Near as we can tell, we had a run of bad luck. We are looking at it more, but don't see that anything is (or was) wrong. Now there are a bunch of new blocks maturing, with no changes on our side...this will get worse as difficulty rises and variance becomes more apparent. We are planning to create a private pool so that we can pay out the 500TH shareholders on a more regular basis. Not sure when that will be ready, but we've got most of the work done.
As to the question of whether we will expand - it has been stated many times, very clearly that this was a fixed size project. Initially it was 100TH, but Tytus expanded it 5x to try to give a good return to investors. For early investors, the mine has hit ROI weeks ago. For investors who would buy shares now, I'd have to say compare our price/GH to that of cex.io and make your own decision. Comparatively I think we have a good price/GH for leased hashpower.
Dave
Sadly I'm not surprised. I sold off my holdings a week ago when it was becomng clear there was no continued growth from 1GH/share. still half the price of CEX.io, but 2x the price of a mining machine like the antminer |
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I was going to buy a bunch of these, but at $42.50 each, even with power supply for $12 that's more than $52 then I have to buy cables and such and put it all together. I can get a power supply with cables ready to go for $50 http://www.outletpc.com/zk2737-sdgr-750e-solid-gear-750w-power-supply.htmlSo it does not make any sense unless you have these PSUs laying around and you want to make good use of them. At $25 each I'd take a bunch, at $42.50 I'd buy one. Not a bad PSU if its a single 12V rail - but server PSUs can be very cheap to modify yourself - Ive been able to get 800-1000W ones for $5 each, plus maybe $5 of 14AWG wire and an 30-45 min to wire it up depending how tricky it is to achieve the PS-ON function. (add in a one-time cost for solder and a 100W soldering gun) |
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I have a problem - a second DPS-800GB A that was powering a single antminer just died. wont start up - just clicks and seems to spin the fan but no DC power output. In comparison i have an identical HP supply ( ATSN-7001044-Y000) running 2 antminers without any trouble. Is this an issue with the older supply?
I swapped in a DPS-670CB A and after a few hours that failed and seems like it intermittently switched on and off for about 10minutes at a time until I found it with the warning LED lit and not providing power. Unplugging and replugging has the miner running again. At 375MHz I dont beleive that the miner can be using anything over 500W (<75% of the rated power). Is this something to be concerned about in terms of either the particular antminer or the 670W server PSU?
edit: the psu is pushing only 11.82V - probably that is the issue, considering I have a second identical suply that only provides 11.24V and makes a strange 'clickering' noise (as in a randomized clicking similar to a bulb that is flickering) somewhere near the 120V side of the board
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Becouse it seems that chips will be created faster than creating new ones by tytus.
And in meantime we mined only one block a day. Prices per share fall down to 0.023
the real concern IMO is that the mine makes no promise to expand. They have expanded in the past very successfully but that does not reveal the future. It may just be that they follow the path of CEX.io from here |
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Hi there, just copying a post I placed in another thread as I think it's also relevant here: I must say I'm divided on the psu issue now that I've had a chance to test a little... Bought my first miner with the red & black 12V connectors on the boards and ran it off an Antec Neo Eco 520C 80+ bronze which has a single 12V rail delivering 480W at 40A and got mad hardware errors at 400mhz so clocked it down thinking it was the power supply. I then bought an Antec 750W High Current Pro 80+ Gold which has 4 12V rails delivering 744W at 40A per rail and the hardware errors were only slightly reduced but it was still not worth running at 400mhz. So, I bought a second miner now with the yellow and black 12V connectors and connected it to the 520C and clocked it to 400mhz and it's rock solid with <1% errors:  In the end; same 520W PSU, 2 different generation miners and completely different results, one with >6% errors and one with 0.6% errors at 400mhz... go figure! I also notice on the newer miner the fan runs faster as it seems to want to keep the boards around 40 o whereas the older miner will keep them around 45 o... I guess there must have been an update to the PWM management software? to answer the question in the quoted post - it seems that either the fan drver or the fan model was changed, which is why the lower temperatures and frequently not spinning until hashing causes the fan to pass the minimum starting voltage |
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1st thing in my mind.... PSU Please make sure you are using a PSU with 2 +12v rails and each PCI-E cable is coming from it's own rail. (Not 2 PCI-E connectors from 1 cable) If the above is not the case, if you feel confortable unscrewing the hashing PCB on the network port side and other hashing pcb and swap it. Then turn on the antminer with 1 blade only. If it still shows many XXXXX then, it's time for the RMA to get a replacement Hashing PCB Just got an S1 in today and hooked up. I have a section of ASIC status all xxxxxxxx and only running 156 Gh/s(avg). I switched the PCI-e cables around and still the same. Upon further inspection I noted that the RF led is not a steady flashing rate on one of the blades. Only flashes a couple times every other second or so. Definitely not behaving like the RF led on the other blade. Anything I can take a look at?
