Xian01
Legendary
Offline
Activity: 1652
Merit: 1067
Christian Antkow
|
|
November 12, 2013, 01:57:54 AM |
|
Xian, turn down the voltage by turning the trimpots to the left on those cards
I'll try that. Thanks !
|
|
|
|
AMD FTW
Sr. Member
Offline
Activity: 317
Merit: 250
GET IN - Smart Ticket Protocol - Live in market!
|
|
November 12, 2013, 02:01:14 AM |
|
What's the login and the password?
|
|
|
|
Xian01
Legendary
Offline
Activity: 1652
Merit: 1067
Christian Antkow
|
|
November 12, 2013, 02:14:23 AM |
|
What's the login and the password?
user: pi pass: raspberry
|
|
|
|
frankenmint
Legendary
Offline
Activity: 1456
Merit: 1018
HoneybadgerOfMoney.com Weed4bitcoin.com
|
|
November 12, 2013, 02:19:37 AM |
|
I was seeming to get good hashrates relatively (like ~520 - 550 GH/s) Just got home see that my rate was around 385 with two dead cards (currently I have my miner restarting once an hour in case that happens...look like it didnt seem to help this last go round ) to restart my miner, in ssh type crontab -e */60 * * * * sudo /opt/bitfury/start-miner.sh
No offense, but this kit is wierd, awkward, lacking, whatever you want to call it. So far I've spent a lot of time: Taking all cards out and slowly adding them and running it for 30 minutes to see how high they go and to attempt to set them to around 30 GH. I tuned the majority of them to stay on, here is my up to the minutes stats from CAT: speed:13312 noncerate[GH/s]:473.076 (1.848/chip) hashrate[GH/s]:486.648 good:330 44 errors:595 spi-err:9 miso-err:6 jobs:369 cores:29% good:256 bad:0 off:0 (best [GH/s]:0.000) Tue Nov 12 02:10:12 2013 0: 832 31.267 32.005 2184 24 1 2 16 0 0 (1.954/chip) 30% 1: 832 19.843 22.460 1386 140 0 4 16 0 0 (1.240/chip) 20% 2: 832 26.700 28.158 1865 86 0 0 16 0 0 (1.669/chip) 26% 3: 832 32.098 33.178 2242 19 1 0 16 0 0 (2.006/chip) 30% 4: 832 34.789 34.816 2430 21 2 0 16 0 0 (2.174/chip) 33% 5: 832 34.231 34.394 2391 26 1 0 16 0 0 (2.139/chip) 32% 6: 832 29.735 30.229 2077 13 0 0 16 0 0 (1.858/chip) 29% 7: 832 28.461 29.384 1988 27 0 0 16 0 0 (1.779/chip) 28% 8: 832 33.028 33.104 2307 21 0 0 16 0 0 (2.064/chip) 32% 9: 832 24.653 25.927 1722 56 1 0 16 0 0 (1.541/chip) 25% A: 832 34.417 34.520 2404 23 0 0 16 0 0 (2.151/chip) 32% B: 832 32.298 32.755 2256 13 0 0 16 0 0 (2.019/chip) 31% C: 832 31.783 32.576 2220 27 0 0 16 0 0 (1.986/chip) 31% D: 832 26.156 27.301 1827 21 0 0 16 0 0 (1.635/chip) 26% E: 832 23.093 24.300 1613 66 1 0 16 0 0 (1.443/chip) 23% F: 832 30.523 31.540 2132 12 2 0 16 0 0 (1.908/chip) 31%
Not terrible but by no means any good by what Dave quoted earlier. (might have increased slightly because my main window shows 475 GH/s) Good job to the dumbass misguided helper who chose the smaller than atomic particle Potentiometers (something just a little bit bigger that wouldve been easier to catch with a screwdriver would have made all the difference to me) that are too small for anything. Smallest screwdriver I could find in frys barely seems to catch them most of the time. Extremely frustrating when trying to undervolt the cards for the sake of keeping them on. I have a SHIT-TON of heat sinks - The only thing I could think to do more now is to buy up another 32 tiny heat sinks to put onto the top and the back of the voltage regulator.
|
|
|
|
Xian01
Legendary
Offline
Activity: 1652
Merit: 1067
Christian Antkow
|
|
November 12, 2013, 02:23:57 AM |
|
Good job to the dumbass misguided helper who chose the smaller than atomic particle Potentiometers (something just a little bit bigger that wouldve been easier to catch with a screwdriver would have made all the difference to me) that are too small for anything. Smallest screwdriver I could find in frys barely seems to catch them most of the time. Extremely frustrating when trying to undervolt the cards for the sake of keeping them on.
