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402
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Bitcoin / Hardware / Re: [ANN] US/North American Bitfury sales now open
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on: July 08, 2013, 02:36:43 AM
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I do wonder if the setup instructions, provide cooling info. No mention of fans in the description.
We undervolted the boards for heat & power considerations. No heatsinks are necessary, though we do expect supplemental fan cooling to be necessary - they put off about 250 - 300w fully loaded, so yeah you need to blow air on them. We didn't see the need for extensive heatsinks and individual fans that just add cost, maintenance and noise. Hi, can you please clarify what the power consumption stated above refers to? I'm confused as other posts refer to 40W per 25GH/s board. |
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403
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Bitcoin / Hardware / Re: Klondike - 16 chip ASIC Open Source Board - Preliminary
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on: June 29, 2013, 11:42:09 PM
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Ah yes, well I assume the v1 board is released when Bkk thinks its ready. Also assuming he'd release it when he thinks it is production ready while considering overclocking potential. When it would be very easy to just replace a regulator, he'd do that before the v1 release. I've not checked intentions of other board manufacturers (like terrahash).
'Substantial user experience' refers also to hardware; temperature, stability, possible overclock on current hardware (etc). My main point is that it would be strange if Bkk would release a board that could be substantially improved (to a stable v2 board) within 2 weeks, I trust him to strike a good balance between quick release and 'maturity' (being overclockability). Maybe this boundary is around 2 weeks?
Personally I think that the IR3847MTRPBF (suggested replacement regulator) may be be a non-starter as quantities are essentially zero (okay 25) from what I can see. It might be more feasible to simply drop two of the existing IR3895 parts down and have one drive 8 chips each? I'm sure Bkk will come up with something. EDIT: two more regulators and peripheral parts would be required, in addition to the two which are already present. Each would drive a bank of 4 ICs each. Spacing would be tight - but likely quite possible. |
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404
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Bitcoin / Hardware / Re: Klondike - 16 chip ASIC Open Source Board - Preliminary
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on: June 29, 2013, 11:28:49 PM
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+2 . I would wait on the rev2 board is this means a delay of 2 weeks or less.
I understand that you'd do that if it's less than 2 weeks, however thats not realistic. v2 would be made after collecting substantial user experience from the v1 and is not realistically placed in the 2 week release date difference. I expect the v1 release will consist of the most optimal and stable tested version. This practically means that if overclocking would be very very simple (within 2 week release cycle), it would be included in v1 directly. An enhanced version is possible, yet will take longer than 2 weeks. Just my 0.00000002. Great work Bkk, I'm reading each of your posts with great enthusiasm  I'm not sure what you're referring to by "substantial user experience from the v1" - this seems like more of a software-centric development mindset. Hardware development tends to be much more iterative as designs are assembled, tested, modified, assembled and retested. I'd imagine that the current "V1" board isn't going to be the "final" board - at least for board manufactures who like to err on the side of caution. I believe I recall that Bkk stated that the board was still very much a work in progress when he released the Kicad project file a few days (a week?) ago. With that in mind it's likely that the power section could be reworked to replace the current 16A regulator with the 25A part. Which could be mostly transparent - aside to those who've already purchased may boards/parts (Terrahash I'm looking at you) or those who have chips arriving in the first batches purchased from Avalon. This all hinges of course on the 25A regulator being readily available as well as any supporting components. |
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406
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Bitcoin / Hardware / Re: [Klondike] Case design thread for K16
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on: June 20, 2013, 04:53:22 PM
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Need some help, When i downloaded the files from https://github.com/bkkcoins/klondike i converted the KiCad file to vrml and later to sldprt(Solidworks part) and that looks like this http://imgur.com/Fg3O9kn which look good but there is two problems, the file is close to 100MB which is very large for a CAD file and it is laggy to work with it, and i canīt edit it or measure it. From the pictures Iīve seen in this thread it has been very few of the components on the PCB, where did you get these "more simple" files, could someone send it to me(i would prefer a sldprt file) or give me the measure of the PCB on some of the components. PCB card, 100mmx100mm height=? Diameter of holes and how far the holes is from the edge of PCB? The length,height,width and position of the rest of components(chips etc) Another question, How do i connect/power the Klondike to a computer, could it be USB, and which software does it use(is it just plug it in and mine or do I need to configure something?) VMRL import in SolidWorks is okay for basic components, but doesn't manage complex assemblies well. You may have better luck with the scanto3D plugin (which is what I used). You'll need a ton of RAM to import the full K16 model, I think I topped off at ~6GB. Here's a link to the sldprt file of the bare board with no components: https://www.dropbox.com/s/ks2hh709gpppx5d/K16-PCB-bare.SLDPRTI believe the part is actually 1.6mm, rather than 2mm as marto stated - at least as per the VRML file that Bkk provided. It makes little difference either way. Do I understand this right that the PCB is 1.6mm thick? Ente That is my understanding. |
