Guys how much would it cost per board to manufacture and assemble the H-boards in quantity of 100? I am thinking of getting it done in the USA, since H-boards are not available and only chips are available  +1 The PCB layout is simple enough, someone here made an 8-chip h-board and shared the design. They had it manufactured by oshpark.com Easy enough to hand solder. Hey do you have the link to the layout files? Thanks |
|
|
|
|
Guys I have a question about the H-board.
Where can I download the H-board layout file? I am trying to get one manufactured.
Thanks
|
|
|
|
|
Guys I have a question about the H-board.
Where can I download the H-board layout file? I am trying to get one manufactured.
Thanks
|
|
|
|
I also had problems with my BFSB old style M-board/H-boards, maybe this will help: https://bitcointalk.org/index.php?topic=250249.msg3454967#msg3454967It could be that your M-board has issues. I bought an extra M-board and am now using it too. None of my M-boards is filled with 16 H-boards. H-boards that didn't went over 25GH/s got the pencil mod applied and are now doing better. I have fans laying on top of the H-boards, blowing down. The fans keep the boards from wiggling. Good luck. It was impossible for me to run more than 13 H-boards on a old style v1 M-board. The 14th board will always report zero hash rates. I think it's an issue with the SPI clock signal. That is why new H-boards have 4 SPI channels. check line 121 of spidevc.cpp 121 chipspis[i]=int(1000000.0/(100.0+31.0*(i+1)))*1000;}
|
|
|
|
Ah ha! Now I know why random cards have dropped out. It's always happened when I've moved a fan or slightly adjusted the position of the M board, etc.
Yeah. I couldn't figure out why my rig did worse in the garage with a loud box fan blasting on it with near-freezing air temperatures (as opposed to inside the house with a less obnoxious fan setting). I finally narrowed it down to the boards wiggling around slightly. Sometimes I could get them in the right position and they'd run for hours and then randomly crap out. Here was my fix (just cut slits with a miter saw):  Look ma, no heatsinks:speed:13670 noncerate[GH/s]: 620.895 (2.425/chip) hashrate[GH/s]:629.412 good:43369 errors:455 spi-err:10 miso-err:0 duplicates:0 jobs:291 cores:78% good:254 bad:0 off:2 (best[GH/s]:626.034) Sun Nov 10 08:36:21 2013 board-2 speed nrate hrate good errors spi-err miso-er duplic good bad off per chip good cores
0: 863 38.426 39.309 2684 88 2 0 0 16 0 0 (2.402/chip) 77%
1: 862 39.399 39.456 2752 9 0 0 0 16 0 0 (2.462/chip) 80%
2: 809 34.388 36.444 2402 67 0 0 0 15 0 1 (2.149/chip) 71%
3: 863 38.898 39.752 2717 12 1 0 0 16 0 0 (2.431/chip) 80%
4: 859 39.313 39.900 2746 14 1 0 0 16 0 0 (2.457/chip) 79%
5: 863 41.905 40.482 2927 22 2 0 0 16 0 0 (2.619/chip) 81%
6: 861 38.640 40.831 2699 15 0 0 0 16 0 0 (2.415/chip) 80%
7: 862 40.487 39.932 2828 5 0 0 0 16 0 0 (2.530/chip) 80%
8: 863 39.786 39.425 2779 19 0 0 0 16 0 0 (2.487/chip) 79%
9: 859 40.659 39.805 2840 9 1 0 0 16 0 0 (2.541/chip) 80%
A: 863 40.630 40.101 2838 8 0 0 0 16 0 0 (2.539/chip) 80%
B: 861 39.256 39.594 2742 7 0 0 0 16 0 0 (2.454/chip) 80%
C: 855 38.469 39.161 2687 22 1 0 0 16 0 0 (2.404/chip) 79%
D: 809 34.775 37.438 2429 132 0 0 0 15 0 1 (2.173/chip) 69%
E: 858 37.209 38.717 2599 9 0 0 0 16 0 0 (2.326/chip) 79%
F: 860 38.655 39.065 2700 17 2 0 0 16 0 0 (2.416/chip) 78% Keep in mind that this was manually tuned and I have access to unlimited amounts of very cold air. Awesome man, cannot beat the cfm of a box fan. Just installed one for my setup.  |
|
|
|
Okay I want to brainstorm my ideas a little bit. Here's what I am going to do. I am thinking of decoupling the voltage regulator from the PCB since it causes so much overheating issues. It will reduce board BOM and hopefully faster turnaround by PCB manufacturer. I am planning to use multiples of this regulator since the output can be paralleled (~$55 e.a.) http://www.intersil.com/en/tools/reference-designs/isl8225meval3z.htmla) Order chips ($25 ea on megabigpower.com) b) Order decoupling capacitors for ASICs c) Get PCB made and assembled by the PCB company (only solder ASIC + decoupling caps. No need to solder voltage regulator section) d) Order Voltage regulators e) Test assembled cards f) Mine g) If successful, sell to interested parties  You'll have no margins for profit if chips are $25 ea. That's $400 for the ASICs alone. And I think it's generally expected when MGP and BFSB started selling H boards again they're going to have to price them at less than $300 per board or they'll generate very little interest. Lets say I do it without any profit margins, just for the community at first. BTW can I use this to hand solder the ASICs without much problems? http://www.cmlsupply.com/model-850-esd-safe-hot-air-rework-station.html?gclid=COTelKSe3roCFa1AMgod8VMAawLooks pretty similar to the one I have, I use it regularly to solder 0402s  So do you think it will be fine for soldering the Bitfury chips? Thanks |
|
|
|
