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Up Squared active cooler?
Michael Miller
New Member Posts: 95 ✭
I noticed on a video posted to youtube that you guys at one point had an active cooler design for the Up Squared. Is this something you might offer for sale in the future? Mine works fine without (gets pretty warm, but not unbearably), but I haven't really leaned on it too hard yet. It would be nice to have that as an option for those of us not really needing a totally passive solution.
Comments
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For UP Squared innovator, we ship with active cooler. So that they can try out what is the max. performance. For Kickstarter version and mass production version, it will come with a passive heatsink. Of course, we will sell active cooler as an optional accessory soon.
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Is there any idea when "soon" might be? I might just toss a fan on the stock HS if it is gonna be more then a couple of weeks.
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Count on 4-6 weeks leadtime from our factory. I will say.....probably somewhere in July.
It sounds not "soon", though. Still work on it. -
Isn't it compatible with the regular UP fan? It looks identical almost identical to one I've seen mounted on Youtube.
https://www.youtube.com/watch?v=a-LjuUCx6h4&t=3s
http://up-shop.org/up-peripherals/111-active-cooler-fan-for-the-up-board.html -
No, while the basic design is similar, the machineing on the bottom is different.
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Just out of curiosity, what voltage are the fan-pins? 5V or 12V? It'd be easy to rig a standard, small-size fan on the passive heatsink, but one would have to know the voltage.
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There is no 12v on the up board, so 5v. I have ordered a 70mm 5v fan to add to my heatsink. I realize it is overkill, but if for no other reason, it should extend the life of the board.
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Well, I assumed it'd be 5V, but it's better to ask than be sorry. As for the fan, I was planning on possibly rigging a 60mm Noctua - fan ( http://noctua.at/en/nf-a6x25-5v ) on mine, once it actually arrives some day in the future...
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Could be nice to have some more precise info on this. I don't really want to spend 20 EUR delivery on board and again the same 'x' weeks later for a fan..
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As I said, the standard up will not work on up2. The board layout is way too different. And the fan voltage is almost certainly 5v( no 12v on board and 3v3 fans are rare). I do not know what kind of current it can safely supply, but if all else fails you can always tap onto the 5v rail of the 40pin gpio port.
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It is a fan powered by 5V. Though the design concept is the same as UP cooler, the size is much bigger.
Here is the location of fan power. http://i.imgur.com/TOfWkWa.png -
Cooler is released now:
http://up-shop.org/up-peripherals/136-active-cooler-fan-for-the-up-squared.html -
I see that, though it says it won't ship until august. I did some testing with a 70mmx10mm fan on the stock heatsink, peak temps under load (cinebench R15) went from ~80-85C down to ~60-70C. It is notable that even under max load with no active cooling the CPU stayed at ~2.4GHz, so well done on the stock design, but it still runs a little hotter then I like so I will be incorporating the 70mm fan on mine.
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One thing I'd like to ask, does the fan always run at a constant speed or can its speed be adjusted via software and/or BIOS?
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As far as I can tell, it is constant. my fan is very quiet so it is hard to tell if the speed is changing. It does turn on and off with shutdown/boot.
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Strange that it should run at a constant speed rather than adjusting to the temperature in realtime. Could save a lot of energy that way.
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You'retalking about ~100-200 mA on a board that uses a 6A power supply, the difference would be minimal. To be honest, these boards are not really ideal for someone looking for super low power.
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The fan is constantly running at the same speed. We didn't use smart fan which will adjust the speed by temperature because it seems no one produces smart fan in so small form factor. If anyone finds it, please tell us. :-)
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I've never heard of a fan that adjusts its own speed automatically, I'm only familiar with either voltage-controlled or PWM-controlled fans. Usually it's the PC's BIOS that controls fan-speed via PWM-signal.
Anyways, it's not a major issue, I'll just rig my own fan-system, either via temperature-controlled switch glued to the heatsink, or a custom kernel-module that just controls the fan-speed via a PWM-signal from the GPIO-header and a transistor. -
You are right, it is using BIOS control via PWM pin.Maybe I said it in too short way. Currently we can only find 2 pin fan in so small size ( 5V + ground)...
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A self regulating Fan can archived by using a Thermistor.
Or you can read /sys/class/thermal/thermal_zone0/temp and control
a Fan with asmall Python Script. -
I designed my own, custom HAT for this purpose and I just received the PCBs todays from OSHPark. The HAT allows me to control either a DC-fan or a PC-style PWM-fan very easily, or if I want to re-purpose it at a later date I can control a resistive load or a small inductive load with it.
