Sell all your hardware and switch to cloud mining, its much better. You can sell your gh at any time or buy more and it starts mining for you instantly. It pays into your account per block and you get paid in BTC, NMC, IXC and DVC. To start mining just click in my signature below  asshat...how are you allowed out of the noobie board? |
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why did you need the voltmeter then?
Used it to troubleshoot and identify the 3 h-cards I requested an RMA for. Took a voltmeter to all the cards in the second rig while testing 16 cards one-by-one. Also used the voltmeter to tune a couple Erupter Blades I have a while back. Seems like a good geek tool to have in any respectable tool-bag either way.^yup, +1 voltmeter is great for almost any sort of electronics troubleshooting - its the essential first aid kit for electrical issues, along with electrical tape |
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I would only pay for 1$.. don't forget you need a hub and many accessories for this to work..
thats why you havent bought any - they are worth more. the physical components to make the stick are probably $3-5 |
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what did you do to get them going at that speed?
anyone have a recommendation for a voltmeter?
Played a game of "musical h-cards" where I ran the rig for about 5 minutes, took note of which cards were faster than others, shutdown, moved the faster cards to the front, and slower cards to the back, restart, etc. Also, FANS FANS FANS ! Lots of airflow ! These guys really need to stay cool and ventilated. http://www.amazon.com/gp/product/B005EK3NRS/ is what I'm using to tune my gear. nice job. i think i can do that. why did you need the voltmeter then? check the voltage on the cards when running to determine how to best tune the trimpot. 0.78V is about as low as you should go, even without heatsinks 0.8-0.83V is good if you have reasonable airflow and no heatsinks 0.84-0.88V is good if you have reasonable airflow AND heatsinks 0.9V-0.95V if you have LOTS of airflow and heatsinks. might be hard to get this high if you have more than 8 cards in the rig due to the close proximity of eachother's heat |
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2 cards were running at 37-38GH. I sold a card (for more than i paid, but perhaps less than i couldve mined -_-) and have the remaining card stable at 40GH
Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly
Nice custom made casing, i believe it helps on reducing the heat?? Nice you could make it a little more beautigul  this is the newer configuration with risers and second fan (also, PSU is lit up) |
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I like this.
I wonder what chance it'll have of getting stuck in Canadian customs...
we will see - i placed 2 seperate orderes with different taobao agents. the power consumption kind of sucks, but the design looks really slick and a 1000W supply could run 3 easily |
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2@1BTC each.
figured someone needs to start the bidding at a reasonable price -_-
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*Facepalm* Someone please tell me they have a copy of the Vanilla V3 image, or that one of the older ones works? I was shipped a blank SD card.
And, yes, I did have the sense to plug it into a PC to try to back it up prior to inserting it in the Pi.
Edit: Bah, V2 won't fit on the card and GandalfG's image, while booted, isn't generating any hashes. I don't know if it's my rig or not, yet.
Login with ssh and check what chainminer is doing: sudo screen -r | grep -m1 Detached | cut -b2-7
You have the latest kit? I made an image the day I got my machine. I can send you the image. OK, I verified with two different multimeters: 12.1V out of the power supply, cards between .76 and .80 volts between the top of the inductor and the terminal ground. This does not seem to be a vdroop issue since this happens with all cards or just 1 at a time. I cranked the pot on one of the cards around about 100 degrees clockwise and got it up to about .81V, ran screen -r and found it was hashing with BFG to the default account at BTCGuild at about 4.5GH/s. Chainminer still seems to be holding itself. Yes, sir, I would appreciate the base image. 0.76v is fairly low voltage. 0.81-0.86v is a better taget for getting 28-35GH |
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^yup it just helps force the air to cross the heatsinks where its needed most |
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 2 cards were running at 37-38GH. I sold a card (for more than i paid, but perhaps less than i couldve mined -_-) and have the remaining card stable at 40GH Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly |
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So I ordered https://megabigpower.com/shop/index.php?route=product/product&product_id=61and finally received it in the mail to find that it's missing 2 x Ring terminal to Molex-Jr adapter cable I literally made a mess tearing up that box trying to find them. I contacted customer support and they told me that there was nothing they can do for me. I have NO reason to "scam" them out of some cables. I ordered a starter kit WITH cables. I can't help that they didn't ship me what they advertised. I just want my cables or a partial refund for the cost of acquiring new cables. What do I do next? If I paid with credit card, we would already be in disputes, but since I paid with Bitcoin... I have to post drama here. *sigh* your board should use PCI-e power connectors, the ring connectors were phased out after august Thanks man. So I just plug those in to power this bad boy up? So how about an apology to Dave and the others folks at MBP for your rant? They delivered exactly what you ordered. It's not their fault that you didn't know what you ordered.  Sorry they don't update their website. Sorry they don't send what I purchased. I took a screenshot early on... Just in case of any sort of arbitration. There is my apology. seriously? You're upset that they IMPROVED the hardware between the time that you ordered and the time they shipped your order? Why dont you ship back the 32+GHash card you received so that they can rectify the additional 25% hashrate you received? They can send you some crappy ring-connectors and 12ga wires in return. Anyone receiving these has access to the internet and can easily find the instruction manual. |
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$3 for the hashing it can do, plus whatever value the physical device has for parts or collectible.
