ImCrazyOne  nice idea about connecting miner to PC directly.
A simple molex, I like it (sent a tip   )
Much better than the board - to 6 pin - to barrel I had set up.

I've made the first official cgminer release with support for these now (version 4.8.0). It is the same as the last binary I updated in performance but has some cosmetic improvements.

Note that these PSUs are VERY easy to destroy and I highly recommend people do not overvolt them with the provided PSU. Damaging the PSU will likely destroy the U3 as well. I'm not really sure where the fault lies but I suspect the PSUs are dodgy and if you have another power source, use that instead until bitmain can confirm whether there is an issue with the PSU. It wouldn't be the first device they've sold with a dodgy PSU.

Ok, I blew up my power supply If you like this setting don't try it with the original power supply. Now using an XBOX supply. 14A is that enough?

Regards

I just got mine ordered off eBay too and i'm having difficulties.  I was able to get and correctly install the right drivers, but still haven't gotten it to work. I see the command line going around has helped a lot of people...  I hate to ask a total n00b question here, but how and where do I go about entering that command information in CGminer?  I'm not too families with theses things yet, but I've been learning a ton lately and have been controlling my other usb miner with BFGminer on Slush.  Any help greatly appreciated here.

I just have the one miner hooked up to the computer's USB port.  It has never lasted through the night, every morning it is no longer hashing.   Other than today, it's only went Zombie one other time, usually when "it's not hashing" it just sits there showing 120 MH/s or 250 MH/s on cgminer and zero hashrate at the pool.   

Between all the downtime and the low hashrate, I'm averaging 18.33 GH/s per day on this device.

I agree that it sounds like a software issue.  I think the driver and/or the cgminer fork need more work.

EDIT:  Just went ZOMBIE again, right after I made this post.  Restarted cgminer and it never found the device, restarted computer same deal.  Changed the Baud rate from .65 back to 1, ran cgminer, still nothing.  Pulled USB and Power Cord then plugged power then USB back in, ran cgminer again, now is hashing back away at 40 GH/s.   That lasted about 10 minutes.  For some reason, ever since I changed the settings to 0800 and 1306 and .65, it won't run for more than 10 minutes without going zombie, even though I changed the settings back to what it was sort of working on before.  I've just unplugged the miner for now.  I'm going to try and install it on one of my other computers tomorrow to see if that makes a difference before I give up on this device and Bitmain forever.

Using these settings raised my GH/s from 40 to 50 but now I am getting large number of Hardware Errors saying Invalid Nonce.  The vast majority of all frequency settings spit out this same error except for 0755 voltage 0782 freq and 0755 voltage and 0882 freq, but I only get 30 and 40 GH/s on these settings.

Also, I haven't been able to get it to run for more than 12 hours without going ZOMBIE or just sitting there hashing at 250 MH/s.

Any ideas before I just get rid of this thing?

EDIT:  Lasted for a whole 7 minutes at 50 GH/s, now is ZOMBIE.  Going back to the 0755 setting for a whopping 40 GH/s. 

Try this:

I have tired a lot of different setting.  Thanks for all of the advice, but why hasn't Bitman done something, I paid for 63 GH and I am getting at best an average of 7.5.

Since I have two miners, I have tried them both with the same results,



Barbara

Has anyone tried to compile this for 64bit?

I compiled it for 32bit (windows) without issue and the binary works normally. When I try to compile for 64bit (windows) it compiles fine, but the binary crashes with an error messages of "The application was unable to start correctly (0xc000007b)."

Any ideas?

..

Got it, my dlls weren't correct. Make sure you're using the correct dlls if you try to compile 64bit.