twmz
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December 14, 2013, 04:15:32 AM |
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Here is a closeup look at my card a v2.2 version H-card. I don't see anything in that spot other than the trimpot. Is it the trimpot, itself that needs the heatsink? Or that tiny thing labeled R01F?
The voltage regulator that needs to be heatsinked? It's the dark gray integrated circuit in between C01R and the Pulse inductor. I attached mine to the back rather than the front, though. It is tricky either way because you do not want to accidentally short the other components. On the front, the thermal conductivity is not as good. On the back, the heat sink barely contacts the area where the regulator is attached due to live traces and components. So is it indeed the chip located above C01R that needs to stay cool ? For some-odd reason I thought it was C06 (SH 100 16V) that needed to stay cool. I guess it doesn't really matter as I have a hurricane blowing on those spots either way, but would be good to know... Thanks for the insight ! Guess it's off to EBay with me to buy a bag-o-heatsinks. Yeah the one above C01R is the one you want it gets pretty hot. Its a night and day difference for my cards, it runs with the heat sink in those locations and it will just plain shut down without them. Great. I'll start looking for tiny heat sinks... The VGA RAM heatsinks I have now are way too large for that tiny chip.
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Was I helpful? 1 TwmzX1wBxNF2qtAJRhdKmi2WyLZ5VHRs WoT, GPGBitrated user: ewal.
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Cablez
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I owe my soul to the Bitcoin code...
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December 14, 2013, 04:23:18 AM |
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Just take a hacksaw to them, tape side up. Aluminum or copper is real soft so an easy cut.
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Tired of substandard power distribution in your ASIC setup??? Chris' Custom Cablez will get you sorted out right! No job too hard so PM me for a quote Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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Asinine
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December 14, 2013, 11:29:19 PM |
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Most people I have seen are using VGA RAM heatsinks. You just have to get a little creative about mounting it without botching the job. I have also seen at least one person use a surface mount MOSFET heatsink for mounting on the front.
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klondike_bar
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ASIC Wannabe
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December 16, 2013, 12:12:03 AM |
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anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.
ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?
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goxed
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Bitcoin / Crypto mining Hardware.
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December 16, 2013, 12:15:48 AM |
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anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.
ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?
In my experience the following has worked for ~100 reboots between 3 SD cards and PIs. I stop the miner first using the web interface. Then turn off the PSU. I have not used the shutdown -h now OR poweroff command for a while. Each time the PIs have rebooted up fine.
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Revewing Bitcoin / Crypto mining Hardware.
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Ridicuss
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December 16, 2013, 12:25:18 AM |
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anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.
ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?
In my experience the following has worked for ~100 reboots between 3 SD cards and PIs. I stop the miner first using the web interface. Then turn off the PSU. I have not used the shutdown -h now OR poweroff command for a while. Each time the PIs have rebooted up fine. I am still shutting down the same way Goxed is but I am also still using shutdown -h. I was afraid of not shutting the RPI down. Guess I will get a new image ready myself, its about time for one.
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Man, I wish I could change my avatar!
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mb300sd
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Drunk Posts
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December 16, 2013, 12:45:34 AM |
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I think chainminer must write to the SD card and wear it out far faster than bfgminer. I've rebooted by pulling the AC probably 50 times now and have zero issues. It did suddenly stop running stably after being good for a few weeks though. Update to latest bfgminer git and swapping the h-cards around seems to have fixed it. I did have to disable the 50% frequency something reinitialization in bfgminer though, just commented the whole section out. Edit: Heres the diff from git that I'm using. Doesn't run stable without mods for me. http://pastebin.com/wAxjACVW
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1D7FJWRzeKa4SLmTznd3JpeNU13L1ErEco
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tom99
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December 16, 2013, 03:25:29 AM |
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anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.
ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?
yes, sudo reboot mess up my sd image too last week and sometime I did stop Bitfury admin then turn off psu work better than do reboot.
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Xian01
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Christian Antkow
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December 16, 2013, 03:30:53 AM |
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yes, sudo reboot mess up my sd image too last week and sometime I did stop Bitfury admin then turn off psu work better than do reboot.
sudo shutdown -r now works well.
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BenTuras
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December 16, 2013, 08:55:31 AM |
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anyone have advice for NOT ruining the SD card everytime the unit power cycles?
I log in as root or become root and then do # sync;halt or # sync;reboot I don't do anything on the web interface before either of the two above. Never had a problem.
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tom99
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December 16, 2013, 03:47:44 PM |
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Hello Dave, anything for for Boxing day sale?
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Doff
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December 16, 2013, 03:47:54 PM |
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anyone have advice for NOT ruining the SD card everytime the unit power cycles?
I log in as root or become root and then do # sync;halt or # sync;reboot I don't do anything on the web interface before either of the two above. Never had a problem. What is the default root password anyhow, I have looked everywhere for it however have seen no mention of it.
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tom99
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December 16, 2013, 04:29:48 PM |
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try sudo su as root and no password anyone have advice for NOT ruining the SD card everytime the unit power cycles?
I log in as root or become root and then do # sync;halt or # sync;reboot I don't do anything on the web interface before either of the two above. Never had a problem. What is the default root password anyhow, I have looked everywhere for it however have seen no mention of it.
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Doff
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December 17, 2013, 05:51:04 AM |
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I just figured it out and changed it with Sudo, no clue why sudo passwd root did not work for me before, I was totally confused as to why it did not but I must have just goofed it somehow. try sudo su as root and no password anyone have advice for NOT ruining the SD card everytime the unit power cycles?
I log in as root or become root and then do # sync;halt or # sync;reboot I don't do anything on the web interface before either of the two above. Never had a problem. What is the default root password anyhow, I have looked everywhere for it however have seen no mention of it.
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superduh
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December 17, 2013, 07:03:20 PM |
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dave's inventory isn't selling ! i guess there is a line between overly priced hardware and demand
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ok
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fractal02
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December 17, 2013, 08:02:07 PM |
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dave's inventory isn't selling ! i guess there is a line between overly priced hardware and demand
He don't care now he have his mine... If this H-card don't sell, they go directly to the mine... Greedy...
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davecoin
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December 17, 2013, 08:32:55 PM |
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dave's inventory isn't selling ! i guess there is a line between overly priced hardware and demand
He don't care now he have his mine... If this H-card don't sell, they go directly to the mine... Greedy... Or extremely generous depending where you're sitting investment-wise. https://bitcointalk.org/index.php?topic=140366.msg4011421#msg4011421The hardware available in the store is apparently separate from the 100TH+ mine hardware.
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Xian01
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Christian Antkow
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December 17, 2013, 08:40:10 PM |
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Or extremely generous depending where you're sitting investment-wise.
I'm interested in hearing your perspective how something that sold for $500, now selling for $999, is generous.
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Syke
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Merit: 1193
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December 17, 2013, 08:45:34 PM |
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He don't care now he have his mine... If this H-card don't sell, they go directly to the mine... Greedy... This isn't hardware pre-ordered by customers. They don't owe it to anyone. They took the risk funding the production themselves. They're more than welcome to sell it at whatever price they feel like. Obviously the price is too high, or they would fly off the shelves. It's a good product. It's a shame it's not going to new homes. But hey, that's keeps the difficulty from skyrocketing, so that's fine by me.
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Buy & Hold
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davecoin
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December 17, 2013, 08:46:58 PM |
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Or extremely generous depending where you're sitting investment-wise.
I'm interested in hearing your perspective how something that sold for $500, now selling for $999, is generous. I was simply saying that Dave isn't greedy. The new price of H-cards is absurd given the current USD/BTC exchange rate.
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