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Author Topic: [CLOSED] ASICMiner Prisma 1.4th/s - 1.47 BTC  (Read 48358 times)
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philipma1957
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A new tool for prediction https://bitvol.info/


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November 11, 2014, 12:04:25 AM
 #541

Ok, found a few minutes to look closer... I think I found the problem. I am really glad I put some scrap 10ga steel underneath these miners. This was the board facing down and it was running only 220MHz.






impressive>  


 I am going to use 2 fans and these

http://www.amazon.com/gp/product/B00008DHPC/ref=oh_aui_detailpage_o09_s01?ie=UTF8&psc=1



 
back in the day a 40 gridseed orb rack


Please support sidehack with his new miner project Send to : 1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
I mine alt coins with https://simplemining.net I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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DigitalPackrat
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November 11, 2014, 12:09:23 AM
 #542

That should work well, just put it over the top and grill your burgers while mining bitcoin. Warning: may leave a funny aftertaste.
philipma1957
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November 11, 2014, 12:12:43 AM
 #543

That should work well, just put it over the top and grill your burgers while mining bitcoin. Warning: may leave a funny aftertaste.

like that one pretty good.

btw I think that steel trapped the heat.  did you have 3 units and the middle bottom burn?

Please support sidehack with his new miner project Send to : 1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
I mine alt coins with https://simplemining.net I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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November 11, 2014, 12:15:21 AM
 #544

http://www.ikea.com/us/en/catalog/products/10069763/ - better airflow underneath
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November 11, 2014, 12:15:48 AM
 #545

2 units side by side with a few inches inbetween, they were just sitting on the steel like they would on a table. I also had the air outlet side raised about 3-4".
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November 11, 2014, 12:46:29 AM
 #546


Would it be better to use the above shelves, a box fan, and take apart the boards to lay them flat on the shelf?  This would allow for better cooling?

Box Fan http://www.amazon.com/Lasko-3733-20-Fan-Box/dp/B00002ND67/ref=sr_1_4?ie=UTF8&qid=1415666405&sr=8-4&keywords=box+fan  Rated for ~2,000 CFM
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November 11, 2014, 12:52:53 AM
 #547

Oh man, how/why did this happen?


Ok, found a few minutes to look closer... I think I found the problem. I am really glad I put some scrap 10ga steel underneath these miners. This was the board facing down and it was running only 220MHz.




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November 11, 2014, 01:28:29 AM
 #548

I will forward to ASICMINER for comment. My guess would be a short maybe around that capacitor that looks to have blown up. It looks like the one below that is completely missing. Was there any damage during shipment or loose caps in the shipping box?


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wasikidding
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November 11, 2014, 01:45:00 AM
 #549

So on Minera pool HR much lower 2/3 then device hashrate could this be from using wifi also 8% rejected due to duplicates  Shocked Shocked

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November 11, 2014, 01:56:42 AM
 #550

So on Minera pool HR much lower 2/3 then device hashrate could this be from using wifi also 8% rejected due to duplicates  Shocked Shocked


No, it's just the way pool hasrate was being calculated. I put a fix out on github last night. cd to /var/www/minera and run the following commands to update:

git fetch --all
git reset --hard origin/master


edit:
/var/www/minera not /var/www

ASICPuppy.net ASIC Mining Hardware and Accessories - 2Pacs in stock!
ManeBjorn
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November 11, 2014, 02:32:16 AM
 #551

Where do we DL your fork of Minera?


So on Minera pool HR much lower 2/3 then device hashrate could this be from using wifi also 8% rejected due to duplicates  Shocked Shocked


No, it's just the way pool hasrate was being calculated. I put a fix out on github last night. cd to /var/www/minera and run the following commands to update:

git fetch --all
git reset --hard origin/master


edit:
/var/www/minera not /var/www

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November 11, 2014, 02:34:21 AM
 #552

Up and running CrazyGuy  who knows what the problem was but all is well now. Thanks again for your time.
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November 11, 2014, 02:35:31 AM
 #553

Where do we DL your fork of Minera?


https://github.com/crazybitcoinguy/minera

Follow the Manual installation instructions for now. I'm also going to create a compact image and upload for my group buy participants later tonight.

ASICPuppy.net ASIC Mining Hardware and Accessories - 2Pacs in stock!
ManeBjorn
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November 11, 2014, 02:48:58 AM
 #554

Thanks.
I will follow them.

Where do we DL your fork of Minera?


https://github.com/crazybitcoinguy/minera

Follow the Manual installation instructions for now. I'm also going to create a compact image and upload for my group buy participants later tonight.

CrazyGuy
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November 11, 2014, 02:54:52 AM
 #555

Just over 20 straight hours on my RPi with a 3 board prisma. No hiccups.


ASICPuppy.net ASIC Mining Hardware and Accessories - 2Pacs in stock!
wasikidding
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November 11, 2014, 04:02:44 AM
 #556

so thanks for the update to fix poolside hashrate reporting in minera also i found a fix for the bet0 errors I tend to get them after a restart or making changes to pool info etc and restarting minera or miner doesn't solve them most of the time but if i load rockminer fork then go back to asisminer fork it comes up fine no errors   Kiss Kiss


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xzempt
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November 11, 2014, 04:38:54 AM
 #557

Minera looks sweet Smiley
ManeBjorn
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November 11, 2014, 04:49:39 AM
 #558

I think I will wait for your full image tonight I keep messing up the manual compile somehow.
This looks great by the way I cannot wait to try it. 
You rock dude.


Just over 20 straight hours on my RPi with a 3 board prisma. No hiccups.



LordPaco
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November 11, 2014, 05:01:22 AM
 #559

Anxious to try your image CrazyGuy I'm hoping it will sort out these seemingly random power down issues on problem boards. I think one of my hashing boards would end up like the burnt one above with several transistors breaking 100C even without load. I think that's where it started with one of the transistors completely burnt off and damage downhill. The heat damage stops with the other side/half of the hashing board.

Has anyone tried to use these usb adapters to connect to PC and just use cgminer? Safe to assume to dip switch them 1-4 and 2x per raspi?

Xtra7973
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November 11, 2014, 05:39:45 AM
 #560

I really like that minera interface. I have been up and running for a day and a half using the BE controller and bfgminer 4.10 as a proxy to run the pool of my choice without any problems besides user error setting it up after moving it. Thanks CrazyGuy for fixing my user error. I have two fans per unit on a fan controller and also a box fan pushing air up from under them after I looked at those pictures of that burnt board. I would love to try minera and turn off the setup I have going with bfgminer as a proxy, although working well, very well to be honest, id like to use this RPI and give my main pc a break. Have the USB to uart adapters shipped out yet?
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