easiest way to check is to measure the voltage with a multimeter across the two legs of the inductor (grey cube above the faulting 8 chips). You should pick up a voltage of 1.1V - If this voltage is not present it means those chips have no power. I had a similar issue with my second batch antminer but it was the first 'segment' on the board that had no voltage, thus none of the 32 chips on the side worked. Bitmain was very good at shipping me a replacement PCB |
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got coupons for 0.02BTC per machine in the last 1.9BTC batch! A little bit smaller than the 0.2BTC coupons before  Hahah. Well that's better than a kick in the butt. Let me know if anyone wants to donate/trade their .02 btc coupon to me. Looks like Bitmain dropped the price to 1.45 btc per Antminer. Just logged into their website. Let the "butt hurt" whining begin!! I'm sure there will be a lot of howling from those who just purchased. not at all. I received units today from the 1.9BTC batch (a little later than i wish i ordered, but still should go into the black) and I am pretty confident that they will mine about 0.5BTC before ones shipping on the 8th would arrive (likely the ~12th if ordering right now) I prefer the 24-hour notice, immediate-shipping fire-sales personally for the speed/price  |
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Hello everyone AntMiner S1 and U1 are in stock, orders are accepted from Jan.30, 2014. The shipping of this batch will be started on Feb 8th, 2014, right after the Chinese New Year. Those customers who place the order first will receive the miners first. got coupons for 0.02BTC per machine in the last 1.9BTC batch! A little bit smaller than the 0.2BTC coupons before |
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FAN HELP...thanks
I am having issues on 3 of 6 ANTMINERS received in this last order with what seems like bad/dead fans....
so on one unit the Antminer was running perfect, other than this unit had a particularly louder than usual fan for one of these rigs, the it stop running and of course the unit stopped mining and started beeping (awesome safety feature). So I thought bad fan, wrong, run good when testing it on the 2nd FAN PWN connection on a running unit...
so then I though bad power supply, wrong....
test a known good antminer, and it power up and mined perfectly....
then I started test the unit and found out by accident that just as I disconnected the fan it moved...I saw that and started messing with the plug and got the fan to work....Somehow if I shove the fan connect all the way down it won't work....I thought it was a bad/bent pin, wrong, then I thought a bad pin in the fan connector, wrong again...If I dangle the fan connector just right, it will run and the rig will mine, but if falls or is not a good connection or I shove it all the way down, no fan = no mining
same for the next 2 units. EXCEPT 1 unit did run with the fan connector all the way down and I could see the FAN RPM's in the web browser, but now I cannot. While it did run, unit 1 did have a weird burning smell....so I am concluding that these are not the same fans that came in earlier batches....and that maybe the speed sensor/control on the fan has burned out...and that was the burning smell....
and the fan works when I dangle/connect it just slightly to give power but not to the sensor???
thoughts, suggestions fixes ideas are welcome. I am ordering some new fans which are not as easy to find as some say, I did order one before and it was the right dimension, slightly wrong connector and pinned out wrong ( i had to swap the pins around in the fan).
thanks,
sbfree
ps. these 3 units are currently running, but I can't see fan RPM's nor can I shove the connectors all the way down or fan stops as soon as I try to do that.
there is some poor fan quality. my very first antminer had a terribly loud fan about 2-3x noisier then any 'proper' antminer since. I had another unit where the fan doesnt start until hashing or 'flicked' into motion (starting voltage outside threshold of idle?) and makes a bit of a clicking noise as it spins, perhaps a slight contact to the heatsink screws just below. bitmain was actually nice enough to send an extra fan with my last order for the 25th cut-off date (it arrived with a corner snapped off in transit somehow - nothing superglue didnt fix) and it is a: FXDS DC Brushless Fan Model: DC 12V 1A 140208 SZFUXIDESHUO CO.,LTD. *yes that's spelled right :p* |
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Guys how do you fix the x problem: xoxoxoxo xoxoxoxo xxoooooo oooooooo
Of the 9 Ants I got the last one is hashing at only 127GH/s because only 16 chips are working on the 2nd blade.
I disconnected the cables as told in post 1, but no luck.
Any ideas?
1) whats your power supply. a single 12V rail with >550W is needed for stable operation 2) reboot the miner - usually this clears any chip errors |
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Good stuff, thanks for the pic! Is that 12AWG wiring?
Any chance I can get another picture of how you're splitting each cable to the ant miners?
nope, its just harvested 18awg wire from random shit PSU's I have laying around. Im just evenly splitting the cables ... 2x cables per terminal, 3x each gnd / 12v to each blade =) better soldering job then some of my work - I am terrible at soldering fine points (partially due to having only a garbage 15W iron and a broad-tipped 100/140W gun) I find 14AWG is ideal - 12AWG is unnecessarily thick and very difficult to get to the right heat quickly, and 16AWG or 18AWG cannot handle too much current. with 14 gauge I can run about 200W per wire comfortably which makes the job a lot easier to do. Most of my antminers use either a single pair of wires per blade and some use two pairs of wire per blade. |
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Yep, the DPS-800GBA same as all the Blade backplanes use (if I'm remembering right). The board will also integrate current monitoring, and hopefully load balancing, same as the Z750P boards.
As for load-testing high power, I've used multiple Cubes so far but am working on a water-cooled adjustable dummy load for up to 2000W basically using current feedback to drive a parallel set of bigass FETs. Otherwise... dunno? Bunch of truck headlights?
have just modified a DPS-800GB A power supply following the instructions; pins 31 + 34 pins 30 + 12V and testing without load i see a voltage of 12.8V - without the 30+12V pins shorted, voltage seemed much closer to 12.0V I do NOT want >12.2V since this is for computer components rather than RC battery charging - Is the pin 30+12V connection designed to achieve a higher (12.8V) output, or will it drop to 12.0V once a load is applied? I followed instruction on the rcgroup forums with some testing, found my solution: shorting pins 31+34 turns on the system, with about 12.3V idle and 12.09V under a 400W load shorting pin 30 + 12V results in it jumping to about 12.8V (good for rcgroups, but not computer equipment) no issues after about 15 minutes now EDIT: MASSIVE FML - I assumed that because one PSU worked great the other would, and didnt fully test it before installing it at the very bottom of my crate build under 2 antminers and the working DPS-800GB. Had to cut all the power lines to the antminer (the antminer was also buried at the bottom of the build) and route them to a working supply Are you using 1xDPS-800GB to power 2 Ants or just one? Also...what's the efficiency of the DPS-800GB? I mean is it 80+ 90+ or worse than that?! I run 2 ants per dps-800gb with no issues this is on 240v. The fans in the psu do spin up pretty loud compared to running just one ant per psu though. The spec for ATX 12v power allows for up to 12.6v so I think 12.8 will be fine. I run mine at this. I have been running 1 per ant so far, but am tempted to try 2 ants on a single DPS-800 since it has closer to 840W at 120V. I would assume fan noise may get crazy though, so I have been avoiding it so far! EDIT: running two antminers on a single ATSN-7001044-Y000 (identical to a DPS-800GB) at stock speeds with no issues for 30min. If it can keep stable I will try overclocking to 375 or 387.5 |
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wonderful! when will they be for sale? |
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should I have both antminers (which are mining at eligius) be paying to my same bitcoin address or different addresses? is putting both under my same bitcoin address combing their effectiveness at the eligius pool?
