually isn't enough with the smaller fan. I also don't know if this fan would require something to be connected to the speed sense (yellow) pin to function.
Any suggestions would be welcome.
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