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What are your predictions for short term (weekly, or even daily/hourly) high speed trading? Is that all all even possible? No one can predict the volatility of BTC 14 months from now based on any past history alone. To give you an idea, running the bot with the "low-frequency" default (31421% profit, 131 trades), a 10 BTC starting amount and a flat 0.6% trading fee + 0.28% slippage correction (so 0.88% in total) would have yielded the following trades over the past 14 months: |
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Alright, things are actually moving! This is better than expected for such a shady auction.  AWB Number:
Pickup Date: 2013-10-17 21:21:00
Service: P
Pieces:
Cust. Ref:
Description: CUSTOM HARDWARE
________________________________________
Ship From:
BEIJING FEI XIANG HENG DA
NO.75 BALIZHUANG
CHAOYANG DIST
BEIJING, 100025
CN
EVENT CATEGORY
18 Oct 13 1:51 PM - Shipment picked up - BEIJING & SURROUNDING AREA,CHINA, PEOPLES REPUBLIC
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Just wanted to share an image with a variety of ASIC hardware "Test Site 5"  Nice setup. Do you have free power?  |
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I got my tracking notice a few minutes ago as well.
Thursday, October 17, 2013 Location Time
1 Shipment information received BEIJING & SURROUNDING AREA - CHINA, PEOPLES REPUBLIC 21:21
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Yes, assume each BE will draw 2A with Overclock. Wire as many as you can in parallel to your power source, but not to exceed the Output Current Max of the PSU. You can cut open a USB cable and wire the data lines and GND to the BE as well. Just make sure to leave off the 5VDC wire so you do not backfeed into your hub/computer. You should quadruple check your connections before powering up, and then measure your voltages before connecting the USB to the hub/PC.
2A with overclock. the normal unit is 500mA. that is a big spike. I was thinking of using non powered hubs and connecting power to the back as a direct connect. Your thoughts on this are of course appreciated. So that means 2 BE per power adapter that I have. not a big deal till I run out of power adapters then I need to get more creative. let me know Here is a 30A 5VDC Power Supply pretty cheap. You can also use a computer power supply too. Digikey, 237-1306-ND |
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i was told mine was successfull, clearing price of 2.21btc. these are good if you have no power cost.... I second that! |
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My first overclocked BE, using scrounge parts - that's a 16.2MHz oscillator I found on some 20+ year old not-sure-what-it-used-to-be in a miscellaneous box.  My current little garden of OC'd BEs - this collectively converges on just shy of 6GH. It's powered off the 5V rail of an old 350W ATX supply. I didn't notice any overall increase in reliability from adding the chip heatsinks - HW errors didn't decrease. Got a few more coming in but I probably won't overclock them until I get another hub - or start removing the chip heatsinks.  I beefed up the hub rails and capacitors but was still having power delivery issues, so I wired all the hot pins straight to the 5V input. I don't trust barrel connectors for high current, so I'd also already hardwired the hub boards to power supply connectors.  Love it |
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Anything over 6-7kw is a lot for even a house. I am not sure if your house will be able to handle 8600 watts in the circuits.
Confirmed, my 6kw heater needed special three-phase installation just for it self, with enhanced fuses on each phase. I suggest anyone ordered that amount of Avalons call's an electrician before plugging all that in the wall, otherwise some interesting side-effects may occur  Yep, I take 2 legs off a 3-phase bus at work, running though independent AB breakers  |
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Here is some good basic knowledge to know that might help in your tinkering: "A lot of this information was collected from mjgraham, bluestreak66, and trillium on this forum. So thanks " - 1) ASIC Clock Speed = (Xtal) * 28
- 2) Stock ASIC Clock Speed= (12Mhz*28=336Mhz)
- 3) Stock Xtal is 3.3V@12Mhz, 5mmX3.2mm, 4Lead, Tri-State/Open Type
- 4) ASIC Chip MAX Voltage is 1.8VDC
- 5) Regulator (AZ1021) Output = 1VDC @ 2.5A, (3A MAX @ 100% LOAD)
- 6) V=0.8(1+(RA/R2)) Stock R2 Value is 2.4kOhms
- 2) Stock ASIC Clock Speed= (12Mhz*28=336Mhz)
Here is also some additional information that I have collected: - 1) Adding a 10uF capacitor across the input 5VDC may help clean up power/stability.
- 2) The higher the frequency of the clock, the more voltage required to stabilize them.
- 3) Current draw increases with frequency, NOT voltage.
- 4) For high clocks, it is necessary to replace the regulator with an external high amp buck converter that is adjustable from (1.05V-x).
- 5) Add the following to cgminer: "cgminer (--icarus-timing short=90)"
Here mjgraham's table for reference:  |
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Now a new problem, how to run 8600W of Avalons... thank goodness its winter!
Long, long time ago I used 6000W electric heater to successfully heat 3-room apartment in continental climate. Good luck with cooling all that equipment. Easy, crack a window You can vent the hot air back into your HVAC return register to brings some free warm air into the house. You can get a 300CFM inline 6" duct blower on eBay for less than $100. We used to do this to some of the network racks at my old job years ago. (small office) |
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and the question remains, do they come with a PSU?
Why would they not? THEY BETTER ITS IN THE PICTURE and it was never mentioned as "not included" right? I automatically assumed there was NO power supply, especially for 2BTC. I am happy getting a few for 2.3 and I have a box of PSU's left over from my GPU days |
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The only place left for Avalon gen 2 is if they sell it at such a bargain that 1-2 month positive ROI is pretty much guaranteed no matter what happens to diff, or just sell them dirt cheap to people who got screwed by their delays as compensation.
