ANTMINER U3 Discussion and Support Thread

[Mikestang]

Did anyone try to mod the U3 for quieter operation?

Are you serious?  It's one 80mm fan, my desktop has 10 of them.  White noise is relaxing, you should learn to enjoy it!

[Riseman]

Did anyone try to mod the U3 for quieter operation?

Are you serious?  It's one 80mm fan, my desktop has 10 of them.  White noise is relaxing, you should learn to enjoy it!

My has only 9 so it's much quieter Or probably it depends on the U3 batch and fan model.

[notlist3d]

Did anyone try to mod the U3 for quieter operation?

Are you serious?  It's one 80mm fan, my desktop has 10 of them.  White noise is relaxing, you should learn to enjoy it!

Can you show a pictue of the 10?  I would love to see that!

And thanks to the person showing cooling adapter that is interesting!

[CrazyGuy]

Did anyone try to mod the U3 for quieter operation?

Are you serious?  It's one 80mm fan, my desktop has 10 of them.  White noise is relaxing, you should learn to enjoy it!

I've had an SP20 running in an an adjacent room for the past year and never noticed anything from my U3. Got rid of the SP20 and now the U3 is making its presence known, but it's barely noticeable.

By the way, my customized R1 has been running my U3 without human intervention for around 6 weeks now.

[heathkun]

my miners slow down when I use more than two with cgminer. Is that a problem I will have with the r1? I always have to have 4 copies of cgminer open to avoid the slow down....

I noticed that my averages were always less than desired when I ran between 4 and 8 U3's on an R1.  I found myself rebooting the R1 often to get my hashing back to desired levels.  I ended up going back to using a PC to run the U3's since I have had far better averages and I unplug and plug back in the zombie U3's a lot less than I was rebooting the R1.

[notlist3d]

Did anyone try to mod the U3 for quieter operation?

Are you serious?  It's one 80mm fan, my desktop has 10 of them.  White noise is relaxing, you should learn to enjoy it!

I've had an SP20 running in an an adjacent room for the past year and never noticed anything from my U3. Got rid of the SP20 and now the U3 is making its presence known, but it's barely noticeable.

By the way, my customized R1 has been running my U3 without human intervention for around 6 weeks now.

I have been running mine for weeks aswell.  Has been nice not to touch my 3 U3's.  Truly a lotto machine I don't mess with at this point.

Complete change from when I was running them on my windows machine.

[christiansenn]

Did anyone get a reset script to work?

Tried
echo "0" > "/sys/bus/usb/devices/usb1/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/usb1/power/level"
echo "0" > "/sys/bus/usb/devices/usb2/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/usb2/power/level"
echo "0" > "/sys/bus/usb/devices/usb3/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/usb3/power/level"
echo "0" > "/sys/bus/usb/devices/usb4/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/usb4/power/level"

But seems it not working i still have to power on /off the u3s

[.anto.]

Did anyone get a reset script to work?

Tried
echo "0" > "/sys/bus/usb/devices/usb1/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/usb1/power/level"
echo "0" > "/sys/bus/usb/devices/usb2/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/usb2/power/level"
echo "0" > "/sys/bus/usb/devices/usb3/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/usb3/power/level"
echo "0" > "/sys/bus/usb/devices/usb4/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/usb4/power/level"

But seems it not working i still have to power on /off the u3s

I am using BFGMiner on my TL-WDR3600 WiFi router. I only connected 2 of my Antminer U3 to it on /dev/ttyUSB0 and /dev/ttyUSB1. I use the following script to toggle both ttyUSBs when one and/or both miners are dead.

Code:

#!/bin/sh
# Switch OFF ttyUSB0
echo "0" > /sys/devices/virtual/gpio/gpio22/value
# Switch OFF ttyUSB1
echo "0" > /sys/devices/virtual/gpio/gpio21/value
sleep 10 
# Switch ON ttyUSB0
echo "1" > /sys/devices/virtual/gpio/gpio22/value
# Switch ON ttyUSB1
echo "1" > /sys/devices/virtual/gpio/gpio21/value
exit 0

That script does not help all the time. I sometime still need to physically unplug and re-plug the USB cables. And if that still does not bring the miners up and running in stable condition, i.e. one of the chips shows to have 0.0 Gh/s effective hash rate, I have to also physically unplug and re-plug the power cables.