No kidding Having a helluva time with the smallest screwdriver I could find from Fry's... Not even sure if I'm getting any movement.
|
|
|
|
mb300sd
Legendary
Offline
Activity: 1260
Merit: 1000
Drunk Posts
|
|
November 12, 2013, 02:31:49 AM |
|
Good job to the dumbass misguided helper who chose the smaller than atomic particle Potentiometers (something just a little bit bigger that wouldve been easier to catch with a screwdriver would have made all the difference to me) that are too small for anything. Smallest screwdriver I could find in frys barely seems to catch them most of the time. Extremely frustrating when trying to undervolt the cards for the sake of keeping them on.
No kidding Having a helluva time with the smallest screwdriver I could find from Fry's... Not even sure if I'm getting any movement. Get yourself a phone repair kit, the ones that came with my replacement screen fit perfectly.
|
1D7FJWRzeKa4SLmTznd3JpeNU13L1ErEco
|
|
|
xstr8guy
|
|
November 12, 2013, 02:41:51 AM |
|
Good job to the dumbass misguided helper who chose the smaller than atomic particle Potentiometers (something just a little bit bigger that wouldve been easier to catch with a screwdriver would have made all the difference to me) that are too small for anything. Smallest screwdriver I could find in frys barely seems to catch them most of the time. Extremely frustrating when trying to undervolt the cards for the sake of keeping them on.
No kidding Having a helluva time with the smallest screwdriver I could find from Fry's... Not even sure if I'm getting any movement. Get yourself a phone repair kit, the ones that came with my replacement screen fit perfectly. Or an eyeglass repair kit.
|
|
|
|
goxed
Legendary
Offline
Activity: 1946
Merit: 1006
Bitcoin / Crypto mining Hardware.
|
|
November 12, 2013, 02:47:42 AM |
|
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
|
Revewing Bitcoin / Crypto mining Hardware.
|
|
|
tom99
|
|
November 12, 2013, 02:50:47 AM |
|
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. by time you got pcb and chip price for Jan. 2014 like 5.00 per chip.
|
|
|
|
Xian01
Legendary
Offline
Activity: 1652
Merit: 1067
Christian Antkow
|
|
November 12, 2013, 02:51:02 AM |
|
Something definitely seems amiss with these kits. I received 32 H-Cards, and 2 M-Boards. 1 M-Board is DOA and have filled an RMA request with MBP. I've swapped out several H-Cards in slots that had their hash-rate go from full to zero, and even new sealed H-Cards start slowing down and approach 0 GHs in the same slots. Best I can tell, at least 2 H-Cards are completely DOA, and having sad-times getting a full M-Board hashing steady above 500. Fuck Will let it run for a few hours and see how things look a bit later... EDIT: Well, that went to zero quickly... Fuck. Eg: Swapped slot 1 and 2 for new H-Cards... speed:13568 noncerate[GH/s]:351.042 (1.371/chip) hashrate[GH/s]:367.538 good:24520 errors:8994 spi-err:60 miso-err:125 duplicates:111 jobs:262 cores:24% good:256 bad:0 off:0 (best[GH/s]:0.000) Tue Nov 12 02:52:05 2013 board-2 speed nrate hrate good errors spi-err miso-er duplic good bad off per chip good cores 0: 848 34.245 35.863 2392 120 0 0 0 16 0 0 (2.140/chip) 31% 1: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 8% speed down 2: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 8% 3: 848 35.391 36.687 2472 3 1 0 0 16 0 0 (2.212/chip) 33% 4: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 13% 5: 848 32.556 34.499 2274 124 0 0 0 16 0 0 (2.035/chip) 31% 6: 848 34.961 37.417 2442 138 1 0 0 16 0 0 (2.185/chip) 32% 7: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 10% 8: 848 34.145 36.846 2385 124 0 0 0 16 0 0 (2.134/chip) 31% 9: 848 34.474 35.937 2408 67 1 0 0 16 0 0 (2.155/chip) 32% A: 848 35.290 36.613 2465 47 1 0 0 16 0 0 (2.206/chip) 33% B: 848 37.767 36.656 2638 9 2 0 0 16 0 0 (2.360/chip) 34% C: 848 34.832 35.683 2433 14 0 0 0 16 0 0 (2.177/chip) 33% D: 848 35.691 36.201 2493 3 0 0 0 16 0 0 (2.231/chip) 33% E: 848 0.000 0.803 0 7788 0 0 6 16 0 0 (0.000/chip) 11% F: 848 1.689 4.334 118 557 54 125 105 16 0 0 (0.106/chip) 7%
|
|
|
|
sveetsnelda
|
|
November 12, 2013, 02:55:29 AM |
|
Xian, it's very possible that your cards aren't overheating but are actually shaking side to side and losing connectivity. That's what happened to me, anyways. These new 1x PCI-E edge connectors are horrible. I'll post a picture of what I ended up doing to fix it.