I see the latter happening ... |
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With those giant heatsinks, why don't you overclock them to something higher than factory clock? Maybe dial it up past 18Mhz and see if you can get past 600MH. You may need to supply external 5VDC 2A Power Source for each unit (bypassing the USB connector).
My plan was to increase Oscillator to 16.384 and the resistor to 1.4k. I have a bunch of 5V 4A power supplies that I was thinking of wiring parallel to these. at 4 amps I should be able to do 2 or 3 each. For me it is more than fun. See I really did not have anything into these 7 BE's so for me the BEP has already passed. When I start dipping into my own pockets (the joint account with the wife) is when I need to track that. I have hopes soon of getting a larger device 20Ghs or so. I see them for around 200.00 and that is what I have in mind. The staples was more to prove that they worked however I still need to get a temperature sensor on these some how. (need to get one first) Other plans are to incorporate an alienware watercooler (its manufactured by asutek and are great) I have what I think I need to mount them to a block to keep them cool and I can go from there. I just wish I had a USB hub that worked at the moment. All mine are running of computer ports ;/. I guess I am picky all the hubs I see look cheap and or the ports are too close together for me to use my heatsinks or the plugs are facing the wrong direction. More later about to place my order with Digikey and Newark. You can just take apart any USB hub and wire directly to the BE's. Leave off the 5VDC wire from the USB Hub and Power all the BE from an external supply that can provide enough amps. so running in parallel for power to the back of the BE will work. its not in line power right. I think doing inline will reduced voltage as opposed to amps. Sorry I never took any electronics classes. OHHH I should get some pins to mount to the BE so I can make it a neat connection. Yes, assume each BE will draw 2A with Overclock. Wire as many as you can in parallel to your power source, but not to exceed the Output Current Max of the PSU. You can cut open a USB cable and wire the data lines and GND to the BE as well. Just make sure to leave off the 5VDC wire so you do not backfeed into your hub/computer. You should quadruple check your connections before powering up, and then measure your voltages before connecting the USB to the hub/PC. |
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Has there been any confirmation that the Gen II chips will be compatible with the original footprint?
Which Gen II chips? I don't believe Yifu is able to produce anything worth buying in the 28nm era. Even if he does accomplish that, nobody will preorder anything from him, ever. He maybe alive and well, but business-wise he is dead. Here is the spec for the A3255 chip: https://github.com/BitSyncom/avalon-ref/blob/master/SPEC/A3255Q48-130929-V03-EN.pdf |
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With those giant heatsinks, why don't you overclock them to something higher than factory clock? Maybe dial it up past 18Mhz and see if you can get past 600MH. You may need to supply external 5VDC 2A Power Source for each unit (bypassing the USB connector).
My plan was to increase Oscillator to 16.384 and the resistor to 1.4k. I have a bunch of 5V 4A power supplies that I was thinking of wiring parallel to these. at 4 amps I should be able to do 2 or 3 each. For me it is more than fun. See I really did not have anything into these 7 BE's so for me the BEP has already passed. When I start dipping into my own pockets (the joint account with the wife) is when I need to track that. I have hopes soon of getting a larger device 20Ghs or so. I see them for around 200.00 and that is what I have in mind. The staples was more to prove that they worked however I still need to get a temperature sensor on these some how. (need to get one first) Other plans are to incorporate an alienware watercooler (its manufactured by asutek and are great) I have what I think I need to mount them to a block to keep them cool and I can go from there. I just wish I had a USB hub that worked at the moment. All mine are running of computer ports ;/. I guess I am picky all the hubs I see look cheap and or the ports are too close together for me to use my heatsinks or the plugs are facing the wrong direction. More later about to place my order with Digikey and Newark. You can just take apart any USB hub and wire directly to the BE's. Leave off the 5VDC wire from the USB Hub and Power all the BE from an external supply that can provide enough amps. |
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can i use 2 original avalon power supply 750W for power one avalon 4 modules. if yes i need to buy only 2 power supply 1000W
I tried asking about this aswell. Seems like a few is able to do that. However, it seems as some PUS's shorts GROUND with 12v when they are powered off. So should one fail, it might for sure burn the entire unit (i have no idea if this "functionality" can be disabled easily).. It would be optimal for me aswell, to be able to use 2 cheap psu's instead of one incredible expensive one to add another module to the units. thanks and problem resolv. for security i buy 3 AKASA PC Venom Power 1000 W (AK-PA100AM01-EU) just receive my new power supply but wont work. when i start power supply i have a green and yellow led and some second later a green and red led in the avalon how to resolv this Are you sure you have ALL the proper cables connected into the PSU board in the unit? If not, you can be causing damage. Post a picture if possible of the wiring and the lights. |
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Its got to the point where it is costing him more to store them than it costs to send them around the world which is more than they're worth in purchase price to us. How sad  So what happened previously with this YIFU guy? He held back all the chip shipments until they were worthless and then didn't refund the buyers money or offer a discount on Gen II chips? Meanwhile, Avalon developers were stuck with bare PCB's? He offered refunds on ALL chips, including non delayed chips. Buyers took him up on that, leaving avalon developers with bare PCBs. That's messed up. Has there been any confirmation that the Gen II chips will be compatible with the original footprint? |
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Its got to the point where it is costing him more to store them than it costs to send them around the world which is more than they're worth in purchase price to us. How sad So what happened previously with this YIFU guy? He held back all the chip shipments until they were worthless and then didn't refund the buyers money or offer a discount on Gen II chips? Meanwhile, Avalon developers were stuck with bare PCB's? |
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With the auction ending at 12PM EST, here are the current bids:  |
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