>Even if it means higher power and equipment costs as well as limited cooling and case options?
Equipment is paid for already (existing GPU rig). Power consumption would not differ by much. Multiple power supplies to powered USB hubs might actually loose more power than an efficient 80+/90+ PSU.
>You can still use it to login to the web interface of a dedicated miner if you're that set on re-using your PC. Alternately just get a tablet + keyboard.
And buying a tablet for that is not expensive?
All you'd really be reusing is your motherboard/cpu, which you could do anyway with PCI-E USB cards. As for powered USB hubs - not an issue if you're serious about making back your money - BEusb's are highly unlikely to make ROI, anything else that runs over USB (other than the K1s) are externally powered so you can use your PC PSU for that. Basically the bus powered miners are pointless anyway at the prices they're going for! If it has ethernet you don't even need to worry about the PC. Also did you not notice that ATX PSU's also have 5v rails? Just make up a few molex to barrel jack adapters and you're sorted, could be as simple as running an electricians terminal block as an interconnect if you don't trust your soldering.  Until one of the USB-hub power supplies higher up in your USD daisy chain fails. A lot of unearthed power supplies = higher risk of fire.
>unless PCIE can provide higher efficiency if the mobo/cpu can assist/boost the performance vs running off USB. i dont think its worth it. remember we are dealing with cost vs profit, not buying designer bags just for looks and "cool" design.
It's not about design, but about reducing cost: it's about reusing existing equipment.
Design increases cost. Also for USB daisychains the 'hub' hubs not running miners don't need to be powered. USB also connects all of the grounds together anyway so this isn't too much of an issue - the previous hub just won't supply a hub attempting to draw several amp, even the most basic hub IC's have overcurrent cutoffs. The point about the tablet is that <£100 for a tablet which can be used to monitor thousands of standalone devices which have their own ethernet, and then you can sell your PC and monitor if it isn't being used for anything else. Also you no longer have the risk of a PC driver issue/virus/crash making all your mining cards fail. The cooling issue is more that the manufacturers would have to work out something for the single/dual slot in order for you to still get decent density. Also drivers would have to be written for the card itself - with USB its simple, not nearly so much for PCI-E. Ethernet is a much easier/cheaper standard and with the next gen of miners you might even be able to telnet/SSH to them! >no slot limit (virtually)
For a small miner 4-8 devices is anyway a reasonable financial limit.
They don't care for small miners' financial limits, the more scalable their product, the larger the quantities people will buy! |
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I have nothing against dedicated external miners, but I'd love to utilise the existing rig hardware as well.
Even if it means higher power and equipment costs as well as limited cooling and case options? You can still use it to login to the web interface of a dedicated miner if you're that set on re-using your PC. Alternately just get a tablet + keyboard. |
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By new plugs I meant either getting raw PCI-E plugs and crimping the wires in or getting something likle this and splicing the wires;  Although since you've got a modular PSU you could just write to the manufacturer and attach that photo, they should send you a new cable for free. |
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The power overhead on a raspberry pi + usb hub is so much less than a full PC.
Doesn't even need to be a pi, there are plenty of ARM devboards with multiple USB controllers and far more powerful CPUs! |
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It was in one of those articles about stuff the NSA does. If you can understand it it is in the MtGox source code.
omg insider trading wtf  Why is bitcoin price stuck around the same number and not increasing, how likely is it for bitcoin to steadily start going up again?
Bitcoin need more user now, and some marketing action like "PayPal is accepting Bitcoins" IMO Na, Paypal is busy working on irrelevant projects, like interplanetary payments: http://www.myfoxny.com/Story/22701675/paypal-looks-to-conquer-space-paymentsPretty sure bitcoin is better suited for this application also, lol. Depends if the latencies are too high, wouldn't want to try mining up there, even with the great solar power you could get. |
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Just wondering if you realise you've only heatsinked the LAN chip on your pi - the CPU is actually hiding under the RAM chip!