|
14u2rp4AqFtN5jkwK944nn741FnfF714m7
|
|
|
mb300sd
Legendary
Offline
Activity: 1260
Merit: 1000
Drunk Posts
|
|
November 12, 2013, 02:58:55 AM |
|
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
|
1D7FJWRzeKa4SLmTznd3JpeNU13L1ErEco
|
|
|
xstr8guy
|
|
November 12, 2013, 02:59:33 AM |
|
Xian, it's very possible that your cards aren't overheating but are actually shaking side to side and losing connectivity. That's what happened to me, anyways. These new 1x PCI-E edge connectors are horrible. I'll post a picture of what I ended up doing to fix it.
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.
|
|
|
|
sveetsnelda
|
|
November 12, 2013, 03:05:30 AM Last edit: November 12, 2013, 03:15:50 AM by sveetsnelda |
|
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.
|
14u2rp4AqFtN5jkwK944nn741FnfF714m7
|
|
|
tom99
|
|
November 12, 2013, 03:09:48 AM |
|
Something definitely seems amiss with these kits. I received 32 H-Cards, and 2 M-Boards. 1 M-Board is DOA and have filled an RMA request with MBP. I've swapped out several H-Cards in slots that had their hash-rate go from full to zero, and even new sealed H-Cards start slowing down and approach 0 GHs in the same slots. Best I can tell, at least 2 H-Cards are completely DOA, and having sad-times getting a full M-Board hashing steady above 500. Fuck Will let it run for a few hours and see how things look a bit later... EDIT: Well, that went to zero quickly... Fuck. Eg: Swapped slot 1 and 2 for new H-Cards... speed:13568 noncerate[GH/s]:351.042 (1.371/chip) hashrate[GH/s]:367.538 good:24520 errors:8994 spi-err:60 miso-err:125 duplicates:111 jobs:262 cores:24% good:256 bad:0 off:0 (best[GH/s]:0.000) Tue Nov 12 02:52:05 2013 board-2 speed nrate hrate good errors spi-err miso-er duplic good bad off per chip good cores 0: 848 34.245 35.863 2392 120 0 0 0 16 0 0 (2.140/chip) 31% 1: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 8% speed down 2: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 8% 3: 848 35.391 36.687 2472 3 1 0 0 16 0 0 (2.212/chip) 33% 4: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 13% 5: 848 32.556 34.499 2274 124 0 0 0 16 0 0 (2.035/chip) 31% 6: 848 34.961 37.417 2442 138 1 0 0 16 0 0 (2.185/chip) 32% 7: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 10% 8: 848 34.145 36.846 2385 124 0 0 0 16 0 0 (2.134/chip) 31% 9: 848 34.474 35.937 2408 67 1 0 0 16 0 0 (2.155/chip) 32% A: 848 35.290 36.613 2465 47 1 0 0 16 0 0 (2.206/chip) 33% B: 848 37.767 36.656 2638 9 2 0 0 16 0 0 (2.360/chip) 34% C: 848 34.832 35.683 2433 14 0 0 0 16 0 0 (2.177/chip) 33% D: 848 35.691 36.201 2493 3 0 0 0 16 0 0 (2.231/chip) 33% E: 848 0.000 0.803 0 7788 0 0 6 16 0 0 (0.000/chip) 11% F: 848 1.689 4.334 118 557 54 125 105 16 0 0 (0.106/chip) 7% look like your last Hboard very bad with i/o error F: 848 1.689 4.334 118 557 54 125 105 16 0 0 (0.106/chip) 7%
|
|
|
|
Xian01
Legendary
Offline
Activity: 1652
Merit: 1067
Christian Antkow
|
|
November 12, 2013, 03:17:33 AM |
|
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.
