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Operatr
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July 27, 2013, 10:32:19 PM |
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 That looks awesome, already been working to fund one of these myself  By the way, this project would go nicely with Bitfury rigs for standard ATX power that takes care of both the boards and the Pi: https://bitcointalk.org/index.php?topic=263567.new#newI know this is still in a prototype stage, but are there any specs available as far as the physical aspects (Size, mounting holes, etc)? Like many I'm sure, I am wanting to start mapping out some kind of mounting system/case.
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Sp0tter
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July 27, 2013, 11:10:52 PM
Last edit: July 30, 2013, 12:21:41 PM by Sp0tter |
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I put in a refund request today on the website, will update and let everyone know how that goes. (Ordered 1 25gh/s kit + 7 h-boards for ~49 btc.) EDIT: Received the proper refund in btc on the next buisness day after submitting. (Lost 1.2 btc in the exchange rate, but thats just life ) +1 for their refund policy. |
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klondike_bar
Legendary
 Offline
Activity: 2128
Merit: 1005
ASIC Wannabe
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July 28, 2013, 12:02:52 AM |
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I think an upper edge slot brace is a good idea. These are hand made prototypes, so Cscape used the caps he had on hand - I know he recommended a larger cap along the way too, so perhaps you are seeing the newer assembled boards vs the boards he made a couple weeks ago.
There was a mismatch between the capacitor shape on the board, and the capacitor mentioned in the parts list. I ordered the (smaller) caps on the BOM, but noticed it didn't really fit well on the footprint on the board. I put the small ones on anyway (with hand soldering it is just possible to do that), but ordered the bigger ones for a better fit, and used those on later boards. Electrically they both work, so there was no need to replace the smaller ones on the first couple of boards. thanks for the response, I wasnt sure if i was seeing things or if there were just different versions of board in there. there is a decent amount of PCB space between boards. Is there a reason for that, or will version 2 boards be designed more densely in order to shrink the size? |
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Kaega
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July 28, 2013, 01:35:24 AM |
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I put in a refund request today on the website, will update and let everyone know how that goes. (Ordered 1 25gh/s kit + 7 h-boards for ~49 btc.)
Can I inquire why you would want a refund? |
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jspielberg
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July 28, 2013, 01:45:51 AM |
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I put in a refund request today on the website, will update and let everyone know how that goes. (Ordered 1 25gh/s kit + 7 h-boards for ~49 btc.)
Can I inquire why you would want a refund? My guess is that he doesn't believe that 200GH received at the end of October will return 49btc in its useful life. My calculations are very rough, but I get 54 total BTC... so a very slight profit but risky. If BTC price can get up a bit higher, I am interested in the october delivery, but with current prices, the risk/reward just isn't there for me yet. My calculations may be ridiculous though as I am forecasting 130M on Nov. 1st. |
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Sp0tter
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July 28, 2013, 03:24:21 AM
Last edit: July 28, 2013, 03:39:27 AM by Sp0tter |
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I put in a refund request today on the website, will update and let everyone know how that goes. (Ordered 1 25gh/s kit + 7 h-boards for ~49 btc.)
Can I inquire why you would want a refund? My guess is that he doesn't believe that 200GH received at the end of October will return 49btc in its useful life. My calculations are very rough, but I get 54 total BTC... so a very slight profit but risky. If BTC price can get up a bit higher, I am interested in the october delivery, but with current prices, the risk/reward just isn't there for me yet. My calculations may be ridiculous though as I am forecasting 130M on Nov. 1st. I am forecasting ~150M on Nov. 1st with an avg of 20% diff increase per cycle until then. With that model, 200 GH/s at 49 btc never pays off. What might happen though is in a month for now diff is so high that Bitfurry slashes prices for current orders to keep everyone from backing out, and then I cry because I lost my place in line |
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cscape
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July 28, 2013, 06:17:30 AM |
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there is a decent amount of PCB space between boards. Is there a reason for that, or will version 2 boards be designed more densely in order to shrink the size?
There are no plans to shrink the size right now. Of course, the closer the boards, the more difficult it will be to get the heat out. Maybe after more real-world data, a size shrink could be done. |
Happy with your c-scape product ? Consider a tip: 16X2FWVRz6UzPWsu4WjKBMJatR7UvyKzcy
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dracore
Member
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Activity: 111
Merit: 10
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July 28, 2013, 06:33:32 AM |
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So far what is the wattage use of the prototype?
