And these gen2 chips were pin compatible?
So now we can turn around and order 24GHash miners for 95 bucks a pop + chips?
It seems not, engineering required, new pcbs and at least a few (possibly minor) component changes. |
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They're not, Avalon released datasheet for them a while ago. And they are using different clock frequency and different voltages.
There's still a lot of components to rescue though perhaps? New PCB, a few resistors to set the voltage and a different oscillator? From glancing at it, it looked like the comms protocol was similar but I might be wrong. The real problem is that the rapid growth in the network makes anything like this too risky. It will be interesting to see what happens to this auction. |
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Rev 2 chips are being auctioned. I suspect SB might have been waiting for these announcements before offering refund options on assembly. We might hear something now that the options are clearer. We are pleased to announce the launch of our next auction. BitSyncom is auctioning their Avalon ASIC A3255-Q48 chips: the second generation SHA256 Processor. BitSyncom will be auctioning off 20 reels of 500 chips per reel. Each chip outputs 1.5-1.6 GH/s at a standard 0.9V, with 2.05W consumption. The minimum bid for a single reel will be 24 BTC. For more detailed information on the A3255-Q48 mining chip, please see Avalon’s Datasheet. This product has already cleared customs and is ready to ship upon the close of the auction. Bidders who have deposited bitcoin in their Tradehill Auction accounts may begin bidding as of Friday November 1, 2013, 1:00 PM EST. The auction will close on Tuesday November 5, 2013, 2:00 PM EST. All bidders that have submitted identity documents since the close of the prior auction should have received a response from Tradehill Auction Support either indicating that their account has been approved or detailing additional documentation needs. For support related to your auction account, please contact auctionsupport@tradehill.com. For questions related to product specifications or shipping details, please contact support@avalon-asic.com. |
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Chips are being auctioned. https://www.tradehill.com/auctionsWe are pleased to announce the launch of our next auction. BitSyncom is auctioning their Avalon ASIC A3255-Q48 chips: the second generation SHA256 Processor. BitSyncom will be auctioning off 20 reels of 500 chips per reel. Each chip outputs 1.5-1.6 GH/s at a standard 0.9V, with 2.05W consumption. The minimum bid for a single reel will be 24 BTC. For more detailed information on the A3255-Q48 mining chip, please see Avalon’s Datasheet. This product has already cleared customs and is ready to ship upon the close of the auction. Bidders who have deposited bitcoin in their Tradehill Auction accounts may begin bidding as of Friday November 1, 2013, 1:00 PM EST. The auction will close on Tuesday November 5, 2013, 2:00 PM EST. All bidders that have submitted identity documents since the close of the prior auction should have received a response from Tradehill Auction Support either indicating that their account has been approved or detailing additional documentation needs. For support related to your auction account, please contact auctionsupport@tradehill.com. For questions related to product specifications or shipping details, please contact support@avalon-asic.com. |
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It cost me 450€ to make 10 PCBs here (it's 4 layer btw with 0.5mm pitch components), so one board in this quantity is around 60USD locally. Doing for example one or two PCBs would be even more expensive, so that's the figure I based that on. And doing more than a few by hand is really not a good idea, as you can read in How to build. But I can ofc change that, just tell me what figure would be adequate. I would just call it very difficult, price varies so much all over the world it is a hard thing to be absolute about. |
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Nice job. Love the gallery especially the smoked hardware. Most of all I really appreciate whoever took the time to write the troubleshooting page. There's a level of detail there that is superb. "Much, much more. 100+ USD just for one bare PCB to be made" Not so sure about this. I can get 10 PCBs for $99 from http://imall.iteadstudio.com/open-pcb/pcb-prototyping/im120418009.html (yes, I've used them a lot, they make nice boards). Just had to embed this image here - "Pushed beyond limit  (taken by Kano)" 
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27A at 5V? Good luck finding a PSU to run that...  My 350 W Power Supplies are rated for 30 Amps on the 5 Volts Red. Strangely my 600 W Power Supplies only supply 25 Amps on the 5 Volts Red. Thats because most modern motherboards don't use 5v. They use the 12v and drop it to 1.8v or whatever the cpu/ram etc needs. |
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.03 a chip or best offer. 148 available.
Free shipping within U.S.
Offering .01 ea for 32 chips. Did you refund your assembly with ryepdx already? |
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Am interested if any buyers don't complete their sale.
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What is your current price?
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Offering 25@0.25, the rules don't seem to be working. |
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too large a fuse and there is no sense in having a fuse. Fuses are protection against bad things happening. Being conservative 49 BE's will pull around 27 Amps so I doubt a 10 Amp auto fuse will hold. Plus modern P/S's have over current protection as well. I guess I'll wait for Eleuthria to chime in before loading the thing full. 27A at 5V. 10A fuse at 12V power supply might just about run it OK, assuming near 100% power conversion efficiency. 15A on the 12V would certainly work. But the 49 Port USB Hub's pull from the 5 Volt line not the 12. Still think the 10-15 Amp is the correct way to go? Thanks, Sam Guys this is a safety thing be careful. You don't choose a fuse based on consumption, you choose it based on how much current the wire can carry. Can someone post a photo of this hub? I gotta see 49 ports to believe it. I guess it has an ATX power connector on the side, I can't see how else you'd get this kind of current into it. A single conductor would need to be about 10 gauge to carry 27A. |
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The pickit is really easy to use, pretty much plug and play.
Yep and someone could help out over screen sharing if needed. The problem might be the two weeks it takes to get a chinese pickit delivered, might need to buy a real one. |
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I'll give you 0.015 each for 32 shipped to 98230.
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Congrats, It so good that the end of the battle is almost won.
I would love to still build one of these, I have a pcb.
Would be great if someone with leftover components would sell some kits although not economical am sure.
I suspect the pic shortage is over. You should be able to upload the the bom to mouser and work through the parts selection to build yourself a kit... |
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Offer $US20 plus shipping to 98230.
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