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https://bitmaintech.com/productDetail.htm?pid=00020140227111546291QgbvQbVr06FB

Anyone have any information about this or care to speculate about it?

They will be overclock able out of the box- no need for changing any resistors.

The U1's are overclockable too....
Do you mean to say the voltages...etc... will be easily changeable via software? That would be fucking awesome!

As far as I have been told- yup.

As the listing says: "Default hash rate: 1.6 GH/s, over clock by command"

https://www.bitmaintech.com/userfiles/image/003201402271121500444tfMubjH06CB.jpg

This heatsink sucks, now I cannot fill the whole USB hub, they will make contact :(.

BobSag3 , are you currently selling these in less than 500 batches.  I saw these through the antminer s1 post and just wondering what price your going for. At cost these things are are cheaper than the u1 with the added potential speed boost.

Add me to the list to inform when you get them ;) . At least I know your local.

nothing different then it was other then big ass heat sink

Its there for a reason ;)

i dont understand why they add this heatsink, i have 50 U1 and heat is not a problem at all

Because the U2 is intended to be overclockable out-of-the-box via software control.  Naturally, people will be trying this and, knowing nothing of how heat transfer works, would be running into issues with them overheating with the U1's thin plate heatsink.  I suspect you could still make the U2 overheat, too, anyway.

I figure if you've got 50 in one of those bulky USB hubs, a custom cooling solution is probably not out of reach if the physical dimensions throw a spanner into the operation.  Or just get another hub ;)

running 1.95 ghs on each, 10 pcs in each hub and 2 fans..

in my country i also get free cooling from outside.. :D my basement is always cold, even with 50 antminers in the room. :)

Does the actual board look shorter to anyone else? Or is it just me..Looks like it got shorter and fatter with the new heat sink.

I think it's just you.  Comparing the two, there have been some component changes (moved around/added, check the area around U5), but the overall dimensions appear to be the same.

Does it fit to asicminer 49-port hub?

I don't understand the purpose of these USB miners.

They will never make ROI, plus don't they have to be controlled by a computer?

And how much power does that consume?

Depends on the computer.  My tinker toy is a 60w headless xubuntu nettop. 

BBB or raspi draw next to nothing.

Power hungry PCs are being replaced in many segments of tech, not just mining.

ROI - not beating that dead horse today.

This is my setup, Raspberry pi B + usb erupter.
Raspberry pi only uses 3,5W and can be charged with a common phone charger.
Install minepeon which is super easy to use.

Not making any profit with mining unfortunattely, so I started selling mining contracts on ebay.(24Hour mining)
That was making me a few cents a day but with a more advanced rig you could make some real bucks.

http://s28.postimg.org/vf0afw6q5/20140220_202136.jpg (http://postimg.org/image/6yi4lf5zd/full/)

in fact, this is the only unit i have owned that make ROI.. not in mining, trading the hardware. selling these units was a great deal :)

It is also 15BTC for 500 units.

I have actually heard from a lot of people making good money by selling USB miners.

I personally don't think it is a good move for me.
If I had 15BTC to invest it would be on other things ;)

Down to 13.9 now.

the price went down because EUR/BTC went up

wow, 0.0278 BTC / unit is a really great price.

yep, we need a EU group buy

looking at this picture, you will still have to do the resistor swap  >:(
https://i.imgur.com/JppeTHU.jpg

Based on the picture, can you tell what is significantly different between the two models?

Check the area around U5 - that's where most of the changes are.

https://i.imgur.com/VJtIlZX.png
(warped a U1 pic to make them overlap)

Well done, Steve!  There is, in fact, a difference.  I'm interested to get my hands on few.

Yeah, though it looks like mostly caps. The fat and small one to the USB port side of U5 seem to be hooked up to U5, so maybe things coming out of it were a little unstable and its input needed better filtering.  Any software-side overclocking would probably just be in the firmware, in which case I'm not sure why it wouldn't be possible to do the same on the U1..except for that small heatsink being inadequate :)
Will just have to await more tech info.

I've got a New Zealand + Australia Group Buy (https://bitcointalk.org/index.php?topic=501732.msg5522786) up for the U2.

Ive got a few boxes of these on hand.... pretty nice.

Of the U2s?  hows the software support? do they use the same software as the prior versions?

Does anyone know how to overclock them? It seems it works different than the U1, at least I am not able to OC them yet.

Theoretically they're supposed to run identical software to the U1s which cgminer has full support for.


If they run the same as the U1 then it would take the same cgminer parameter to overclock it, i.e. adding '--anu-freq 250' would make them run at 2GH

Anyone knows about the voltage?

Is by the miner the Stock 0,8 V or a little bit more?

regards

Is anyone even considering buying these? 20 of these is about 1BTC and packs just 60GH when OC-ed. It will be months before ROI and by then difficulty would already be higher, especially if the mythical monarchs and other pre-ordered miners ever do ship out

I think buying any StickMiner (https://bitcointalk.org/index.php?topic=464496.0) thinking you'd make a monetary positive ROI would be silly at best.. unless you can get them for very cheap and don't have to pay for electricity and don't mind running them for a very, very long time, that is :)

They're just for fun, but if you manage to mine some satoshi's, and the price does another big pump, you might just get your ROI faster.
Actually, SHA256 mining is a new kind of risky speculating ;)

But overall, I'd love to have them for plain fun. Do some tweaks here, change the resistors there, ... and look at the results of your overclock. The software supports up to 4GH/s, I would like to get to that impossible number ;D Just preordered 10, can't wait for them to arrive.

