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Author Topic: [Guide] Dogie's Comprehensive Bitmain Antminer U3 Setup [HD]  (Read 30170 times)
Mikestang
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March 16, 2015, 01:34:59 AM
 #41

USB hub received, I hooked it up to my power supply, plugged in one U3 and it worked just fine.  Plugged in the second and ERROR.  Quit and restarted with them both plugged, more ERROR.  They both hash together at about 30gh each (down from 59 alone), but with constants errors as below.  So what else could it be?  (I unplugged one USB toward the bottom, I think that's what the last 3 lines are starting to show)

Is that a powered USB hub?

Yes, 12V DC off my computer psu.
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March 23, 2015, 06:16:59 PM
 #42

Got a U3 today and can't get cgminer to recognize it. Computer knows it is there, driver is correct. Tried it in direct usb2, powered hub 2, and usb 3.

Installed cgminer 4.9 instead of the newest one and it works now.
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March 23, 2015, 07:31:20 PM
 #43

Got a U3 today and can't get cgminer to recognize it. Computer knows it is there, driver is correct. Tried it in direct usb2, powered hub 2, and usb 3.

Installed cgminer 4.9 instead of the newest one and it works now.

Yup, I pointed that out in a couple other U3 threads, I think in the official cgminer thread, too.  cgminer 4.9.1 will not see U3s, but 4.9.0 will.  Send in your bug report, hopefully it can get picked up next build.
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March 25, 2015, 04:26:02 AM
 #44

I cleaned up the factory thermal paste application and reapplied it correctly on all 3 of my U3s.  It made a little difference, each one runs 1-2gh faster than before when run solo, which I can attribute to better heat dissipation.  But it made absolutely no difference (as I expected) in more than one working when plugged in at the same time.

So now I think I've tried everything.  Anyone else have any ideas?  Undecided
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March 26, 2015, 05:55:14 PM
 #45

I cleaned up the factory thermal paste application and reapplied it correctly on all 3 of my U3s.  It made a little difference, each one runs 1-2gh faster than before when run solo, which I can attribute to better heat dissipation.  But it made absolutely no difference (as I expected) in more than one working when plugged in at the same time.

So now I think I've tried everything.  Anyone else have any ideas?  Undecided

The last thing now is to try a different computer or host to see if you can wittle the problem down to controller or U3s.

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March 26, 2015, 06:23:47 PM
 #46

I cleaned up the factory thermal paste application and reapplied it correctly on all 3 of my U3s.  It made a little difference, each one runs 1-2gh faster than before when run solo, which I can attribute to better heat dissipation.  But it made absolutely no difference (as I expected) in more than one working when plugged in at the same time.

So now I think I've tried everything.  Anyone else have any ideas?  Undecided

The last thing now is to try a different computer or host to see if you can wittle the problem down to controller or U3s.

I've tried on two computers, I guess I could try on others.  The two I use are both kinda old and Run WinXP SP3, so maybe I need to try a current machine/OS combo and see if that makes a difference.

I feel like a crazy person that I can't get more than one to work.  I can read through threads and see that it is possible, but I just can't seem to find a break.
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June 03, 2015, 05:22:05 AM
 #47

will this run on a computer that is running a scrypt fury? Cant get it to work on that computer.

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Meuh6879
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June 17, 2015, 05:44:00 PM
 #48

don't use cgminer and zadig driver ... is a solution.
https://bitcointalk.org/index.php?topic=885753.msg11626607#msg11626607

clean the zadig install : http://www.smallbulb.net/2013/287-detaching-ms-windows-libusb-driver
install a "COM" virtual port (yes, a old and very strong serial port)
install BFGminer
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June 29, 2015, 09:12:17 PM
 #49

Antpool
Code:
cgminer.exe -o stratum.antpool.com:3333 -u dogie_U3 -p 123

Hi,
Got my very first antminer U3 miner today Smiley

I got it working fine and easy thanks to this great guide, Thank you.
I did need to do something different for it to work.

I needed to set my bat file to:
cgminer.exe -o solo.antpool.com:3333 -u userid_X -p 123

Instead of
cgminer.exe -o stratum.antpool.com:3333 -u userid_X -p 123

Has pointed out in this thread.
I was wondering what is the difference?

Also while searching around for solutions I found some posts that have added parameters to the command line.
In fact, one of the sources I found was antpool page:
https://www.antpool.com/support.htm#help_2_3
They provide this example:
cgminer.exe --bmsc-options 115200:0.6 -o solo.antpool.com:3333 -u antminer_1 -p 123 --bmsc-voltage 0800 --bmsc-freq

I'm not looking to overclock but I'm guessing this command is for that purpose right or something else?