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I'm hard at work on a BFL design along with another Engineer doing FW/MCU, and it's going quite well (IMO). At the current time we are just pushing to get a small 4 chip board done to characterize the BFL chips and the DC/DC convertor, after which we will be building full mining boards. I expect to release more information early next week as the test board goes out to fab, but a few of the planned details of the prototype board are below. Some features might not make it to production depending on how testing goes, but it should be quite similar other than the number of chips. - 4 BFL ASICs
- LGA1155 HS mounting holes
- Circuitry for reading the on-die thermal diodes (if they work)
- External clock input
- 3 phase Intel VR11.1 compliant programmable power supply - comfortable at 60A
- ARM M3 MCU core
Samples are on order from BFL, so the hope is that development boards should be ready mid-July and test production boards by the end of the month, perhaps mid-August depending on results and how many revs are needed. Sounds promising! If you can sell these populated with the ASICs you'll make a killing. |
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The problem is IC's that even support 1x PCIe 1.0 are expensive compared to say an LPC1768, which has an Ethernet PHY and USB PHY and enough GPIO to communicate with 64 Avalon chips. This would require no PC in the event Ethernet is used.
Do you mean expensive as in requiring licensing? I thought PCB and controller cost would not be largely different be it USB or PCIe. Then again, I am a software guy, so I don't know what I am talking about. We'll see how the ASIC market pans out in the future. Many PCIe expansion cards for say audio or ethernet are not that expensive. Maybe some larger company will start producing ASICs at a more reasonable pricing level, spreading the cost over many units, once the dust around this initial ASIC craziness settles down. Yeah but consider the differences in speed; PCI-E 1x can transfer at 250MB/s whereas USB2 is 48MB/s, also I'd expect the latency/timing margins are much larger for USB caused by the differences between running an interconnect and an external bus. |
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710 Watt is measured at the wall (plug/input). PSU has about 80% efficiency which means that 4 Modules will consume about 757W (710*0.8/3*4) at OUTPUT. PSU is rated what it can supply in OUTPUT not what it consumes in input. If you measure 4 modules at Input (plug) you will see that they will consume about 757 +0.2*757 = 908W
So once again 850W rated PSU is fine
Just to be on safe side check what is max Amparage that 12V rail can provide. It has to be greater than 757/12=63Amps. Most modern PSU's will do that. Having 1000W psu with weak 12V rail < 63AMPS (just an example) will cause magic smoke to come out
In short watch PSU Output Wats + !!!!!12v Rail AMPS!!!!!
The AX860 is a 80+ platinum rated psu what means it has an efficiency of over 90% (94% @50% load and still 91% on 100% load) @ 230V (115V is a little worse) check it out: http://www.plugloadsolutions.com/80PlusPowerSupplies.aspx#So the estamined 950 @wall will be about 860 Watt output and thats exactly the limit  I think Corsair is a good psu so it might have some reserve BUT I wont run a psu 24/7 at its limit! When I calculate the output 710*0.92 = 653 output /3*4 I'll get 870 Watt with 4 modules maybe it would work for a while but its very risky or will you loshia give a guarantee for your YES promise??? You need to bear in mind that most PSU's don't/can't supply all their "rated power" on the 12v rail. Apparently though this one can, is this what you have? |
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I'm going to go out on a limb here and guess your cards are running too hot... What sort of case are you using ? Fan speeds ? VRAM speeds ? Scrypt or SHA256 hashing ? Need more info.
The rig shutting down is probably due to hitting a thermal limit.
The card running too hot shouldn't be melting the power connections! My best guess would be that not all the plugs were properly inserted and making contact with the pins. This would have caused more current to flow down the ones that were making contact, heating them up and then melting the connectors! You need new connectors for that and make sure all the connections are properly connected. Wow I think the word connection has now lost it's meaning; I've said it too many times! |
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There is a growing need for ASIC "accessories" too - at the moment mostly for USB Eruptor sticks, but very soon for the DIY Avalons (Klondikes), and in the longer term who knows, for BFL DIYs, etc.
Things that come to mind - USB hubs, powered and unpowered. USB fans. USB cables. Molex to PCI-e power converters. PCI-e power splitters. Dual SATA to single PCI-E power converters. PSU breakout boards and switches.