I guess if you buy from bitmain directly, its not too bad, $17 a piece. One can probably sell 480 of them on Ebay for 40 a piece too :p and play with the rest

What price are you getting for them?

Bought them with this groupbuy (https://bitcointalk.org/index.php?topic=502003.0). So at 0.415BTC for 10 antminers + shipping.

Sell them for 40, no way.
You will be stuck with some 400 miners. Be my guest to try it out.

Most local sellers here sell them off with extras like USB hubs at a certain amount and help with the setup, mostly trough remote desktop. And they seem to be very profitable that way.

Like this guy:
http://www.ebay.com/itm/BITMAIN-ANTMINER-U2-2Gh-s-ASIC-Bitcoin-Miner-BTC-USB-Stick-USA-/291098149399

But I get your point. He's probably not making any actual sales at that price.

Well, you can check sales history - seems plenty sold at that price point.  Of course it could all be sockpuppet account purchases, but it doesn't really have to be.  While it's cheaper to get them out of the far east, you have to navigate the scammer waters, wait for shipping to commence, then wait for it to actually get there, then if there's any issues have to take it back to them, etc.  To some people, having a 'local' seller with product in hand is worth the extra $.  That, and there's plenty of naive people who simply don't know any better, just heart about Bitcoin and mining on the news and decided to hit up ebay/amazon for 'one of them miner things'.

I was looking at these but honestly what is the point if it will never reach ROI?  Why buy it? Even OC to 2.4Gh/s still is like 200+ days at current diff to barely pay for itself.  Please if I am missing something enlighten me. 

Random thoughts
Birthday gift
Btc introduction gift
Souvenir
At workplace or cafe who let you use outlet you could basically use your laptop to mine and not paying for electricity.

1. Why not
2. I'd look into the iMiner instead.  It's cheaper and a more gift-friendly package (same package as a regular USB stick, so you can still plug in a mouse next to it).  I did a teardown of one a while back.  Of course the downside is that they're pretty slow - but since neither would make the user rich..
3. If you're taking advantage of electricity offered to you, there's more powerful miners one could carry around and use.  I guess the main issue in the case of a cafe would be noise generated, so it would still have to be a passively cooled miner, like a twinfury/bi�•fury or an underclocked mini miner.

a) It's for fun, use the right SHA256 altcoin at the right moment, and you might just shorten that ROI a lot while having good ol' fun.
b) OC'ing them can be fun too.
c) You will get some BTC out of them, and if the BTC course does another big high, well.. Then you're one of the lucky ones with a BTC in its wallet when its 2000$ each ;D

Mining is speculating too, remember that ;)

Is there a new driver for the U2?

I used the standard CP210x_VCP_Windows driver.

Other than the spacing issue I'm having with u2...If I find mine doing wierd things. Do I just return to the place of sale or is there a better option[for r/d of the developer]?

I have a u2 that doesn't like the hub I had an old eroupter on(USB3 aitech) and won't work (red light with no green light), but if I plug it into a different hub which happens to be a rosewill 4amp 10 port hub usb2.0 with about the same connections it goes upon its happy way till I catch cgminer deactivating it and then I use the unplug setting and off it goes again. I gave it a wide berth on both though atleast the aitech has enough space between if I get the opportunity to buy more or iqnore higher hashing devices available.

Also notes for u3 ... Make a red blink on problems or have some sort of cgminer feature to blink a device so its easier to trace down whats not playing nice. At least my readynas device has this feature if I ever have that many nas's I can't count. The red light does nothing for me on the u1 (solid red) and at least the u2 does like the block eroupters and does a [blink blink blink solid] on the top green light when you first power it up.

Hi. Is there a tutorial of how to overclock this antminer U2??

I love the U2, I just use the bfgminer command in a .Bat or .Sh file.


Hex=Gh/s
---------
0581 =1.2
0681 =1.4
0781 =1.6
0881 =1.8
0981 =2.0
0A81 =2.2

It goes higher but i start getting high HW after 2.2.

Other than that, I would love to know of a Hardware part swap-out guide to get closer to 3.0 :)

Ok thanks so 2.2 max recommended?

Yes, I run a series of them inside of a 12V AC adaptor with a nice Corsair CPU fan cooling box. The U1's run max at 101C, but the U2's on my set-up so far run around 94C. As soon as I find a way to push above 2.2 with cooling and command line I'll post it.

Did anyone else receive units from batch 0331 (U2+, 2.0GH/s default hash rate) yet?
I am wondering that mine are also V1.2 and only work with 1.6GH/s with default cgminer settings (just like the previous U2 batch).

Since no one did reply I sent an email to bitmain asking about my current order.
Obviously additional parameters (--freq 0781: 1.6Gh/s / --freq 0981: 2.0Gh/s) need to be set to run it @2GH/s. I am just wondering where the difference is to the previous U2 batch. Does anyone have an idea?

I dont understand something. I bought 2 antminers also in cryptoware, and u2 are supposed to be 2GH/s base(1.6 its u1), so how can yours be 1.6? if its U2 version cant be less than 2GH/s ??? ???

Maybe I am mixing something up, so I hope you can clarify this:
When starting bfgminer/cgminer without additional parameters to set the hashrate (like "clock=XXX" or "--freq") Antminer U1 and the first version of the Antminer U2 (with the new heatsink) started to mine with 1.6GH/s per default.
Since the new Antminer U2+ is advertised with 2.0GH/s per default I expected they would start hashing with 2.0GH/s without adding parameters.
I know that I could add parameters to change the hashrate, but this was also possible with the U1/U2. So I am wondering where the difference is between the U2 and the new U2+

Edit:
U2= 1.6ghs stock
U2+= 2.0ghs stock (it appears!)