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benny32
Newbie
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Activity: 16
Merit: 0
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July 28, 2013, 03:30:24 PM |
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That looks awesome, already been working to fund one of these myself By the way, this project would go nicely with Bitfury rigs for standard ATX power that takes care of both the boards and the Pi: https://bitcointalk.org/index.php?topic=263567.new#newI know this is still in a prototype stage, but are there any specs available as far as the physical aspects (Size, mounting holes, etc)? Like many I'm sure, I am wanting to start mapping out some kind of mounting system/case. I looked at that too for my enclosure but I don't think it will work because the hboard is using the GPIO pins and so do that little switching device. |
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klondike_bar
Legendary
Offline
Activity: 2128
Merit: 1005
ASIC Wannabe
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July 28, 2013, 04:15:14 PM |
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there is a decent amount of PCB space between boards. Is there a reason for that, or will version 2 boards be designed more densely in order to shrink the size?
There are no plans to shrink the size right now. Of course, the closer the boards, the more difficult it will be to get the heat out. Maybe after more real-world data, a size shrink could be done. I was thinking more about shriking the H-boards, not the m-boards. right now, there is a decent gap between each bitfury chip that could surely be reduced with some design revisions or adjustment of resistor placement. However, this would still increase the heat density... |
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Operatr
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July 28, 2013, 04:17:59 PM |
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That looks awesome, already been working to fund one of these myself By the way, this project would go nicely with Bitfury rigs for standard ATX power that takes care of both the boards and the Pi: https://bitcointalk.org/index.php?topic=263567.new#newI know this is still in a prototype stage, but are there any specs available as far as the physical aspects (Size, mounting holes, etc)? Like many I'm sure, I am wanting to start mapping out some kind of mounting system/case. I looked at that too for my enclosure but I don't think it will work because the hboard is using the GPIO pins and so do that little switching device. It was stated the cards will be mini-molex by Buzzdave on the next revision |
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cscape
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July 28, 2013, 04:58:42 PM |
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I was thinking more about shriking the H-boards, not the m-boards. right now, there is a decent gap between each bitfury chip that could surely be reduced with some design revisions or adjustment of resistor placement. However, this would still increase the heat density...
Yes, the gap is purely for spreading heat. There only a few little components, and a few traces between the chips, so, electrically, the gap could be reduced to almost zero. It's the heat that is a concern. |
Happy with your c-scape product ? Consider a tip: 16X2FWVRz6UzPWsu4WjKBMJatR7UvyKzcy
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papaminer
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July 28, 2013, 05:08:32 PM |
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I really really really really hope...
you guys can meet your said deadline...
I am saving some money to get the 400GH on October...
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฿: 1L7dSte4Rs4KyyxRCgrqSWYtkXdAb4Gy1z MORE INFO ABOUT ME: BTC |
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benny32
Newbie
Offline
Activity: 16
Merit: 0
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July 28, 2013, 10:39:07 PM |
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That looks awesome, already been working to fund one of these myself By the way, this project would go nicely with Bitfury rigs for standard ATX power that takes care of both the boards and the Pi: https://bitcointalk.org/index.php?topic=263567.new#newI know this is still in a prototype stage, but are there any specs available as far as the physical aspects (Size, mounting holes, etc)? Like many I'm sure, I am wanting to start mapping out some kind of mounting system/case. I looked at that too for my enclosure but I don't think it will work because the hboard is using the GPIO pins and so do that little switching device. It was stated the cards will be mini-molex by Buzzdave on the next revision Victory! Missed that, I'll have to change the front panel on mine now! |
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buzzdave (OP)
VIP
Sr. Member
Offline
Activity: 472
Merit: 250
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July 28, 2013, 11:14:51 PM |
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FYI CC payments through the site are currently turned off. If you want to arrange payment, use the bank transfer payment method and note that you want to pay via CC. Kat can process your card outside the site. I expect to have a new payment integration done in the next couple days.
Cheers,
Dave
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Stack
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July 28, 2013, 11:25:42 PM |
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I really really really really hope...
you guys can meet your said deadline...
I am saving some money to get the 400GH on October...
Likewise, in the same boat |
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jspielberg
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July 28, 2013, 11:42:21 PM |
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I really really really really hope...
you guys can meet your said deadline...
I am saving some money to get the 400GH on October...
Likewise, in the same boat Just waiting for BTC to get high enough to push these from good deal to great deal. |
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Spotswood
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July 29, 2013, 01:27:15 AM |
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What is the size of the mounting holes on the m-board?
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EvilLizardApparel
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July 29, 2013, 10:50:29 PM |
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Thanks for posting the prototype pics. Made my day a bit better |
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