no particulr advantage. you can specify thier worker names as *publickey*_*worker* on eligius to track multiple miners on a single account/payout address |
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Got my second AntMiner in today. Gotta say im not as impressed with this one. First thing I noticed was the thermal paste oozing out of the screws, a lot of it. Next was the fan. As soon as I plugged in the AntMiner the fan wasn't working and was giving off a burning smell. Ok, replace the fan and move on. Once fired up the I programmed it with no problems and set to mining. Then I noticed the green light on the left was flashing considerably slower than the one on the right. Checked the hash rates and sure enough 115 gh/z  Of the 4 "sets" of chips on that side. 1 is working. The other 3 either have all x's or all but 1 or 2. Those chips are not even getting hot. Any ideas? the thermal paste is a definite issue of theirs - I agree. use a few q-tips and 99% rubbing alcohol and it cleans away like new The fan on some of the new ones won't click on until the miner begins to hash. My assumption is they changed fan model and it requires a slightly higher minimum speed voltage to start. At least 1 of my recent antminers did that - I didnt pay close attention to the others though. whats your power supply? that's a symptom of not getting enough 12V power to the board and can happen if you have less than a 550W rating on a single 12V rail. Otherwise, rebooting the miner (with a 2-minute cooldown time) should get the chips running again |
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The ending block for this is 283382, probably sometime 2014-01-30
Submit a payment that is included in or before this block, your bid is counted.
Want to sell an Avalon, post it here. Set a minimum payment if you want.
Want to buy an Avalon for 0.25 BTC? Send 0.25 BTC to 1JE7PkQSHEy66n3dHAqxJC62aBKzUmWMhz and wait for a seller to post here.
I still completely fail to understand why someone who wants to buy mining equipment would send you bitcoins in the hopes that an avalon system is sold to you to be resold to the first person (at profit i assume?) Theres an entire auctions subforum and the computer hardware subforum to list miners for sale or post [WTB] ads |
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Rule #1 Don't get into Bitcoin mining to make a profit  you're doing it wrong then most of my equipment has paid for itself and funded growth. I went from 25GH on a bitfury starter kit to 1.65TH predominantly antminers |
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Understood
Thanks for clearing that out
I have one more concern, I'm seeing a significant reduction on the qty of times we get paid per day, are there plans to increase the hardware from 500th to 1 ph?
And if so, will the value of our held shares before the investment be conseidered as 2 ghs per share?
without a secondary IPO, yes. however, there is absolutely no responsibility on thier part to add any more hashrate - I imagine Buzzdave and tytus have a private mine that may soon eclipse the 72TH 100TH 200TH 500TH mine |
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I could, I would have to check the shipping costs though, since shipping outside north america adds about $20-30 to my postage
I'm still interested but will need to do some more checks on you before I decide it's a lot of money. Anyway is it possible to get some sort of tracking on the package and is there a risk that the customs will add some sort of fee? I will have decided tomorrow tracking: 100% - i would not consider shipping without a tracking number. Shipping would be around $50 depending on your postal code. I can send this with full declared sales value or simply the face value - Ive sent physical litecoins before without a problem, marking them as $10 "collectible coin" |
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Just got 4 more antminers wired up, last 2 coming tomorrow for a total of 7 antminers and a 256GH Bitfury system. - roughly 1.65 TH Of course, I wired up the entire crate with 2 antminers and 2 power supplies, got it in place, powered on - and only one PSU works  . With no good way of removing the bad PSU, I had to cut the power lines and route them to another PSU ziptied to the crate.    |
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