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June 30, 2015, 01:04:02 PM
 #50

I needed to set my bat file to:
cgminer.exe -o solo.antpool.com:3333 -u userid_X -p 123

Instead of
cgminer.exe -o stratum.antpool.com:3333 -u userid_X -p 123

I was wondering what is the difference?
They should both work, AntPool has many servers with different names and port numbers. That is unless something has changed recently and that address has stopped.


I'm not looking to overclock but I'm guessing this command is for that purpose right or something else?
It depends what (and who's) version of cgminer you're running. If what you have works then stick with it.

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June 30, 2015, 02:13:00 PM
 #51

I needed to set my bat file to:
cgminer.exe -o solo.antpool.com:3333 -u userid_X -p 123

Instead of
cgminer.exe -o stratum.antpool.com:3333 -u userid_X -p 123

I was wondering what is the difference?
They should both work, AntPool has many servers with different names and port numbers. That is unless something has changed recently and that address has stopped.


I'm not looking to overclock but I'm guessing this command is for that purpose right or something else?
It depends what (and who's) version of cgminer you're running. If what you have works then stick with it.


Hi Thank you.
I will stick to my current configuration then. But I'm running cgminer 4.9.2

I was busy opening a new thread, but maybe you can help me has I can not find a fix, only people complaining of the same.
How do I connect two Antminer U3 on the same computer?

I tested then separately first to make sure each one is working. I confirmed that, and no errors. All working fine.

When I connect both antminers I start getting error:

 [2015-06-30 14:32:29] AU3 1 attempted reset got err:(0) LIBUSB_SUCCESS
 [2015-06-30 14:32:29] AU3 0: No valid hashes for over 2 secs, attempting to et
 [2015-06-30 14:32:29] AU3 0 attempted reset got err:(0) LIBUSB_SUCCESS
 [2015-06-30 14:32:39] Accepted ****** Diff 840/256 AU3 1
 [2015-06-30 14:32:47] Accepted ****** Diff 1.96K/256 AU3 1
 [2015-06-30 14:32:50] Accepted ****** Diff 508/256 AU3 0
 [2015-06-30 14:32:55] AU3 0: No valid hashes for over 2 secs, attempting to
et
 [2015-06-30 14:32:55] AU3 0 attempted reset got err:(0) LIBUSB_SUCCESS
 [2015-06-30 14:32:55] AU3 1: No valid hashes for over 2 secs, attempting to
et
 [2015-06-30 14:32:55] AU3 1 attempted reset got err:(0) LIBUSB_SUCCESS

Any suggestions?

PS: Both U3 are directly connected to my Windows XP machine, no hub in the middle
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June 30, 2015, 08:55:33 PM
 #52

Read through the other thread you posted in and follow my trail, I tried several different things to get 2 to work together and never had any luck.  You could try the same things, but chances are you'll just be wasting your time.  Do you have 2 computers to each run one?
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June 30, 2015, 09:57:00 PM
 #53

Read through the other thread you posted in and follow my trail, I tried several different things to get 2 to work together and never had any luck.  You could try the same things, but chances are you'll just be wasting your time.  Do you have 2 computers to each run one?

Hi.
Yes I do have two computers. But the idea was to have one for mining, also less electricity. But I left one on each running.

I'll give it a try with a linux machine and see what happens.

It mite be that my windows xp does not have enough resources to run two antminers at once. Its a old machine.

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June 30, 2015, 10:33:43 PM
 #54


It mite be that my windows xp does not have enough resources to run two antminers at once. Its a old machine.



Mine is old, too, and still runs XP, so yea, I think that has something to do with it.
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July 17, 2015, 06:00:44 PM
 #55

What are the best settings for the U3 without really taxing the unit? I am just running it without any settings other than stratum - user- and password.

Thanx guys!  Smiley
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July 20, 2015, 06:35:18 PM
 #56

If it runs satisfactory to you in stock setting leave it like that.

800v 250freq is considered pushing the machine pretty hard, although some folk run as high as 830v.

When I ran mine I used about 785v 237.5freq.

Get yourself an extra fan on the bottom of the unit if you're going to OC, they get hot.
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September 11, 2015, 03:28:45 AM
 #57

is there a cgminer for Mac OS ? I would like to connect a u3 to a Mac Mini.
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September 11, 2015, 08:16:27 AM
 #58

is there a cgminer for Mac OS ? I would like to connect a u3 to a Mac Mini.

See unofficial compilations here.

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November 04, 2015, 06:50:56 PM
 #59

Try something like cgminer.exe  --bmsc-options 115200:0.57 -o stratum+tcp://mint.bitminter.com:3333 -u   --bmsc-voltage 0800  --bmsc-freq 1286
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November 14, 2015, 09:56:38 PM
 #60

I'm trying to get my 2 Antminer U3 devices setup. I've done all the correct steps with Zadig, but for some reason, when I try to run CGminer, it says "No devices detected! waiting for USB hotplug devices" I'm new to Bitcoin, too.
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