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407
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Bitcoin / Hardware / Re: [Klondike] Case design thread for K16
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on: June 18, 2013, 03:13:26 PM
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Thanks  , but unfortunately I have Solidworks 2012 SP03, and I canīt open the file, it says it is a "future version", I donīt know how to deal with this. If you either donīt know can you tell me all the measures or upload a picture of all the measures and the PCB. I got the board 100x100x1.6 but I donīt have a measures of the holes and chips etc(it is enough with the holes but it could be good the have the other components too) Try this one: https://www.dropbox.com/s/11eznnw47fyk5wt/K16-PCB-bare.STEPOpen it as a STEP file, and it should import fine. |
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408
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Bitcoin / Hardware / Re: [Klondike] Case design thread for K16
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on: June 18, 2013, 12:17:00 AM
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Need some help, When i downloaded the files from https://github.com/bkkcoins/klondike i converted the KiCad file to vrml and later to sldprt(Solidworks part) and that looks like this http://imgur.com/Fg3O9kn which look good but there is two problems, the file is close to 100MB which is very large for a CAD file and it is laggy to work with it, and i canīt edit it or measure it. From the pictures Iīve seen in this thread it has been very few of the components on the PCB, where did you get these "more simple" files, could someone send it to me(i would prefer a sldprt file) or give me the measure of the PCB on some of the components. PCB card, 100mmx100mm height=? Diameter of holes and how far the holes is from the edge of PCB? The length,height,width and position of the rest of components(chips etc) Another question, How do i connect/power the Klondike to a computer, could it be USB, and which software does it use(is it just plug it in and mine or do I need to configure something?) VMRL import in SolidWorks is okay for basic components, but doesn't manage complex assemblies well. You may have better luck with the scanto3D plugin (which is what I used). You'll need a ton of RAM to import the full K16 model, I think I topped off at ~6GB. Here's a link to the sldprt file of the bare board with no components: https://www.dropbox.com/s/ks2hh709gpppx5d/K16-PCB-bare.SLDPRTI believe the part is actually 1.6mm, rather than 2mm as marto stated - at least as per the VRML file that Bkk provided. It makes little difference either way. |
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410
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Bitcoin / Hardware / Re: [Klondike] Case design thread for K16
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on: June 17, 2013, 02:54:11 AM
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Sheet metal frames to lock in columns of three K16s, as well as to channel airflow - essentially creating a "blade" design. Frames will likely be screwed into top/bottom plates. I'll post pictures once I'm finished the CAD work.
 Assembled "Blade" consists of three K16s and an aluminum frame. The frame has two features to secure it to the chassis: a tab on the bottom and a flange with a hole for a screw.  Blade tab fits into the slot in the chassis board and a machine screw is used to secure it down. This method is quick & dirty, but not very robust - that flange isn't going to keep things rattling around if the enclosure gets bounced around. For my purposes it's fine as I don't plan on transporting the finished enclosure anywhere. |
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411
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Bitcoin / Hardware / Re: [Klondike] Case design thread for K16
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on: June 15, 2013, 09:30:40 PM
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~800 W That appears to be 3U half rack unit. or is it 4U? I think needs some space for 1) Controler - raspberry pi 2) USB hub(s) 3) PSU So, stick in 2 of them in single 3U (full length) case, remove about 2 or 4 K16, stuck in PSU, hubs, rpi. Add in external power/network ports. Then find datacenter that'll take 1.5 KW in 3 RU... then profit. It's a 3U case. It'll have the PSU and controller (an Ubuntu box) separately as I won't be using hosted rackspace. Otherwise, yeah you could sacrifice some K16 space for the things you mentioned to create a self-contained unit. I think one challenge in your deployment will be mounting. You would probably need a lot of hex spacers of exact specific lengths, and then drill holes in in the case and mount off that asif its 3 pillars. OR mount them off the big side (which in the pic is not shown), but its going to be tricky IMHO. Whats your plan regarding mounting? Sheet metal frames to lock in columns of three K16s, as well as to channel airflow - essentially creating a "blade" design. Frames will likely be screwed into top/bottom plates. I'll post pictures once I'm finished the CAD work. |
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412
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Bitcoin / Hardware / Re: [Klondike] Case design thread for K16
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on: June 15, 2013, 08:54:39 PM
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I think we should post designes of cases, but builded with materials that many of us allready have them.. or they are easy to find and to buy... not fancy CNC drilled cases made in a fancy 3D software
I think you can think whatever you want - regardless if you know what you're talking about or not. The case I posted is readily available for internet order and would only require knocking a few holes in metal plate for fan cutouts - which could be done with a jigsaw in a pinch. I thought it might be useful for others considering similar designs, sorry you don't find it useful. |
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413
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Bitcoin / Hardware / Re: [Klondike] Case design thread for K16
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on: June 15, 2013, 03:35:05 PM
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~800 W That appears to be 3U half rack unit. or is it 4U? I think needs some space for 1) Controler - raspberry pi 2) USB hub(s) 3) PSU So, stick in 2 of them in single 3U (full length) case, remove about 2 or 4 K16, stuck in PSU, hubs, rpi. Add in external power/network ports. Then find datacenter that'll take 1.5 KW in 3 RU... then profit. It's a 3U case. It'll have the PSU and controller (an Ubuntu box) separately as I won't be using hosted rackspace. Otherwise, yeah you could sacrifice some K16 space for the things you mentioned to create a self-contained unit. |
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417
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Bitcoin / Hardware / Re: Klondike - 16 chip ASIC Open Source Board - Preliminary
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on: June 02, 2013, 03:28:57 AM
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Complete miner 8x K16 stacked on 4 200x100 heatsinks with fans and enclosure  Looks like you're using SW? If so, would you mind sharing your part/assembly files? Yes I'll send them to BKKcoins to add them to the project as soon we have a working K16 board. I did already sent a sample heatsink for single K16 to BKK for tests Excellent. Would be nice to get some IGES renders of the PCB as well |
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418
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Bitcoin / Hardware / Re: [Ann] US based Avalon ASIC chips and assembly: 4,428 remaining
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on: June 01, 2013, 05:57:13 PM
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On a serious note, if you trace steamboat's payment addresses forward in blockchain.info, you can find the 782.1 BTC payment to Avalon and quickly find what appears to be their final receiving address for chip sales
1FGAftzSTztFSB8LMwsrdCKTyqGY6zr3sU
This address contains 64,060.9 BTC. The first payment to this address was received 4/16/2013 and consists mainly of 782.1 BTC payments for 10,000 chips each. Several of the initial payments were blocks for 3,000 BTC or 5,000 BTC.
If you assume Avalon is using this address for all of their chip payments, 64,060.9 / 782.1 = ~81.9 blocks of 10,000 chip purchases.
81.9 chip purchases * 10,000 chips each * 282 MHash/chip = 231 THash/sec added to the network.
That is roughly a 2x increase over the current ~110THash/sec for the current network just for chip purchases to date. Also from the Avalon payment address it looks as if roughly 1 batch is purchased per day recently. Even with these increases the ASIC ROI on raw chip purchases and x16 open sourced boards is still quite positive.
Thoughts?
That looks about right to me. One thing I find odd is that Avalon hasn't taken ANY coins out of that address yet. I would think by now they would have taken some of that $8 million+ USD out to start paying for chip production. Not trying to spread FUD here (I'm about to place an order with steamboat) but what are others' thoughts on the Avalon sitting on the coin still? Yeah, I'm interested in hearing people's thoughts about this as well - especially given the delays in the shipment of Avalon miners. |
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420
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Bitcoin / Hardware / Re: KnCMiner Openday Wednesday 5th & Monday 10th June
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on: June 01, 2013, 05:32:59 PM
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Hi All
OK so we are ready for the open day. I know you have all been waiting but we wanted to make sure everything was 100% ready and today I can confirm it is.
Because we have had so much interest we are actually going to do 4 sessions. Two on Wednesday 5th, one at 10:00am and one at 2:00pm. Then two more on Monday 10th at 10:00am and 2:00pm
They will all be the same in content and you can meet us and ask any questions you like. We will demo the Mars mining rig with all 8 blades hashing away to the public pools.
It will be held at ORSoC's Stockholm office
ORSoC
Regeringsgatan 111
111 39 Stockholm, Sweden
We will send this out in a newsletter on Monday to catch the people who wont have a chance to read this post.
Thanks
Sam
The sound of PG's head exploding.  Written by another Date-Registered-on-April-8-2013-GUY? Makes me want to YouTube Brothers-in-Arms. Pound sand |
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