I have a U3. It says it is version 2 on the box, but is a solid cover.
It runs fine hashing ~60-70. I leave it running when I go on trips and it's still up when I return.
Note:
1. I'm using the USB cord it shipped with
2. I'm using the power adapter it shipped with, no issues.
3. cgminer 4.9.1
4. "au3-freq" : "250.0",
5. "au3-volt" : "800",
6. It's as lucky as all the lottery tickets I've ever purchased, as well as all the tickets my family and everyone I've met has purchased.
If I swap it from one machine to another or undock the laptop, I do occasionally need to pull power and usb before it is picked up. It is typically running off a docked tablet or laptop.
For whatever reason 4.9.0 seems to find it faster than 4.9.1.
Any recommendations on the below would be great. But I solved the problem by launch order.
*I have to launch the u3 batch file before I launch the gridseed batch file (cgminer 4.3.5). If the gridseed launches first it picks up a "Zus: Blizzard"
1: ZUS 2:27 : Blizzard 2 MHz | 8.029K / 194.1Mh/s WU:0.0/m
I've tried to blacklist this, but the write to conf file just crashes.
Topic: ANTMINER U3 Discussion and Support Thread - page 38. (Read 149489 times)
I've found there is no single answer to these units. I have 2 currently, one of them doesn't respond to OCing at all, and always has about 2% error. The other will OC up to about 58GH/s, but it won't hold it for long.
Indeed. This is just a bum product. I will probably not buy any of the U-series from Bitmain anymore until they're far more proven. Of course ... they'll be useless if I wait. If others replicate my experience no one will buy this crap anymore. Not a good move by Bitmain.
I've found there is no single answer to these units. I have 2 currently, one of them doesn't respond to OCing at all, and always has about 2% error. The other will OC up to about 58GH/s, but it won't hold it for long.
I found if I overclock the U3's they don't seem to go zombie. Normally, they would zombie-out after 48-72 hours. But when I add this to the start-up batch file for cgminer they run without failing: --au3-volt 850 --au3-freq 250
Very bizarre.
Very bizarre.
What do you think of these for lotto users? Is this the best small asic for it?
Or would you suggest a different little miner for lotto?
No, these are crap and unstable. They rarely run for more than a day before crapping out before you need to manually reset them.Or would you suggest a different little miner for lotto?
Agree. I have 2, had 3 at one point, they are not worth a shit.
Buy an S1 or S3; cheaper, faster, and rock-solid.
What do you think of these for lotto users? Is this the best small asic for it?
Or would you suggest a different little miner for lotto?
No, these are crap and unstable. They rarely run for more than a day before crapping out before you need to manually reset them. Or would you suggest a different little miner for lotto?
What do you think of these for lotto users? Is this the best small asic for it?
Or would you suggest a different little miner for lotto?
Or would you suggest a different little miner for lotto?
Yeah I can't get mine to show up on cgminer so its been a waste. It worked "okay" at one point, but now it powers on just won't connect.
Do you have Version 1 (metal cover with air-holes) or Version 2 (wire-frame)?
Version 2 wire frame
I currently have two of the Version 1's (solid metal with air-holes). They seem to stay connected but need to be reset every day or so. I hope yours is not broken for good, does it show up in Device Manager? We need BFGMiner support soon.
That was how this one ran when I first hooked it up. Yeah it shows up I just can't seem to get cgminer to find it anymore...I kind of lost my patience with it, and set it aside so maybe i need to give it a few more tries.
Yeah I can't get mine to show up on cgminer so its been a waste. It worked "okay" at one point, but now it powers on just won't connect.
Do you have Version 1 (metal cover with air-holes) or Version 2 (wire-frame)?
Version 2 wire frame
I currently have two of the Version 1's (solid metal with air-holes). They seem to stay connected but need to be reset every day or so. I hope yours is not broken for good, does it show up in Device Manager? We need BFGMiner support soon.
Yeah I can't get mine to show up on cgminer so its been a waste. It worked "okay" at one point, but now it powers on just won't connect.
Do you have Version 1 (metal cover with air-holes) or Version 2 (wire-frame)?
Version 2 wire frame
Yeah I can't get mine to show up on cgminer so its been a waste. It worked "okay" at one point, but now it powers on just won't connect.
Do you have Version 1 (metal cover with air-holes) or Version 2 (wire-frame)?
Yeah I can't get mine to show up on cgminer so its been a waste. It worked "okay" at one point, but now it powers on just won't connect.
Many of these sell on eBay with a laptop-type power supply? Is that safe and OK to use?
Read through the thread and you'll see that you shouldn't over clock with them or they melt.
Thanks, I appreciate the feedback.
