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1342
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Bitcoin / Hardware / Re: [Announcement] Avalon ASIC Batch #1 Ships
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on: February 09, 2013, 12:26:39 AM
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* When we can expect the rest of batch #1 to ship, including tracking numbers sent to customers.
No answer. I recall this post: ...the original plan is to assemble one and send one, of course this isn't working out, we currently have sent a batch of 53 to a different route, as it currently stands, this 53 has the biggest chance to make it out of the country, then we can attempt again if the news make it back to us before Feb 2. which is the deadline for getting things out of the country before CNY.
...
...we did originally promise to ship everything out before Feb...
So I guess those 53 did not make it out after all, and we'll be waiting until after CNY before we'll see ours shipped out? If that's how it is, I'm disappointed, but it's OK (with me). I do hope that you will post and let us know what to expect. |
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1344
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Bitcoin / Hardware / Re: Avalon Asic Design Discussion
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on: February 08, 2013, 06:49:51 PM
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This would not be proper airflow in a rack (and Avalon is designed to be racked). Strange, I have seen Server racks online with those kinds of configurations. (mostly 120mm fans) These fans you guys are looking at are crap. Server, rackmounts fans are substantial and HUGE. 120mm, but 2-3 inches thick with crazy high power motors. I have some 120mm fans that run on 48V, and they're rated to move 200CFM each. About 10 times what most 120mm fans will do. When I powered one up loose on a table, it blew with enough force to push itself across the table, and drew blood when it walked right off the table edge and I tried to catch it. They're loud as hell too, with a real high tone. I like Avalon's design where the air flows in a straight path in the front, across the fins, and out the back. I never liked the BFL and bASIC designs where the air is forced to make a right-angle turn. |
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1345
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Bitcoin / Hardware / Re: Avalon ASIC users thread
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on: February 08, 2013, 05:58:19 PM
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Another reliability update:
Now that difficulty is sufficiently high, no longer seeing machine or cgminer restarts.
The most common symptom now is a cessation of mining; cgminer and machine are both responding to status queries, but no work is occurring.
This symptom occurs every 24-48 hours.
A simple machine restart fixes the problem immediately.
Sure sounds like a memory leak. If you could check and record every hour or so, the free memory reported by 'free', and maybe capture which processes are using how much with 'ps axu', you may be able to find more definitive proof. For remote/automated restart capability, I like these: http://www.digital-loggers.com/lpc.html |
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1346
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Bitcoin / Hardware / Re: Long USB cable vs Wireless USB
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on: February 08, 2013, 05:47:56 PM
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I'm not sure what the details of the controlling software are but one of those Android mini-pcs can be had for $50. Built in wifi. If the control software could be ported to that, you'd be laughing since it could be powered from the USB hub.
At that point you may as well use a WR703N for $25. I believe you can run cgminer right on it, and connect back to the internets via wifi (or ethernet). With a USB hub you can connect multiple mining devices. You can also power the WR703N itself with the USB hub, assuming it's a powered hub. |
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1347
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Bitcoin / Hardware / Re: [Announcement] Avalon ASIC Batch #1 Ships
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on: February 07, 2013, 11:23:25 PM
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The silence is beginning to feel uneasy.
BitSyncom, or ngzhang, could one of you please answer:
* When we can expect the rest of batch #1 to ship, including tracking numbers sent to customers.
* When order confirmation emails for batch #2 will go out.
* When the rest of batch #2 will become available to order.
Thanks.
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1348
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Bitcoin / Hardware / Re: Long USB cable vs Wireless USB
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on: February 07, 2013, 07:30:40 PM
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I'd go with an active USB repeater cable, and then add a powered hub on the end.
I'm using a setup like that now for my HTPC with a 50ft cable, along with 50ft HDMI, and it's been working great for months now.
I got both the repeater cable and the hub from Newegg. Rosewill brand, both.
My friend tried the USB-over-cat5 solution and did not have good results.
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1351
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Bitcoin / Hardware / Re: What if your Avalon breaks?
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on: February 03, 2013, 10:53:34 PM
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So, what do you do, after (hopefully) receiving your Avalon unit, it (suddenly) stops working (properly)?
It seems like it has an ATX power supply, fans, an USB hub, 3 ASIC modules, and a ARM based controller.
If power supply, a fan or the USB hub break, no problem, go buy another, replace and you're back in business.
If an ASIC module fails, given the fact that the unit is modular and expandable, it has a good change to work with only 2 modules. Maybe Foundation (or Jeff) can help with a 15 minutes test, disconnecting one of the (hot glued) USB cables between USB hub and one of the modules? 44GH/s is better than nothing, until a replacement part arrives.
But what if controller fails? Disaster! Maybe there's a possibility to put the firmware (or part of it) on a wireless router (w/USB) with the same chipset? Any idea anybody?