Okay I want to brainstorm my ideas a little bit. Here's what I am going to do. I am thinking of decoupling the voltage regulator from the PCB since it causes so much overheating issues. It will reduce board BOM and hopefully faster turnaround by PCB manufacturer. I am planning to use multiples of this regulator since the output can be paralleled (~$55 e.a.) http://www.intersil.com/en/tools/reference-designs/isl8225meval3z.htmla) Order chips ($25 ea on megabigpower.com) b) Order decoupling capacitors for ASICs c) Get PCB made and assembled by the PCB company (only solder ASIC + decoupling caps. No need to solder voltage regulator section) d) Order Voltage regulators e) Test assembled cards f) Mine g) If successful, sell to interested parties |
|
|
|
Okay I want to brainstorm my ideas a little bit. Here's what I am going to do. I am thinking of decoupling the voltage regulator from the PCB since it causes so much overheating issues. It will reduce board BOM and hopefully faster turnaround by PCB manufacturer. I am planning to use multiples of this regulator since the output can be paralleled (~$55 e.a.) http://www.intersil.com/en/tools/reference-designs/isl8225meval3z.htmla) Order chips ($25 ea on megabigpower.com) b) Order decoupling capacitors for ASICs c) Get PCB made and assembled by the PCB company (only solder ASIC + decoupling caps. No need to solder voltage regulator section) d) Order Voltage regulators e) Test assembled cards f) Mine g) If successful, sell to interested parties You'll have no margins for profit if chips are $25 ea. That's $400 for the ASICs alone. And I think it's generally expected when MGP and BFSB started selling H boards again they're going to have to price them at less than $300 per board or they'll generate very little interest. Lets say I do it without any profit margins, just for the community at first. BTW can I use this to hand solder the ASICs without much problems? http://www.cmlsupply.com/model-850-esd-safe-hot-air-rework-station.html?gclid=COTelKSe3roCFa1AMgod8VMAaw |
|
|
|
Facebook has women. Bitcoin hasn't.  Bitcoin has money. If you have money, you will have women. First comes money, then honey |
|
|
|
Guys how much would it cost per board to manufacture and assemble the H-boards in quantity of 100? I am thinking of getting it done in the USA, since H-boards are not available and only chips are available We looked into it. I think we got quoted somewhere around $130 per board. Not including the chips... But If you can find a cheap manufacturer go for it. Aah okay, I will try to get some quotes and see where it stands. Thanks. |
|
|
|
Guys how much would it cost per board to manufacture and assemble the H-boards in quantity of 100? I am thinking of getting it done in the USA, since H-boards are not available and only chips are available +1 The PCB layout is simple enough, someone here made an 8-chip h-board and shared the design. They had it manufactured by oshpark.com Easy enough to hand solder. Okay I want to brainstorm my ideas a little bit. Here's what I am going to do. I am thinking of decoupling the voltage regulator from the PCB since it causes so much overheating issues. It will reduce board BOM and hopefully faster turnaround by PCB manufacturer. I am planning to use multiples of this regulator since the output can be paralleled (~$55 e.a.) http://www.intersil.com/en/tools/reference-designs/isl8225meval3z.htmla) Order chips ($25 ea on megabigpower.com) b) Order decoupling capacitors for ASICs c) Get PCB made and assembled by the PCB company (only solder ASIC + decoupling caps. No need to solder voltage regulator section) d) Order Voltage regulators e) Test assembled cards f) Mine g) If successful, sell to interested parties |
|
|
|
Guys how much would it cost per board to manufacture and assemble the H-boards in quantity of 100? I am thinking of getting it done in the USA, since H-boards are not available and only chips are available |
|
|
|
Guys how much would it cost per board to manufacture and assemble the H-boards in quantity of 100? I am thinking of getting it done in the USA, since H-boards are not available and only chips are available |
|
|
|
If you donot add heatsinks to the regulator area, cards will cycle. The real point of adding heatsinks to the ASIC is to keep the regulator cool. Add sinks to the regulator and atleast the bottom 2 rows of ASICS and reduce STRESS in your life . BTW, I also did another mod, but I will not advise anyone to do that unless they know what they are doing. It's obvious to the astute user if you look at my H-card very carefully.   |
|
|
|
|
If you buy BTC now you are participating in your own private placement plan. Each BTC is like one share in a strict 21Million float.
Usually only accredited investors get to participate, but with BTC, anyone around the world can invest in this technology.
There are many social media copies like Orkut, myspace, google +, etc. etc. but we already know which one got to be the most popular and why. We also know of atleast 3 VCs common between FB and BTC
|
|
|
|
|
200BTC is a good goal IMO.
|
|
|
|
All part of the experience |
|
|
|
This rise is beyond suspect. There is no real justification for this. I fear a major "pop" is in the works. Do you think pop back to 2011 winter levels? |
|
|
|
Those are not the Monarch chips. Those are resistors for electrical testing.
They don't actually have the silicon for these boards they are building.
Can you please point me to a datasheet of these test resistors? |
|
|
|
|
Show Posts