i would say $10 is fair
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I think its gna be 1.99btc
resellers are putting it at 1.99BTC , despite the fact it could only ever mine about 2.00-2.25BTC |
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Whats going on with the total lack of new stock? I agreed to the 2.25BTC of store credit option for my august kit, and have not yet had any opportunity to use it for more hardware
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So I ordered https://megabigpower.com/shop/index.php?route=product/product&product_id=61and finally received it in the mail to find that it's missing 2 x Ring terminal to Molex-Jr adapter cable I literally made a mess tearing up that box trying to find them. I contacted customer support and they told me that there was nothing they can do for me. I have NO reason to "scam" them out of some cables. I ordered a starter kit WITH cables. I can't help that they didn't ship me what they advertised. I just want my cables or a partial refund for the cost of acquiring new cables. What do I do next? If I paid with credit card, we would already be in disputes, but since I paid with Bitcoin... I have to post drama here. *sigh* your board should use PCI-e power connectors, the ring connectors were phased out after august |
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Is it possible to use 1x-1x risers on these cards? I feel like they might be easier to cool if i could get them off the M-board
I would advise against it, as it may lead to cross-talk and potentially much higher error rates |
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Ive got an issue:
when i run my bitfury through a linksys router alongside my laptop, i frequently have issues with the laptop getting all sorts of DNS resolution errors or problems with resolving host. My asicminer USB will continue to operate normally, but internet access is f**ked.
This has happened with 2 different routers and i dont understand why - is the bitfury system hogging the resources or communications with the router? Attempts to fix the issue oten resolve the laptop internet and maintain the asicminer operation, but then require the bitfury to reboot in order to hash (despite the webUI being accessile)
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but i really don't know what i might be doing wrong. is it the hardware? is it he software? i really don't know.
Sounds to me your power supply is too weak. Go for at least 1000W and try again, or lower the voltage on all boards and try with your current power supply. how much power does this thing take? i went from 500w to 700w. i guess i'll try the 1000w this time at 400GH for the system - roughly 400W at 500GH - roughly 550W at 550GH - likely 600-650W at 600GH - could be as high as 700W (*values are very broad approximations based on some of the dispersed info and kill-a-watt tested rigs I've seen so far in the forums: +/-10% is likely*) remember this is power across the 12V rail(s). A 700W PSU may only provide 500W on the 12V PCI-E rail(s). If your cards are the new higher stock speeds (32-37GH/card), then its quite likely you are drawing at least 500W on the PCI-e cables. A 700W PSU is likely insufficient i just picked up a 1200w psu. with a total of 1050w to the 12v pci-e. that should be enough now. the only problem i'm having now it the fact that i can't get my last 3 hboards to hash. so far i got 13 to hash. but the last 3 just don't want to work. i'm thinking the two pci-e cables connected to the v3.0 mboards might not be enough power. i think i need to add additional power other then just from the two pci-e cables. i know the v3.0 boards can be powered through the 2 pci-e plugs, but is it possible that it isn't enough power. do you think i might need to also add some 12v and ground to the metal screws? can i use both pci-e plugs along with adding additional power to the metal screws? it might be worth using a multimeter to test the volatgae over the screws at the end of the board. If its not 12V +/- 0.2V, particularly if lower, power at those terminals may help, but i dont know for sure. |
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but i really don't know what i might be doing wrong. is it the hardware? is it he software? i really don't know.
Sounds to me your power supply is too weak. Go for at least 1000W and try again, or lower the voltage on all boards and try with your current power supply. how much power does this thing take? i went from 500w to 700w. i guess i'll try the 1000w this time at 400GH for the system - roughly 400W at 500GH - roughly 550W at 550GH - likely 600-650W at 600GH - could be as high as 700W (*values are very broad approximations based on some of the dispersed info and kill-a-watt tested rigs I've seen so far in the forums: +/-10% is likely*) remember this is power across the 12V rail(s). A 700W PSU may only provide 500W on the 12V PCI-E rail(s). If your cards are the new higher stock speeds (32-37GH/card), then its quite likely you are drawing at least 500W on the PCI-e cables. A 700W PSU is likely insufficient |
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Soooo... HashFast fedex'd me another H-board despite me e-mailing them a week ago telling them not to.
How to proceed
i assume you mean megabigpower/bitfury? ill buy your h-board for $400, shipped to toronto |
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