It's just a WR703N with some custom firmware and an external antenna connector soldered in. If someone would be so kind as to rip the firmware from their Avalon and post it, I think I can use the openwrt toolchain to build from it a firmware bundle that can be flashed onto a factory WR703N. I'd be more worried about the DC-DC converters failing. No offense to ngzhang. |
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1353
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Bitcoin / Hardware / Re: [Avalon ASIC] Batch #2 pre-Sale Thread
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on: February 03, 2013, 05:50:13 PM
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Wheew, I don't know if they're officially sold out now like the website says, but I got one about a half our ago. It was an absolute NIGHTMARE because I lost my secure card, tried to print the thing, closed the webpage, it wouldn't let me see it again. I called tech support like mad to get it back, took long enough. Finally got the BTC transferred to walletbit, and then finally paid before refreshing and seeing them sold out.
I even just got off the phone with Chris at Walletbit, he said the Avalon transactions were up that day and running smoothly. So it's legit.
Yeah, that "secure card" thing is kinda annoying. When I first read about it being "installed in the browser" I thought it was a plug-in, but it's nothing more than a pop-up window with some HTML. They just make the link to it hard to find for some dumb reason. You have to first login to walletbit.com, then go to "Account", and click the blue "WalletBit Secure Card" button near the top of the main content pane. |
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1354
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Bitcoin / Hardware / Re: [ANN] Avalon ASIC Batch #2 Sales Update (Last Updated 2013-02-03 3:53 EST)
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on: February 03, 2013, 04:38:22 PM
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looks like they put the avalon back in stock but im getting token errors at walletbit :/
Woohoo! Order succcess! If you register for an Avalon Store (wordpress) account, and login, you can avoid the session/token issues. At least it worked for me. I'd make an account anyway for order tracking purposes. I also used a walletbit account, not "guest pay". https://i.imgur.com/SaUKje4.pngStill no email.  Why on earth does walletbit not have a transaction history? Edit: Oh, they do. If you scroll down on the "Dashboard" page. |
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1355
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Bitcoin / Hardware / Re: [ANN] Avalon ASIC Batch #2 Sales Update (Last Updated 2013-02-03 3:03 EST)
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on: February 03, 2013, 12:47:06 PM
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OP Updated with new information [Update 2013-02-03 3:03 EST]All orders which have paid the full and proper amount for each Avalon unit will be honored. This means if your order said 0.05BTC and you later paid the correct amount (~75BTC) that your order will be fulfilled. Please create a support ticket with Avalon to confirm your order details with them personally. The remaining Avalon units will be going on sale tomorrow. http://support.avalon-asic.com Yes, when exactly? Also, does "tomorrow" mean Sunday the 3rd or Monday the 4th? |
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1358
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Bitcoin / Hardware / Re: [ANN] Avalon ASIC Batch #2 Sales Update
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on: February 03, 2013, 04:11:20 AM
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What will the advantage be to pre-loading a Walletbit account with btc? Walletbit allows checkout by paying straight to an address.
Possibly better documentation? The paying straight to address page was atrocious, providing no information what-so-ever besides a price and an address. At least confirm you have my info before asking me to send funds. Common sense folks. That's exactly why I did not pay in full when I was shown the screen, and instead paid a placeholder amount, intending to pay the remainder after I received some kind of order confirmation (no email was sent). Now I've created a walletbit account and loaded 100 BTC into it, only to find that immediately now only 99.11 BTC remains of my funds. They had better have things working smoothly when batch #2 relaunches. |
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1360
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Bitcoin / Hardware / Re: Avalon ASIC users thread
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on: February 02, 2013, 09:43:22 PM
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DC Power supplies are marked by the DC wattage provided, not by the AC wattage consumed. There is nothing at all strange about a device marked "450W" pulling 600+ watts from the wall.
This is a 91% efficiency power supply. So even if that was "normal" 620W AC is ~565W DC. 565W DC > 400W DC. Also remember the 400W number comes from the product listing for the entire unit. It is "strange" for a company to have all the specs related to the entire unit except the power which just happens to be just the chip (not even the total DC wattage). Now for the module only listing putting a wattage of ~180W DC would be realistic. Still even if you take 620W AC remove the PSU inefficiency getting 565W DC then drop out 25W for the host and 3 5W fans = 540W not 400W. A single module by itself has to be pulling ~180W ea (3x180 = 540) not ~133W ea (3x133W=400W). So the 400W number is dishonest, there is no way or reason to spin that. The sad thing is first out the door @ 180W per module and 620W per unit is still impressive. It is dishonesty that isn't even needed. There is a second stage of DC-DC conversion where the 12V output from the ATX power supply is further reduced, adding another layer of loss. |
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