I have a U2+ on pre-order, it looks like the U2 efficiency (ghs/watt) was improved. They kept the same 2w consumption but increased the speed. My guess is that their upgraded the quality of, or added a different or additional part to the board (ie: oscillator, reststor, etc). There are several clear differences between the U1 and the U2 board, but I'm expecting a minute difference between the U2 and U2+; however, this could make a world of a difference in Overclocking


If anyone could get their hands on a Data Sheet for the U2+ that would be amazing. I have to say the U2 really makes a difference in HW's; I fine tuned mine last nite and I'm at a stable 2.16 with zero HW (x0891), and that's local; my global rate is 2.60

Could you please explain how you start cgminer/bfgminer and if you are using any special parameters?

1)Open notepad
2)Save as FileName.bat (you need a .bat file format)
3)Save it in the same folder as the .exe of cg/bfgminer
4)type:

Bfgminer.exe -S antminer:all -o stratum+tcp://address.com:3333 -u username -p password –set-device antminer:clock=x0981

5) save .bat again
6) double click and run

Also, you can use amu:all or different clock settings

I also add -s 20 -q 1 -E 45 for Scantime, queue, and Expire (i think it's capital E, sry I'm on my phone). These settings are for rapid Accepted shares of low value. I'm working on a setup for slower high-value shares. Depends on your pools method. I may have one character off in the command line, of it fails just open up the readme in bfg's root

Personally, I like to add as echo to the beginning of the file:

@echo off
echo loading AMU bitcoin miner...
Bfgminer.exe .................

Thank you for providing your parameters.
I did some tests, my goal still is to find out the difference between U2 and U2+.
So I plugged an Antminer U1, U2 and a U2+ into my computer and started BFGMiner (3.10.) without special parameters:
bfgminer.exe -S antminer:all -o stratum+tcp://POOL:PORT -u LOGIN -p PASS

After 6 Minutes of mining this is the result:
http://s7.directupload.net/images/140329/tgp4d4am.jpg

So I started again with additional parameters:
bfgminer.exe -S antminer:all -o stratum+tcp://POOL:PORT -u LOGIN -p PASS --set-device antminer:clock=x0981

Again the result after 6 Minutes:
http://s7.directupload.net/images/140329/jikfawsm.jpg

AMU 0 = Antminer U2+
AMU 1 = Antminer U2
AMU 2 = Antminer U1

When running with clock x0981 the only difference seems to be the non-existend hardware errors/rejects. Regardings the temperature I did not "feel" a big difference between them (which can be because 6 Minutes is not that long time). But actually I think there is no big difference between those miner versions, or do I misunderstand something?

It looks like you hit it head on! My U2 is day's running, non stop and I am grab them. Their ability to deal with heat will give them the long lifespan they need. However, with the U2+ it looks like almost nothing. This reminds me of the story of the Nvidia and R9 war; AMD's FX-9590 can also be seen this way:

A company will develop a new processor, during the manufacturing process four main (there are more I believe) triage categories are created for the new processors. Call them, Lo-Quality, Med-Quality, Hi-Quality, and the forth, 'Failures.' The releasing company will benchmark each chip. The chips that fail to meet their minimum requirements are discarded or put to scientific use (some how - I hope). The Lo-Chips are then put into, let's say, The R9 270x, and the Med /Hi are held. As soon as Nvidia releases their competing GPU with a comparable processor; AMD is already ready with their Med-Quality Chips, they package them up nicely, add some ram and cooling and a 280 is born. [Note: This is not the case, it actually happened with the generation before the R9 but I get confused with the numbers, and can't remember the exact models]. Now if we look at the FX-9590, it is the same CPU as the FX-8350 but capable of reaching 5.0GHz. This is because these chips preformed above their standards - they actually are better and faster, but their architecture is identical, hence the reasoning behind more cooling (the stock Liquid Cooling you get).

My point is, a chip is a chip. Silicone is unpredictable and better ones will be born. Can the U2+ be just the high quality chips repackaged, why not? Are they, I have no clue. .I'm going to follow your test and replicate it to see what data I can come up with as well.

http://i62.tinypic.com/zupjc4.jpg
That is my mining.......well dont know if I can call it a rig XD
Got the U2 hooked up to it and run it on 0981 (2GH). The pi is setup in a way that u dont need a monitor or keyboard for normal mining operations. Just plug it on a android charger. Done. Put cgminer together with the i2c compiled software in autostart. Made it plug n play ;)
I bought on u2 just to see how well it des without fan. well i ordered 20 more.

http://i60.tinypic.com/2i03os5.jpg
OK the last picture was taking 1 minute after boot. I want to show some ledgit stuff this picture I took 20 later. I am pretty new to all the mining stuff but the raspberry pi is my friend since it came out. Linux for life;)

Just rumor from one of my technician...
U2 can go up to 5GH but compressed to 1.6-2.2GH because theres not enough power from USB. In a way U2 is undervolt version from its original...

dont know if that is u2 or u2+ how to find out? Plus how do i supress errors? As i said still new in the game. Plus how hot is good? Right at the sec that thing is so hot that i can leave my finger on it for 5-7 sseconds before it starts hurting. i know that is not accurat but i dont have a thermometer laying around

I have my u1's running for a long time now and I am starting to smell solder.
Anyway they are still working, so I think the u2's can get pretty hot too.
If your antminers are clocked at 1.6GH/s they are U2.(you have to overclock them first)
If your antminers are clocked at 2.0GH/s they are U2+.