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): https://i.imgur.com/SfpNAa2l.jpg That is madness. I've removed the fans that were blowing on them, causing any movement, and hooked up fans onto the headers, and have fans resting on top of the H-Cards, blowing down and giving them more support... in theory... Cards in the same few slots still creeping towards 0. Looking for some guidance from Dave and crew, 'cause something isn't right with this batch EDIT: I give up... speed:13568 noncerate[GH/s]:136.723 (0.534/chip) hashrate[GH/s]:144.709 good:9550 errors:462 spi-err:3 miso-err:0 duplicates:0 jobs:289 cores:16% good:256 bad:0 off:0 (best[GH/s]:0.000) Tue Nov 12 03:18:20 2013 board-2 speed nrate hrate good errors spi-err miso-er duplic good bad off per chip good cores 0: 848 34.847 36.021 2434 50 1 0 0 16 0 0 (2.178/chip) 32% 1: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 7% speed down 2: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 8% 3: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 13% 4: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 9% 5: 848 31.955 34.394 2232 140 0 0 0 16 0 0 (1.997/chip) 31% 6: 848 35.262 37.438 2463 135 0 0 0 16 0 0 (2.204/chip) 33% 7: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 6% 8: 848 34.660 36.856 2421 137 2 0 0 16 0 0 (2.166/chip) 32% 9: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 15% A: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 12% B: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 17% C: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 14% D: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 13% E: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 7% F: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 13%
|
|
|
|
mb300sd
Legendary
Offline
Activity: 1260
Merit: 1000
Drunk Posts
|
|
November 12, 2013, 03:21:08 AM |
|
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.
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): https://i.imgur.com/SfpNAa2l.jpg That is madness. I've removed the fans that were blowing on them, causing any movement, and hooked up fans onto the headers, and have fans resting on top of the H-Cards, blowing down and giving them more support... in theory... Cards in the same few slots still creeping towards 0. Looking for some guidance from Dave and crew, 'cause something isn't right with this batch EDIT: I give up... Fuck my ass... speed:13568 noncerate[GH/s]:136.723 (0.534/chip) hashrate[GH/s]:144.709 good:9550 errors:462 spi-err:3 miso-err:0 duplicates:0 jobs:289 cores:16% good:256 bad:0 off:0 (best[GH/s]:0.000) Tue Nov 12 03:18:20 2013 board-2 speed nrate hrate good errors spi-err miso-er duplic good bad off per chip good cores 0: 848 34.847 36.021 2434 50 1 0 0 16 0 0 (2.178/chip) 32% 1: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 7% speed down 2: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 8% 3: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 13% 4: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 9% 5: 848 31.955 34.394 2232 140 0 0 0 16 0 0 (1.997/chip) 31% 6: 848 35.262 37.438 2463 135 0 0 0 16 0 0 (2.204/chip) 33% 7: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 6% 8: 848 34.660 36.856 2421 137 2 0 0 16 0 0 (2.166/chip) 32% 9: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 15% A: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 12% B: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 17% C: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 14% D: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 13% E: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 7% F: 848 0.000 0.000 0 0 0 0 0 16 0 0 (0.000/chip) 13%
I laid mine on its side, with a tower fan on its side blowing from the "top"
|
1D7FJWRzeKa4SLmTznd3JpeNU13L1ErEco
|
|
|
goxed
Legendary
Offline
Activity: 1946
Merit: 1006
Bitcoin / Crypto mining Hardware.
|
|
November 12, 2013, 03:21:25 AM |
|
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
|
Revewing Bitcoin / Crypto mining Hardware.
|
|
|
sveetsnelda
|
|
November 12, 2013, 03:22:03 AM |
|
That is madness. I've removed the fans that were blowing on them, causing any movement, and hooked up fans onto the headers, and have fans resting on top of the H-Cards, blowing down and giving them more support... in theory... Cards in the same few slots still creeping towards 0. Looking for some guidance from Dave and crew, 'cause something isn't right with this batch They're either overheating or losing connectivity (or a combination of both). It's possible that you got a bad h-card somewhere, but it's damn near impossible that you have SIX bad boards. Keep in mind that if a board loses connectivity, it'll generally take out additional boards that are next in the chain. If you want to help rule out the overheating, tune all of the chip clocks to 52 and see if they stay hashing (or stay hashing longer). If you have a voltmeter, it's easy to see if they overheat. The voltage will gradually creep up as the VRM heats up, and eventually it hits a point where the voltage moves up *quickly* and then nosedives when it shuts off.
|
14u2rp4AqFtN5jkwK944nn741FnfF714m7
|
|
|
AMD FTW
Sr. Member
Offline
Activity: 317
Merit: 250
GET IN - Smart Ticket Protocol - Live in market!
|
|
November 12, 2013, 03:22:40 AM |
|
What am I doing wrong here?
I downloaded putty.exe so I could ssh into my setup Then on my laptop I entered login (pi) and the password (raspberry)
I typed (I have almost no idea what this does, found it on Bitfury Miner Support) cd /opt/bitfury/chainminer sudo make clean sudo make sudo killall screen sudo /etc/rc.local
I typed the raspberry pi IP into my url and changed the default mining pool, along with my username and password. I hit start mining and the power goes up to 650 watts or so for a minute and then the system shuts down and it is not a cooling or power issue.
How do I get this to mine?
|
|
|
|
|