Thanks for the list. I've been trying to source some USB hubs from my manufacturers. It seems that no one has good powered USB hubs that can handle 8+ Erupters, so I think that's something I am going to hit really hard to source. I'll be looking into USB fans/cables and other USB accessories, as well as the PCIE power converters.. I just had a big conversation with a major provider of Molex-PCIE converters that does a lot of other work with SATA as well. The PSU breakout boards are interesting - I have to look into those more as to if they can be sourced easily. I have a friend that is an EE that is going to help with a few basic ideas we're working on, as well. @Billotronic - I will look into Raspberry Pi kits too. I've seen a few mining stores sell them, but not with SD cards imaged with Minepeon. Actually, that's a great idea, as I already have a source on SD cards among other things. Just gotta get the Pi's themselves and start imaging them. The SD card is the OS storage, you don't need pi's just the image on an SD and people will be ready to boot! The RPi's can be gotten easily on amazon. |
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Think you could've closed your torrents? You're showing the world you illegally download movies.
Good luck with that.
Oh no I'm sure someone is gonna hunt me down for that. Movies? I see one. I was in the process of shutting down, these windows persisted though. And whats wrong with imgur? Didn't know they blocked access from anywhere. |
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No, don't panic (although I'm assuming you did receive communication on you dvc address in the end? Recall you posting about it previously):
Currently ~block 95,188
Round 23 started block 85k and ended block 89k, Payments block 92k to 96k (i.e. currently paying out)
Round 24 started block 89k and ended block 93k, Payments block 96k to 100k (should start paying out about 3rd July)
Round 25 started block 93k and ends block 97k, Payments block 100k to 104k
Round 26 started block 97k and ends block 101k, Payments block 104k to 108k
etc
Nice one! Yeah I did have communication about confirming my address, thanks for checking. |
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Trouble with that is that overclocking often corrupts the SD card requiring a complete reinstall. Gonna be a bit of a pain if your miner goes down cause of this, mine is at 975 core/475 cache/500 mem with +0.15v Heat shouldn't be too much of an issue; it only gets to 64 degrees even with a little aluminium ramsink and a sealed plastic case (see top post on this page) after 3 days of LTC mining on the CPU. But I certainly won't run it this way for long! When I send it off to the datacentre it'll definitely be back to stock - not worth risking it; the performance is so low anyway, even 30% more is still really slow! |
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how many usb block erupters can the rasberry pi handle?
it has two usb connections, so can I hook up 2 x 10 port hubs to it?
i would assume that the hard limit would be 127 *2 USB devices? depending on whether the the two USB ports are separate controllers... the 2 ports are from a single bus... so its a maximum of 127 devices then... The 700Mhz ARMv6 will become the bottleneck before 127 USB devices I would have thought. |
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I haven't had a chance to write anything for round 25. Anybody know when round 25 ends? I hope the payout is better than round 24. 140,955 per share which was $13 per share came in where I predicted at less than $3 per hour.
I'm hesitant to even bother but it's good for the devcoins I do have to get more content out there so I'll try to put some effort into it. I wonder if we'll get lots of writers from emerging countries as $3 per hour is still really good money out there. Should be interesting.
So wait the previous round has been paid out? I got nothing and should have had at least 8 shares, ffs -.- |
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What about raising a bitcoin bounty on this guys head. Get him hunted down and beaten senseless, wouldnt be hard to find him as we have his home address  No we need someone to hunt you down and beat some sense into you. Maybe we could use the sense that you wanted to beat out of him. If you're sending money to these types of people you ain't gonna last long in the BTC game, unless you have a tonne of money to throw at anyone who asks this unconvincingly...  |
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The numbers doesn't quiet add up to me, I'm tired so excuse me if it's off and using rough math.
1 Avalon Chip does about 280 MH/s and uses about 1.9W.
To have a board do between 1.2TH/s and 1.9TH/s, you'd need between 4000 and 4500 Chips.
With that many chips required per board;
You not bought enough to do about 2 boards (you stated buying 10,000 Chips).
Which apparently each one would need in the region of 8000 Watts
This is you ignore the fact your suggesting you can fit that many chips on a board (or even a multi-layer boards), designed for a PCI-E slot.
So simply put, your numbers don't make sense.
If you sent money to this scam, you're a fool who deserved to be parted with it. If you can't do the basic math shown above; then gtfo of bitcoin before you bankrupt yourself... C'mon. It is like saying a rape victim deserved it because she was cute and/or dressed provocatively. There is a world of a difference between parting innumerate fools looking to get rich quick with their money, and raping someone. |
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This is hilarious - random number generator page for order confirmation! |
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I hope not I was going to buy 10x50Gh/s.
Do it. |
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