Many of these sell on eBay with a laptop-type power supply? Is that safe and OK to use?
As long as they're rated for the power consumption they should be fine. Figuring out if they're truly rated for it and not just claimed to be is usually the issue - read a few posts up for an example of a power supply I wouldn't particularly use, but the person asking has been happy with them.. make your own risk assessment 
Many of these sell on eBay with a laptop-type power supply? Is that safe and OK to use?
Yes, the metal base gets VERY hot on the v2's as well. I use a thermaltake usb fan for the underside and it keeps it much cooler
Just picked up the two v2 units I have in front of my laptop that have been running all day. The bottom plate is cool enough to hold each in my hand comfortably. Running these at default specs and they consistently do 56gh+. BTW, anyone have ideas about stacking the v2 units as I've seen done with Gridseeds? Thought about using standoffs but doesn't seem like they would be stable. I've done a little experimenting and it looks like about 1½" spacing between gives enough room for proper cooling.
What is it about these units that causes such drastic end user experiences? Of the 3 I have, all 3 are almost too hot too touch on the bottom when running. Default specs I never see more than 40GH. Did you have any problems getting them both to run at the same time?
Running 2 at a time seems to work OK. Sometimes CGMiner will switch one or both units to a new AU3 number, but they keep on mining. Here's my setup:
1} Dell M4500 64-bit i7 Quad, 16gb, stand-alone DSL connection. CGMner runs OK, but with other mining hardware BFGMiner x64-seems to run faster and more stable. Looking forward to trying the v2's with BFG 5.20 when it becomes available.
2} Have used these Anker/Orico/Aitech 10-port aluminum hubs for 2 years with no problems. Having a power switch makes it easy to reset without unplugging the U3's When a unit goes zombie, just shut down CGMiner, power off the hub, wait a few seconds, restart the hub and restart CGMiner.
http://www.amazon.com/Aitech-Adapter-backward-Compatible-aluminum/dp/B009NESU4M/ref=sr_1_1?ie=UTF8&qid=1429186867&sr=8-1&keywords=aitech+10+port+usb+3.0+hub
3) Use this Supernight power supply to run both the V2 units and the hub. Meanwell brand seems to be the same unit. Some of these don't come with a thermal switch that cycles the fan, so I install one. It cuts down on the fan failures which is a problem with these; I have to replace the fan every six nonths or so. Anyone know of a quality ball-bearing replacement fan that will fit? The stock PS units that come with the v2's are not very stable and get too hot with normal use.
http://www.amazon.com/SUPERNIGHT-Universal-Regulated-Switching-Computer/dp/B009EIANT2/ref=sr_1_4?ie=UTF8&qid=1429186484&sr=8-4&keywords=12v+30a+power+supply
Will be trying 4 more U3's on another similar machine when I get things set up. Will post here how it goes.
Update as promised on running 4 v2 U3 units at once. Machine and setup are as above; running four U3's in the Anker hub, same PS. In a 24-hour period it's common to get at least 1 unit to go zombie. Reset is easy with the Anker hub; no unplug-plugin hassles. One unit seems to slow down to mid-40's GHS from an itnitial 56+. Will crack this one open and check the paste.
A note on the startup sequence of the Anker/Orico/Antec 10-port aluminum hub. Counting 1-to-10 from the plug end of the hub, these have a strange sequence loading ports when turned on. It goes 6-5-10-9-8-7-4-3-1-2. Plugging in the U3's in that order seems to help a lot with stable running.
Have been experimenting with stacking the units and will post some ideas as they are tested. Also plan on using a larger PS to run up to 10 units from one hub in the future. Wish LukeJr would hurry up and post BFGMiner 5.2 as I think the U3's would be quicker and more stable running under a 64-bit program.
Greetings!
I've finally got the Antminer to run on my Raspberry Pi, but it keeps going zombie on CGMiner. The build that Bitmain offers doesn't have this issue on Windows; Is this version also available on Linux? My laptop will run them just fine, it's just bulky as all hell if I try to mine with them on my laptop, and wanted to avoid it if I can.
I've finally got the Antminer to run on my Raspberry Pi, but it keeps going zombie on CGMiner. The build that Bitmain offers doesn't have this issue on Windows; Is this version also available on Linux? My laptop will run them just fine, it's just bulky as all hell if I try to mine with them on my laptop, and wanted to avoid it if I can.
I know, I read that review as well 
But I own a couple of these already and they work great. Thank you for your help.
But I own a couple of these already and they work great. Thank you for your help.
In theory - not sure I'd quite trust that cheap of a supply...and the first review of a burnt-up unit isn't confidence-inspiring - but in theory.
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