Topic: [CLOSED] ASICMiner Prisma 1.4th/s - 1.47 BTC - page 13. (Read 49921 times)
Up and running CrazyGuy who knows what the problem was but all is well now. Thanks again for your time.
Where do we DL your fork of Minera?
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
So on Minera pool HR much lower 2/3 then device hashrate could this be from using wifi also 8% rejected due to duplicates 
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
So on Minera pool HR much lower 2/3 then device hashrate could this be from using wifi also 8% rejected due to duplicates
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
So on Minera pool HR much lower 2/3 then device hashrate could this be from using wifi also 8% rejected due to duplicates
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?
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.
http://www.ikea.com/us/en/catalog/products/10069763/ - better airflow underneath
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
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".
http://www.ikea.com/us/en/catalog/products/10069763/ - better airflow underneath
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?
That should work well, just put it over the top and grill your burgers while mining bitcoin. Warning: may leave a funny aftertaste.
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
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.
Well the first board seems to have failed. 3/19 showing all chips working but no hash. Reset the power a few times but ran out of time to check anything else yet.
Like this:
Temp is monitored by fan controller.
Nice and quiet.
Hey Phillipma i think this is what you were looking forTemp is monitored by fan controller.
Nice and quiet.
nice someone knew what I meant…thanks
I've received a photo of the adapter that has been created for connecting to a RPi. The interface is USB, so that's good news.
I will ship overseas, but I can not estimate a price as I don't have package dimensions. The weight will be somewhere around 8kg.
I will ship overseas, but I can not estimate a price as I don't have package dimensions. The weight will be somewhere around 8kg.
Hey CrazyGuy (or anyone else with a clue),
I assume (we both know what that means) the signals used are RX, TX, GND.
Looking at the picture, what are the left most and right most pins on the little white connector?
In a moment of weakness, I bought a CP2102 USB-UART adapter off of Amazon for ~$9 ( http://www.amazon.com/gp/product/B00CD264HG/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 ). Hang is it has 6 pins (fortunately they're labeled on the PCB) if I knew the pin out on that board I can jumper the correct pins on the one in hand.
This would give all concerned a second source for the USB-UART boards.
Thanks bro'
Like this:
Temp is monitored by fan controller.
Nice and quiet.
Hey Phillipma i think this is what you were looking for Temp is monitored by fan controller.
Nice and quiet.
The hot board has been unplugged as soon as I discovered it with the exception of testing after inspecting/reseating (with no burn marks or damage), and the inital burn in before I knew I had problems. The other problem boards are not seeing this same high temp but I have not tested every chip to confirm there isn't a hot one somewhere.
Out of 12 hashing boards (3 prisma), 8 are working without issue, 3 work ~20-60% of the time and not for long and have resetting issues, 1 obviously has temp issues.
Out of 12 hashing boards (3 prisma), 8 are working without issue, 3 work ~20-60% of the time and not for long and have resetting issues, 1 obviously has temp issues.
they may just be bad, but if I recall someone took the short tubes apart and used two fans one each board. kept heat much lower. let me see if I can find a post from aug
looked at this thread can't find the photo
https://bitcointalk.org/index.php?topic=735982.0;all
will check this one later
https://bitcointalksearch.org/topic/block-erupter-tube-sales-information-thread-round4-price-at-1btc-per-ths-735728
yes, hit refresh, last time it said 7 minutes? I will change to 230 to see if anything is different. I am using a 12v 6 amp adapter as told in the guide to use.
Can any of the Prisma gurus tell me if this output is expected for normal operations? I have been running the Primsa a few days now. But it shows "Running time" up only 20 minutes? Is my Prisma rebooting ever 20 minutes? Should I be concerned about this?
Im assuming you have hit the refresh on your browser or the wakeup buttonJump to: