So findings on fans -
Ant1 - Delta 150cfm 3pin fan and stock fan as exhaust (blue wire snipped) - 36c
Ant2 - Delta 150cfm 3pin fan and stock fan as exhaust (blue wire not snipped) - 38c
Ant5 - Stock fan blue wire snipped, exhaust fan (2000rpm, ~70cfm) 40c
Ant3 - Stock fan blue wire snipped - 44c
Ant4 - Stock fan blue wire, exhaust fan (2000rpm, ~70cfm) - 47c
Topic: Control fan speed on Antminer S1 (Read 2670 times)
Just cut the blue wire. Do it. Now. It is the enemy. Eliminate it. Eradicate it. Do it. Now. You will feel better. You will look better. Your shoes will fit better. Do it. Now.
Done, Verified, Excellent.
Taking a slightly different approach to this...
I want to have more control over the fans, the units are getting very hot when left to their own devices. So I've invested in some high power 3 pin delta fans, running these at full speed they give me a -10c in temps (I've installed them on 2 out of 5 S1's), however these are noisy beasts, especially at night and I don't need them cooling that much at night.
So... I invested in a fan control with temp sensors and auto / manual fan control (NZXT Sentry), however this didn't power the fans - despite being rated for 10w fans grrr...
So I've found a Aerocool 2100 (delivery tomorrow) - not auto control, but I can just turn the fans down at night - that is rated for 25W fans. So I'll try the delta and stock fans on that, I suspect the stock fans and delta fans may give similar results.
Looking back, snipping the blue wire may have been a better bet, I maybe able to live with the stock fan noise.
I want to have more control over the fans, the units are getting very hot when left to their own devices. So I've invested in some high power 3 pin delta fans, running these at full speed they give me a -10c in temps (I've installed them on 2 out of 5 S1's), however these are noisy beasts, especially at night and I don't need them cooling that much at night.
So... I invested in a fan control with temp sensors and auto / manual fan control (NZXT Sentry), however this didn't power the fans - despite being rated for 10w fans grrr...
So I've found a Aerocool 2100 (delivery tomorrow) - not auto control, but I can just turn the fans down at night - that is rated for 25W fans. So I'll try the delta and stock fans on that, I suspect the stock fans and delta fans may give similar results.
Looking back, snipping the blue wire may have been a better bet, I maybe able to live with the stock fan noise.
Don't cut the wires! There's no need to do that!
Just remove pins 3 + 4 from the fan connector, and let them hang off. That way, you can slide them back in at any time, and you have your fan control back!
Check here for pictures on how-to: http://www.hardwaresecrets.com/article/How-to-Create-a-Three-Speed-Fan-Control-without-Spending-a-Dime/496/2
The article is talking about doing something different, but the point is you can still remove the sensor and PWM wires without cutting anything, which is always nicer.
Just remove pins 3 + 4 from the fan connector, and let them hang off. That way, you can slide them back in at any time, and you have your fan control back!
Check here for pictures on how-to: http://www.hardwaresecrets.com/article/How-to-Create-a-Three-Speed-Fan-Control-without-Spending-a-Dime/496/2
The article is talking about doing something different, but the point is you can still remove the sensor and PWM wires without cutting anything, which is always nicer.
well, I removed the 4th wire, then added a potentiometer on the power so I could control the speed (somewhat) of the fans (did the same for the intake and exhaust fans).
I don't think it's possible. If your miner's getting too hot, go to any computer store and get a 120mm case fan to put on the other side. They run like 10 bucks 
I did this, grabbed a cougar vortex and made almost no difference so I returned it.
Just cut the blue wire. Do it. Now. It is the enemy. Eliminate it. Eradicate it. Do it. Now. You will feel better. You will look better. Your shoes will fit better. Do it. Now.
If you have put on a PWM replacement fan and it runs at full spped with no rpm showing you may need to cross the blue and white wires for the frequeny and PWM. I needed to do that on one of mine to get it to operate correct
I don't think it's possible. If your miner's getting too hot, go to any computer store and get a 120mm case fan to put on the other side. They run like 10 bucks
Short of clipping the 4th wire, how can I set the PWM on the S1's fan to control the RPMs?
(I have poked around the miner's filesystem looking for a config file, but didn't find one)
(I have poked around the miner's filesystem looking for a config file, but didn't find one)
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