Swedish ASIC miner company kncminer.com

[demonmaestro]

I see a custom case in my near future!

[rizzman]

A better question might be "What could a PI do for a knc miner"?
What would be the reason?

A better question might be "What could a PI do for a knc miner"?
What would be the reason?

I don't know, maybe it's:
- a proven linux platform ideal for the application
- well supported in the community (see Minepeon)
- well supported technically outside the community, with thousands of applications and many developers
- cheap

I don't know, maybe it's:
- a proven linux platform ideal for the application
..................  which requires re-flashing & programming a PI, and separate power & data connections.
- well supported in the community (see Minepeon)
.................. Exactly... The "Community" has been using it as a workaround to having an actual computer connected to the miners... "Macguyvered."
- well supported technically outside the community, with thousands of applications and many developers
.................. But not needed, and an extra device to deal with
- cheap
.................  Yet it is extra cost AND time to set up.

Okay, I was giving you the benefit of the doubt -  but it's now obvious that you really are clueless. I'm done with this "conversation"

whatever....   again..  Forgive me, but using a Pi on a KNC seems a huge waste of time, resources, and equipment you already paid for, and for no advantage since the embedded so-dimm Linux module already has everything you need, and more. I don't mind at all u think I'm "Clueless"... I was thinking same of you. Fair enough...

... I think he is trying to infer that they may have used a rPi as the embedded linux... and as for the re-flashing / programming, this is totally incorrect, Raspberry pi's run a standard ARM build of linux off of an integrated SSD card. There would be very little retooling involved with these little guys, the units themselves have both integrated USB as well as capacity to feed and poll information via GPIO interface.

I for one would have no problem with them using rpi's for the embedded linux platform. They're a solid choice

[mbbc]

I assume that it is to power the on board Linux OrSOC device?

It looks like a Beaglebone.   Further, the cut-out to the left  looks as though it might be for a rPi.

You could be right, here's a comparison:
https://i.imgur.com/Km8BtqE.jpg

Also note the round edges.

[rolling]

Anyone know what they are doing as far as working with cgminer or bfgminer.. it seems that they are writing some middle open source communication layer for cgminer.. but what if cgminer changes things, will KNC always have to update this open source miner or does it now become the job of cg and bfg to make changes .. also is this a good idea to do this? I mean they claim a 30% increase using their in-between layer but well..

anyone have any ideas or more incite.

The way I see it, they took the open source CGMiner code as a starting point and developed their own version. It is not really "CGMiner" anymore.  It is more like "KNCMiner based on CGMiner".  It is a fork of CGMiner and both forks will go in different directions over time. KNC will have to update their version from this point forward.

[RChevalier]

Anyone know if these heatsinks can be rotated at all?  From the picture it looks like there is a mounting screw at the front to the board (and I' assuming the back as well) but none on the side.

[the-skeptic]

You know what I wanna see? An owners manual and CE certification. They have to have them in order to meet customs, right? Give us some owners manual pdf love, fellas!

[DeathAndTaxes]

Alright guys, some of you have a lot more knowledge then me in the PSU area, so if you could help me out here, I'd appreciate it.
I have a Saturn on order, which I plan to upgrade to Jupiter once they start offering the modules separately. The PSU that I have picked out seems like a perfect fit to me, and at a fairly good price. If you guys could look it over and let me know, that would be great. And if it is a good one, it could turn out to be a good deal for everyone.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011

Should be the minimum acceptable wattage for a power supply.  I'd recommend going with something around 1kw... They are much more efficient at 50 % load versus 80 - 90 % load.

That hasn't been true for the last decade but it is a myth which dies hard.

The minimum efficiency for an 80-Gold PSU is 90% at 50% load and 87% at 100% load.  The curve is very flat.