[qByter]

Hello,

I´m quite new to mining and recently got me an U3 to play with it... 
I started with the compiled cgminer binaries for Windows from the antminer website (version 4.8.0) and used the settings from this thread:  --bmsc-options 115200:0.5 --bmsc-voltage 0800 --bmsc-freq 0B82    and got a solid 74GH/s (ran 2 days with some minor hardware errors, but solid).

I now switched to a Raspberry2 and compiled the latest cgminer 4.9.2.  I´ve tried various settings but cannot get anywhere near the 74GH/s that the old windows cgminer runs at.
Does anyone know which settings equal the above?

Thx and regards

[Mikestang]

It was never actually hashing at that rate, it was incorrectly reported by bitmain's cgminer fork.  Did you ever compare the reported hash on your end to what the pool you were mining to saw?

Volt 800 and freq 250 typically results in the max. hash rate, though YMMV as almost every U3 responds differently.

[zOU]

I agree with Mike, +/-63Ghs is the max you should get with these settings.

[qByter]

It was never actually hashing at that rate, it was incorrectly reported by bitmain's cgminer fork.  Did you ever compare the reported hash on your end to what the pool you were mining to saw?

Yes, I did, the pool also reports ~72-75Gh/s, continously... And it´s the only miner I have running, so I guess it´s true

I have now found and compiled the bitmain fork and I am back at that rate with the raspberry...  All good

[Mikestang]

Well we all know that every U3 is it's own animal, so maybe you lucked out and got the only one ever made that actually performs better than advertised.  I, on the other hand, am left with one U3 and it won't hash over 45GH/s no matter what settings it has.

[zOU]

Well we all know that every U3 is it's own animal, so maybe you lucked out and got the only one ever made that actually performs better than advertised.  I, on the other hand, am left with one U3 and it won't hash over 45GH/s no matter what settings it has.

same here, out of my 6 U3, one will not got over 43Ghs....

[Riseman]

Well we all know that every U3 is it's own animal, so maybe you lucked out and got the only one ever made that actually performs better than advertised.  I, on the other hand, am left with one U3 and it won't hash over 45GH/s no matter what settings it has.

Maybe it's got one dead chip out of four?

[Mikestang]

Nope, all systems are go.  It's a piss-poor piece of hardware is all, I'm just glad it hashed at all, the R1 as a controller has made it much more tolerable.

[notlist3d]

Nope, all systems are go.  It's a piss-poor piece of hardware is all, I'm just glad it hashed at all, the R1 as a controller has made it much more tolerable.

I admit that the R1 from crazyguy made my life a lot easier.  I love automation and not touching it.

I have 3 and I had to  every monrning... every night.... reset the zombies.  And I would miss lot's of time with them  being zombied.

[christiansenn]

Hi
I just got the R1 crazy how do you connect 3 which USB hub?

[lama-hunter]

Hi there Guys

Iam using still 2 Antminer u3 stady and have also 2 more for some Solo Mining events with friends.
The Problem i got so far is my Config.

One out of the Miners gets really Hot and the other ones running stady on that voltage - See the Config below :

cgminer.exe --bmsc-options 115200:0.54 -o stratum+tcp://stratum.bitcoin.cz:3333 -u x -p x --bmsc-voltage 0830 --bmsc-freq 0982

You think the Voltage i use is to high? I heared from another person that iam using a quit high voltage for this :/ MAybe someone of you guys could help?
Would be really great for me

regards
lama-hunter

[christiansenn]

Hi
I get:

SB management [P]ool management ettings [D]isplay options [Q]uit
 0: AU3 0       : 225MHz 775mV            | 56.95G / 55.49Gh/s WU:775.3/m
 1: AU3 1       : 225MHz 775mV            | 56.23G / 55.36Gh/s WU:772.6/m

is good?

They do zombie every 24 hours i have to power on/off though..