Where did u buy that LCD for the raspberry pi? is hard to install? thx

edit: ok its adafruit, found it ;)

I am about to build my Pi Miner today, my Hex Miners are getting too hot in my outside room. Nice job btw! For Error suppression try different CG builds (I heard the new release lowers the % much more); also try older ones, maybe even BFG. Otherwise alters the scantime, queue, and expiry can help a little. Your total HW should be 5% or lower on high clocks. Keep the temperature low; just cut a 12v .5A (1.5 depending on Fan) A/C adaptor and splice it into a Case Fan; throw the miner in a box and you're set. I operate between 94 and 100 F.

Look at the chip on your U2 - It will say 'ANTMINER' and below it will be the batch number; this will tell you if its U2 or U2+.

edit: spelling //Pics:

Replicating an HVAC 'Return Air' system. Contrary to a 'Tower' blowing air on a board inside of an enclosure will just move hot air around. You want to 'Pull' cool air from the outside through the enclosure - making it near air-tight will ensure for a closed 'loop' and maximum CFM (In HVAC Theory - as you can see I lose 20% [edit: I have 80% lose 20%] of my air pressure, but it works just fine. If you have Central Air in your home look for your Air vents on the ceiling and then look for what is known as the 'Return' its where you have to monthly change the air filter. This is was creates a circular air-flow and allows the cool air to continue to circulate by creating an artificial pressure system in any room.

https://i.imgur.com/CAJgBo2.jpg
Built & In Place
https://i.imgur.com/VZYFK3r.jpg
Inside - Removed the U2 for testing for this Thread
https://i.imgur.com/l5y8Xsc.jpg
Add Heatsink's to all U1's - $3.00 Ebay for a nice bundle
https://i.imgur.com/I3yEa5o.jpg

https://www.youtube.com/watch?v=k1mU4F4CS34 (https://www.youtube.com/watch?v=k1mU4F4CS34) Here a video of my first Bitcoin setup. The error rate is 13% :(

I just started coupe days ago. As I said before I love the Raspberry Pi made from XBMC, Game Computer with NES, SNES and PlayStation one Emulator to my Baby my Quadro Copter Drone. (Better then the cheapy Drone to control via smartphone.)

I like to learn more about the Bitcoin Stuff. ;)

Beautiful!! I am worried about using PI, this is my first time; I still need to get the LCD.

Also, try and mess around with scan-time, queue, and Expiry to lower your HW:

-Q 2 -s 20 -E 50

• --queue|-Q <arg>    Minimum number of work items to have queued (0 - 10) (default: 1)
• --scan-time|-s <arg> Upper bound on time spent scanning current work, in seconds (default: 60)
• --expiry|-E <arg>   Upper bound on how many seconds after getting work we consider a share from it stale (default: 120)

You can add these commands at the end of your shell string:
Also, keep in mine many pools have different Strategies:

• PPS - Pay Per Share
• PPLNS - Pay Per Last *N Share
• Double Geometric - PPLNS + A Capacitor You Charge With Your Shares -- https://bitcointalk.org/index.php?topic=39497.0
• BPM - Slush's Pool -- https://en.bitcoin.it/wiki/Pooled_mining
• P2P - Peer to Peer

P2P pools automatically set your work to restart after 10 sec - thus, setting -E to 8 or 10 would be most wise.

Currently I am experimenting with a massive Bitcoin-Blockchain spreadsheet and these parameters; to see if I can improve my miners locally and my quality of shares globally. I will share once I get some nice results; if they differ from the norm.

Why worry about the pi. As I read before, mining is gpu intense, cpu is irelervant. Just get a pi. Dont bother with special destros just put rasperian on do your upgrades/updates solder the display together (is easy) get the instructions from adafruit for the I2C stuff and cgminer. Put the display and cg in autostart boom done. The pi runs on 14% cpu load on day 2 now. I think its a waste of money to run this on a pc. Pi eats 5v 700mA

Oh wow, not impossible. Yes, a complete waste on a PC - 700mA are nothing, damn that's good. Thanks!

Quick question, can I just plug one of these into a USB 3 port on my motherboard or is a powered hub the only way to go? I'm only looking to purchase one at the moment to experiment with. Thanks for any help!

Check the specs of your USB ports.  The specs for the U2 state 2.95W @ 5V / 2GH/s, which is almost 0.6A.  That's technically outside the USB2 spec, but many USB2 ports can deliver more (since cellphones and tablets are rather power-hungry).  USB3 is rated for a much higher current, but your motherboard manufacturer may differentiate between data ports and 'data+charging' ports.  Even if you do end up needing a powered hub, you can pick one up at pretty much any big electronics store for cheap.  Btw, if you're in the U.S., jonesgear has some U2's on discount now.

I couldn't find the exact specs for my motherboard, but I found people using them in notebooks and pretty basic PC's directly so it should be a non issue. In addition, I just ordered my first Antminer from jonesgear! For anyone curious they are on sale for $23 with free shipping from jonesgear, the second cheapest I could find was $26.95 on eBay. Thanks a lot for your help Steve, I appreciate it!

No problem :)
Enjoy your U2 - StickMiners (https://bitcointalk.org/index.php?topic=464496.0) are awesome! :)

Yes sir. That is all it takes. Cheap small effecient and grauls like a big guy. If you need help with the setup or the soldering let me know, i helped a chick before over webcam how to solder her A/C conroller module. (haha that was a funny story). joke aside I got a TeamSpeak server for my biz to talk to clients all over the world.

http://i62.tinypic.com/21998wk.jpg

Got somebody better settings for the U2? I know i can put it up to0A81 for 2.2 but i think for that my usb hub is to weak. tryed it and my errors went from 13% to 70
That is a U1 config i found i just put the clock rate from 0781 to 0981 (2GHs)

I should have mine in a couple of days.  I'll see how far I can push it with a USB3.0 hub (more power than USB2.0 hubs).

I'll test it right now. I just got a new hub that should power it enough for 0A81...I hope :/

What's the verdict?  Will it hit 2.2 or 2.4?

I can't get a stable hash 0A81...I'm not sure if it's my Hub or what; I'm still trying. I can get it to pulse 2.5 then it drops off. I'm going to compile CGminer 4.2 for win later today and try that. I've been on the most recent BFGminer.

https://i.imgur.com/3nHet8H.png
AMU0 = U1
AMU1 = U2

Using:

0A81 drops off lower than these settings... :/

   I don't think BFGMiner recognizes the Icarus values any longer. It just ignores it. Once you get up to 4 AMU's running together BFG will run for a few minutes then bumps up the minimum diff to 4 and after about 20 minutes it will automatically increase the que also.

Yea, I've been noticing that with the Queue. The new CGminer requires you to recompile with --enable-" " strings. I'll try it later; I'm hoping to see something nice.

I run with my settings (see abouve pic. 2 GH/s even (2.08239). If i use 0A81 I get a 70% Error rate...USB hub to weak????

Maybe.  I know that on the U1s, if you tried it without doing a voltage mod, you'd get something similar.  It's quite possibly the same thing.
https://bitcointalk.org/index.php?topic=390929.msg4243390#msg4243390

If its a lot of Hardware Errors then probably need better power to the hub, if you have a good adapter check the cable to the computer.

Just got mine today.  I was able to get them up to 2.4 with 0% hardware errors after almost 2 hours of runtime. 
They do take up two slots each on my Anker 13-port hubs, limiting me to 6 per hub (without cables).

Nice would you like to share your config file. cuz mine is not running to stable anymore. would be awesome. Run my U2 on CGMiner 4.2.3 on a Raspberry pi

Here it is after 8-10 hours:
https://dl.dropboxusercontent.com/u/1856084/Bitcoin/u2.png

I'm using MultiMiner with the BFGminer 4.0 beta.

http://s18.postimg.org/nzwtrf1jp/IMG_20140406_123030.jpg (http://postimg.org/image/nzwtrf1jp/)
 My settings

http://s2.postimg.org/8f5ia1a8l/IMG_20140406_123427.jpg (http://postimg.org/image/8f5ia1a8l/)
My results

Hmm ok I am not a expert here and I just start playing with bitcoin stuff. As I mentioned before I use a Raspberry Pi with CGMiner Ver. 4.2.3 and one U2. So honsestly I dont have any idea what all the settings do. What I know is that I went thru alot of forums to find a answer;)

I know the numbers GH/s is high but the pool stats show only 1.3gh/s . Everybody in the web is just copies from forum to forum the same old stuff. Can somebody be so kind and explain their own settings if poss. using cgminer. The unit is cooled by a 120mm Tower fan i  riped out of a old tower, cut the cable and soldered it to a micro-USB charger cable.So the unit is pretty cool.

You are using icarus options inappropriately and telling cgminer to report double the hashrate. Don't use icarus options at all, they're totally not required with current cgminer and most people use them wrongly as you have.

That's correct.  Setting it to 2:2 causes it to display results 2x higher than actual.  1:1 is the correct setting.  It looks like you are getting a lot of hardware errors which is causing the low reported speed.  How are you powering the Antminer?

Ok so do I just delete the entire icarus-options line outof the config or do I have to thange the value to something else

Delete icarus options and icarus timing entirely.

Ok done. Is there anything else you would change to optimize the performance (add or remove)
BTW I make sure to post I to adafruit other forums and blogs as a sign of being greatful. I know you guys have to deal with alot of noobs/Beginners. After I posted in your offical CGMiner forum i saw that some people got upsaid so I was reading thru the entire readme and found the change with the clock settings;)
ohh here how it looks now.
http://s16.postimg.org/chfjc0xe9/IMG_20140406_131844.jpg (http://postimg.org/image/chfjc0xe9/)

Your screenshots still showed a lot of hardware errors.  How are you powering the Antminer?  You're not using the Pi's USB port without a powered hub, are you?

nope. Did some research I am aware that the usb miners are amp hawks. Here my setup the usb supplies 2A and the usb and a wireless dongle are the only consumers on it the big fan runs over a seperat usb cable i soldered to a old cellphone charge cable. Was reading that the pi got enough power of itself and not to suppy other devices with it
http://s27.postimg.org/96820mgan/IMG_20140406_132736.jpg (http://postimg.org/image/96820mgan/)

If you're still getting a lot of hardware errors, I would try hooking it up to another computer directly, then with the hub, and seeing what helps.  If none of them helps, it is possible that you have a bad stick.  If it works directly (with another computer), but not with the hub, then your hub is likely faulty.

ok I will check that out the USB hub is a cheap on so I start with that. I just wanna make sure that the config is ok as is.
http://s26.postimg.org/92fkd6gk5/IMG_20140406_135500.jpg (http://postimg.org/image/92fkd6gk5/)
So many people in the web are just assuming and guessing I was reading thru the readme and made the jump in the cold water by getting the newest version where other people say dont get the new one stay with 3.1.1 because everybody is using that one. Please let me know if u want me to add or remove more from the config file. Thank you very much to both of you and I keep u posted about the usb hub results

If it's a cheap hub, especially on a Pi, that's probably it.  I am given to understand the the Pi is picky about hubs.
As I understand it, there isn't any config that is needed on the new Antminers, but I also use BFGminer because of MultiMiner (sorry ckolivas), so my config isn't completely translatable to yours.  

ahh ok awesome I put down the clock level from 250=2GH/s to 225=1.8 GH/s and the HW errors droped from 70 after 15min mine run to   3HW error after 15 min run... Can we now automaticly point our fingers at the USB Hub and say "BAD USB HUB" or is that not prove enough to blame just the hub for th errors. As I understand, more gh/s more needed energy?

Current screen
http://s26.postimg.org/csjsjthsl/IMG_20140406_144620.jpg (http://postimg.org/image/csjsjthsl/)

Personally, I never use *.conf -- I always use *.bat files or *.sh files to run CG/BFG-Miner. You should be able to call a *.sh file on PI with terminal. Just input your commands, save as .sh, right click - properties - allow executable (or +x chmod), then run that file. First rename or .conf so it doesn't use it.

I know 3.1.1 still has Scrypt support and that is one main reason why people still use it. I am 1 step from compiling and testing the newest CGMiner if it wasn't for MingW and windows ridiculous dependency linking structure.

• Create New Text-File
• Save As Name.sh
• Set Executable
• Move into CGminer Root or put the address of CGminer root in the first line
• ./cgminer or  cd /home/use/cgminer/
• If -or- then type below it ./cgminer
• Your next line will simply be your input command line

I've been working on a Linux program to organize *.conf files for mining different coins and using different settings. It gets messy when you have 20 *.sh files or 20 *.conf files.

Unfortunately, no.  There could be any number of reasons for low power.  I've had hubs that didn't like to give good power to certain ports.  It could also be bad voltage regulation on the miner itself.  The only way to be 100% certain is to take the hub out of the equation.

Also, yes, .bat files are the way to go.

yeah I was reading that alotof people do that . It's just that Ijust started with this kind stuff. I orientated myself on the adafruit raspberry pi mining tutorial in conjunction with the PiMiner for the 6x2 display. They worked with config. files nice and need in autostart no monitor needed. I liked that idea so I basiclly stayed on that path. Try to not get to crazy confused by all this;)

HW Error increased from 3 to 6 in 46 min

While that's probably an acceptable error percentage, since you're underclocking, you should probably be seeing none, especially in light that I have 16 right now overclocked to 2.4 with no errors.

I have raspberry pi with minepeon (MinePeon-0.2.4.6-RaspberryPi.img).

Installed it into a sd card, and i use browser to access minepeon.

I have to antminers U2 connected in an usb hub to the raspberry pi.

I have a question.

The 2 antminers U2 are mining, but they are using default bfgminer.

I would like to know if you recommend me better to use cgminer, and where can i find a tutorial for installing it.

I just installed last minepeon version for raspberry pi, and then just setup the pool url with user and pass, and its mining, but i dont know if its better to use cgminer or not.

Thanks!

In my experience, there is no significant difference between the two insofar as performance is concerned.  Your only differences will be features, and for your needs it doesn't sound like it matters.

Ok, thx!

+1

i have 2 antminers U2+ and would like to know(in linux), with my raspberry pi, what command line do i need to overclock them.

Right now, they work without overclock at 1.95GH/s. and would like to increase it a bit, without damaging the antminer.

thanks

That ancient version has no support for antminers anyway. It thinks they're block erupters and probably runs them at ~500MH.

It depends on what mining software you are using.  Start with this thread: https://bitcointalk.org/index.php?topic=390929.0

I have bfgminer, default miner with minepeon for raspberry pi. but i will ask on that thread, its just i have antminer U2+ and i thought it would be better to ask how to overclock it here in the antminer U2 thread.

Ok the U2+ spouse to be at 2 Gh/s by just plug and play right? How do I know if I got a + or no +

oh and here for the record the overclock settings. A noob (me) did some homework

ohh commandline for BFG is on the end:            antminer:clock=xValue          (no space between x and value)
and then after the x the value for the clock rate
1.6=0781
1.8=0881
2.0=0981
2.2=0A81

For CGMiner newer Version          --anu-freq Value                            (space after freq)
1.6=200
1.8=225
2.0=250
2.2=275
2.4=300

thanks ;)

I just go two U2's but I can only seem to get one running... not using a hub, direct port off the WinXP laptop like I did with my BE's these replaced.

Any help is appreciated, using CGMiner 4.2.2

r - AMU device 3:1
 [2014-04-10 18:24:26] See README.txt file included for help
 [2014-04-10 18:24:26] Icarus detect (3:1) failed to initialise (incorrect device?)
 [2014-04-10 18:24:31] Accepted 13d3b1b1 Diff 13/2 ANU 0 pool 0
 [2014-04-10 18:24:31] Reconnect requested from pool 0 to stratum-lb-usa48.btcguild.com:3333
 [2014-04-10 18:24:32] Pool 0 difficulty changed to 2
 [2014-04-10 18:24:33] USB init, open device failed, err -12, you need to install a WinUSB driver fo
r - AMU device 3:1
 [2014-04-10 18:24:33] See README.txt file included for help
 [2014-04-10 18:24:33] Icarus detect (3:1) failed to initialise (incorrect device?)
 [2014-04-10 18:24:33] Rejected 2f483b38 Diff 5/2 ANU 0 pool 0 (unknown)
 [2014-04-10 18:24:37] Accepted 6665c294 Diff 3/2 ANU 0 pool 0
 [2014-04-10 18:24:39] USB init, open device failed, err -12, you need to install a WinUSB driver fo
r - AMU device 3:1
 [2014-04-10 18:24:39] See README.txt file included for help
 [2014-04-10 18:24:39] Icarus detect (3:1) failed to initialise (incorrect device?)

Either the driver did not install correctly on that miner or you have a DOA, unfortunately I have seen all to many of these new ones DOA. I have handled 8 that looked as though the component labeled 4RU was totally burnt/fried by the solder work at the factory.

Thats just it, both work fine because I can run either or as a single but when I try to use two at the same time I get the previously posted output.

I remember something similar with my BE's but I ended up getting them working somehow.

Try starting with only one miner installed in the laptop, let it stabilize, install the second miner and wait long enough for windows to assign the right driver. I've seen windows change COM# after it realized you have two of the same devices, not sure why, but it did this with a set of USB web cams I had a couple years back. Then try to "Manage" adding the second miner to the already running instance.   

So what, like start CGMIner let it run for say 10 mins under 1 stick then add the other ?

When I goto the add hardware thing and look or the silicon labs thing and click it I ge this...

Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42)

Gonna try and reset the laptop see if it helps butt if it doesn't then I guess I'll have wasted my cash on these damn things ;-/

There's your problem. Your 13 year old operating system gets confused when devices look identical to it. Go win7 or just about any linux instead.

I respect the fact of you authoring CGMiner but do you really have to make that childish of a post instead of actually trying to help ?

I think he just did both.

Ok, so whos gonna cough up and buy me Vista, Win 7 or try to each me linux to which I dont understand a single damn thing about ?

No one, wow who'd have thunk it... ok so back to this XP thing !

There are entire OS distros geared towards mining.  I'm sure you could manage with very little research. 

Sounds like a great learning opportunity ;)

Have you read through this thread?
https://bitcointalk.org/index.php?topic=270367.0

From some quick googling, the U2 seems to use a CP210x chipset.  I have no idea if you can reprogram the ID of the U2 with that tool, but if you can, that 'should' do it (see plenty of other posts about it working but being unstable when plugging in a whole bunch of miners).

That said... XP is EOS - even if you get it mining, you might want to consider how hard people are going to start knocking at your machine with exploits.  Go grab a Ubuntu or whatever 'live CD' copy, drop it on a USB stick (or CD/DVD if your machine won't boot off USB), and give it a try.. can't hurt.

Goin on that idea, I would need a second working system which I don't have or replace the system on the existing laptop which isn't just for mining but my every day use.

So ATM, it's XP or nothing... unless someone has a Vista CD they can send me a copy of. I have a Vista key for this laptop.

It's about 6 yrs old but I originally replaced the OS with XP and it never did come with a Vista CD.

Download the same version of Vista on piratebay and use your key.

Vista Home Premium

Seems I "must" download a torrent client to use pirate bay lol

Just my luck by the time I get done I'll have so many problems the laptop would probably be better off smashed.

   I don't know about piratebay  but I seem to remember Microsoft recently made downloadable versions of OS available thru its own site but your going to have to have a Microsoft ID like Hotmail/outlook whatever and sign in. Then read the instructions you may need a specific version of image burner to make your own Vista cd-rom or install it on a flash drive.
   The other option is to figure out how to use the FTDI Tool Kit from SiliconLabs to assign the devices unique serial numbers that XP won't have a fit over.
   OR...................consider that Ubuntu can be installed on a flash drive/burned on Cd-Rom and will run without removing XP. A learning curve will follow but it is a viable option, just not your preferred one. I tried Linux and it wasn't for me, but I'm not knocking the next guy who says he likes it, till he says the wrong thing, then he better start looking for a new barstool with intention!!!!!

I actually did DL that tool for the fun of it but when ran, nothing showed up in the device list.

As for the Microsoft thing, I do have a hotmail account but I've never heard of them having downloadable OS's.

 It came about when they decided to release Windows 8.1 free preview, so many people had used the same method with the free Windows 7 preview that they decided to make the recovery OS available for people who needed to switch back to the original OS because their hardware wouldn't run the upgrade and they couldn't find their back up.

Offtopic: What on earth was childish about it? It was nothing but factual.

Well I cant find any info to DL it, all I get is torrent stuff ;-(

It just came across as a bit smartassish to me as if you werent trying to help even though you may have been in your own way.

If I had other avenues I'd use them, and technically I do have one, it's just a matter of finding a clean copy of Vista Home Premium.

Edit: So I probably read too much in to it than needed, I just get frustrated easily.

Probably. People's moods usually make them read text discussions according to their affect at the time. I need to post hundreds of messages a day and I have no choice but to keep them very terse and factual.

The weird thing is, this same issue popped up on the BE's I have and I worked it out... it's just these damn U2's are being stubborn.

The easiest thing to do ATM would be to use the serial ID changer but I can't even get anything to load in the device list lol.

So ya, guess it's down to finding a clean copy of Vista HP ;-/

So yay for me getting two U2's in the mail today that I can't do shit with !

http://www.heidoc.net/joomla/technology-science/microsoft/57-windows-vista-direct-download-links
 This link may post, I don't know. I have used it in the past to recover computers that had the hard drive missing but the product key code was still available. It will require 7-zip and ImgBurn to create a bootable disk for installing a clean Vista OS. Its looks more complicated than it really is. No TOR No pirate yada yada yada. It uses the same ImgBurn method that Microsoft instructed people to use when they offered Win 7 & Win8.1 free previews. But XP won't work after you do this.

   Oh yeah, I got this link from Microsoft support several years ago, I did not just happen upon it.

1) Thx, will give it a look.
2) Figured as much about XP but I have my sticker and key for that as well if needed, just never got the Vista disc with this laptop.
3) Have 7-zip, think I have ImgBurn as well from when I set up my rPi so I should be G2G

Thx for everything thus far, will post back if I need further help !

Edit: Seems some of the links are intermittently dead lol, but I got install.wim and boot.wim downloading, just need to try and catch a good link on the exe.

After I get ImgBurn, I guess the trick will be doing this right if you might wish to help instructing me via PM so not to clog this post ?

   Yeah, should be able to just click the icon I think its activated. I have to walk the prop' from time to time but doesn't take to long.

Actually, before I get to that point of no return.

I should ask this, will Vista fix the problem at hand or is it just Win 7 and any linux disro like ck was talkin about ?

I skipped Vista, went from XP to 7 Pro-64 bit. Now you may consider that going to Vista may buy you a small amount of better security overall since XP support is over. Your going to need to upgrade eventually. Do it RIGHT NOW, or take a little more time and figure out if you are ready to upgrade, ie. back up your hard drive and make sure you have this or that.
 Is this the absolute answer to the USB policy..... I'm not sure, do you have a powered/or unpowered hub available to test first. It may be that separating the devices to... one in the laptop port and the other loaded on an interface USB device could trick XP into allowing both to work.

No hubs to test, and even if Vista does sole he current problem at hand it doesn't matter since the EXE file isn't being found... ATM all I was able to download are the two wim files.

What brand/model is the Laptop?

Toshiba Satellite L305D-S5895

Most Toshiba laptops with come with the factory software recovery image stored in a special hidden partition on the hard drive of the laptop. The factory software recovery image allows the user to recover the laptop to its factory fresh condition as when it was new.
This partition may also be referred to as the Partitioned Recovery Method or Free Recovery option.

 That statement is Cut-n-paste from Toshiba Support.
   It might be worth looking into for you. It says some where about going to page 62? User Guide and Manual. For instructions. I don't know if you wiped this out already but it might still be there.

I tried looking but couldnt find it so if it's hidden it's hidden well. When I installed XP I formatted the HDD so I don't know i that would have wiped the partition as well or just the main C drive.

FWIW though, the partition wouldnt suit current needs as it would lose everything on the drive right now. So at present the best option to save everything would be to hopefully get a working link for the exe download and then just "upgrade" everything thus preserving current contents.

When you format the hard drive it asks if you want it to wipe the drive entirely clean. The Looooong method, or just format the large partition. The recovery partition would probably be only 120 MB in size. Basically.
  Even trying to run two identical CD-ROM's is impossible with XP and I don't know if that was resolved with Vista or 7.
    Unless Silabs tool lets you assign a unique serial number to each device and XP recognizes it as different devices you may have to walk towards the bright light and submit XP or your second U2. :'(

In regards to ilabs, I tried two different tools and none would populate the device list lol.

Not submiting anything yet but it would be nice to get this damn exe link to work...

This looks nice, very cheap and low power

 Its an ooohhhhllldd link I had socked away in a dark corner I have nooo idea if the path is still valid for the Vista OS. You could also try FILE GURU they have links to recovery media but look carefully before you click they have adtraffic sponsored tiles that just take you to key word search engines.

Any way to clock past 2.2 with bfg?  I have two of these plugged in my desktop usb  ports running at 2.2 with 0 errors so I figure I can overclock it a bit more..... 

Not sure but speaking of OC'ing.

I'm running CGminer on a windows laptop running the exe in a minimized cmd window. Unlike linux where commands can be given etc., how might one go about trying to OC woth my setup ?

Not looking to tweak it to 2.2 or more like the quote which will more than likely burn the ASIC's out in no time. I just want to try and get a steady 2.0 from the current 1.58/9 average.

Yes, I posted about this a couple pages back: https://bitcointalk.org/index.php?topic=490559.msg6095762#msg6095762

I missed that, thanks!  Both my u2+ in my desktop running 2.4 since early morning with no errors =-)

Whats Multiminer and how about with CGMiner ?

Even if it's the same lined posted, I would have no idea how to use it since I don't recall a way to enter commands unless it goes in the config file in one way or another.

FWIW, here's my CGMiner config file.

Also another yes here. I'm running 5 U2+ all settling in a between 2.26 & 2.29 using a clock speed 0B01. One thing I discovered in with my USB hub/Antminers is that using speeds of either 0x01 or 0x81 with x being a hexadecimal number to set the speed, that bfgminer would work with it.
the only question was would the Antminer deal with it or give HW errors. I actually tested all of mine 2 at a time just so I could find out the rock stars vs the grinders.

Also there are number of threads here and elsewhere that I've read that the USB hub can be an issue. It tends to be an issue with how much power is going to the hub and can it provide enough power to the miners plugged in. Most of the USB 2.0 hubs that come with power supplies don't provide enough juice for U2+ miners. Ironically, the Amazon branded 7 port USB 2.0 port hub has a 4 amp adapter which should be good for our Antminers.

Now my question...I'm about reuse my wife's old netbook (currently Win XP) and was thinking of putting linux or unix on it. Suggestions on OS geared towards to mining?

Windows XP will likely only find a few of the miners.  Any linux distro should work, but I don't know of a specific one.  You might consider just getting a PI and running MinePeon.
So far as hubs go, I'm running two Anker USB 3.0 13-port hubs for 10 miners (5 each).  It's running all of them at 2.4 with 0% errors.

How do i finde the antminer
in the Computer ??

How do i know if driver are installed ??

If the miner softwher dont finde it and i cant find it under DEV

HOW do i Install driver for the AntMiner

Can anyone help me whit that
I serche and serch the fycking Web and come upp whit nothing
Or im to stupid to anderstand

Plz
Help

This remains to be seen.  English as a 2nd language at the minimum.

Are you on windows?  What version?  What mining software are you trying to use?