For example here is the test for the PSU linked to:
http://www.plugloadsolutions.com/psu_reports/CORSAIR_CMPSU-850HX_ECOS%201464_850W_Report.pdf

50% load = 90.38% efficiency
75% load = ~90.0% efficiency (estimated due to their horribly low res chart)
100% load = 87.06% efficiency

So using a larger PSU would save you maybe 1% in power, 3% under the extreme example of 100% load vs 50% load.  At 1% power on 600W 24/7 would save you 53 kWh per year.  At $0.10 per kWh we are talking $5.  Spending $50 more on a PSU makes the break even 10+ years. At once time PSU were pretty shitty with narrow "sweet spot" (40% to 60% of peak power), and efficiency tanked (<70%) outside of that.  This is where the advice of buy 2x the needed power.  Those days are long gone thanks to the 80 Plus program and even lower end 80Plus PSU have an almost flat efficiency "curve" for loads anywhere from 20% to 100%.  It is nice companies keep making more and more efficient PSU (Platinum and Titanium are also possible) but once you get to ~90% it starts being diminishing returns.    Still Google and facebook use custom PSU which only output 12V to get 95%+ efficiency.  Really there is no reason for PC PSU to be as complex as they are.  Maybe some future standard will improve that.  

[sobani]

You know what I wanna see? An owners manual and CE certification. They have to have them in order to meet customs, right? Give us some owners manual pdf love, fellas!

If I read Wikipedia correctly, they can basically slap that marking on their device by themselves. Also they're targeting businesses, I don't know how much that impacts the need for certifications.

[sobani]

At once time PSU were pretty shitty with narrow "sweet spot" (40% to 60% of peak power) and horribly efficiency outside of that (<70%).  Those days have been gone for a long time with most quality PSU having an almost flaw efficiency "curve" from 20% to 100%.

Yup, the Coolermaster V1000 I bought for my Jupiter has a graph on the back side with their claimed efficiency, which goes from 90% (100% load) to about 93% (50% load) to 92% (20% load) efficiency.

However, there is also a graph for the fan speed which goes from about 1200 RPM at 75% load to about 2300 RPM at 100% load. So there it might matter.

[the-skeptic]

You know what I wanna see? An owners manual and CE certification. They have to have them in order to meet customs, right? Give us some owners manual pdf love, fellas!

If I read Wikipedia correctly, they can basically slap that marking on their device by themselves. Also they're targeting businesses, I don't know how much that impacts the need for certifications.

I don't give a damn about CE markings since I live in the U.S. But, I was under the impression that BFL is still having rigs seized in EU customs for both the CE markings and missing owners manual in the proper language. Just hoping KNC is way out in front of this. Then again, releasing the manual will probably spill the beans on a lot of 'insider info' they don't want public yet.

[dropt]

You could be right, here's a comparison:
https://i.imgur.com/Km8BtqE.jpg
Also note the round edges.

Serious congrats for being the first to take the extra step.  I'm amazed that it took almost 2 pages of people pissing in the wind to do a simple image search.

[bitcoiner49er]

You know what I wanna see? An owners manual and CE certification. They have to have them in order to meet customs, right? Give us some owners manual pdf love, fellas!

No ASIC company yet has been CE certified.  It takes weeks (possibly more than a month) costs thousands of dollars and can't be completed until the unit is shipping ready.  It isn't going to be CE certified.

[crumbs]

I assume that it is to power the on board Linux OrSOC device?

It looks like a Beaglebone.   Further, the cut-out to the left  looks as though it might be for a rPi.

You could be right, here's a comparison:

Also note the round edges.

Great eye.  You [both] win three internets and a kitty.  Amazing.

[DeathAndTaxes]

I stand utterly corrected.

[dropt]

Great eye.  You [both] win three internets and a kitty.  Amazing.

F'ing SWEET.  Where do I collect?

[mbbc]

Great eye.  You [both] win three internets and a kitty.  Amazing.

Yay! 

[vesperwillow]

I want half a kitty and 3 unobtaniums.

[crumbs]

F'ing SWEET.  Where do I collect?

& mbbc:  New PR guy will taek caer of stuffs 4U.
vesperwillow:  Your new kitty is busy, shooping graphical designings 4 Ken's new website.  B patient pl0x.
  
    -- Advisory Cats, Active Mining & Catteries.

Edit:  Wrong thread

[The Avenger]

I assume that it is to power the on board Linux OrSOC device?

It looks like a Beaglebone.   Further, the cut-out to the left  looks as though it might be for a rPi.

You could be right, here's a comparison:


Also note the round edges.

Well spotted! It's a dead ringer. This'll be what the 5v requirement was about.

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

[Henchman24]

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

Possibly the molex to the right provides power for it?