I need help setting up a lketc usb scrypt 220kH miner. I bought it together with an Antminer U1 to test stuff and gain experience. The U1, I got to work with cgminer from Bitmain website without any problems.

The lktec starts heating up as soon as it's plugged in and blinking green. The instructions I got, from the webshop - the official website I found nothing - are terrible. They offer a windows client that fails with errors such as 'ICA0: invalid nonce - HW error'. When I try to use the cgminer.exe lketc supplied with the USB stick (in a cmd line), it complains about noy knowing how to find any devices. I tried fiddling with the -d flag, but nothing worked.

I think it's an icarus chip, but for what I was able to read, the icarus-specific parameters I can set in the cmd line all have defaults and should work implicitly.

Anyone has experience with this? If another miner works better, I'm ok with it ^^

Thanks.

It already resets some devices ... something that you'll find non-USB mining software doesn't do.

But it can't physically pull the miner out and plug it back in.
Physically unplugging it acts like a hardware reset coz the miner itself is not very well designed or made on the cheap.

An example of one that works with zombies is the hashfast hardware ... oh well.

It's working great!!!
I even have an increase in performance from my even more dated hardware!!

 Thank you!!

You will melt the factory psu with those settings, be sure to use an adequate psu.

Tried, nothing has changed. I may be incorrectly configured cgminer?   ./configure --enable-icarus

Sorry if this has been covered before, but I can't seem to find anything and I am at my wit's end. I'm trying to set up 2 Antminer U2s on Windows 7. When I run cgminer with proper settings, I get one green light flashing on the device and no feedback in the command prompt other than that it couldn't find any devices. Sometimes, if I unplug and plug back in, I'll get the miners mining and it's really lucky for me to unplug the two and have both working when I plug back in. When I do 'List all devices' I get:

[timestamp] USB init, open device failed, err -3 you don't have privileges to access - AMU device 2:4
[timestamp] See README file included for help
[timestamp] Icarus detect <2:4> failed to initialise <incorrect device?>

Those 3 messages refresh every few seconds. Any help would be greatly appreciated.

So I tried 4.9.0 and had much more success!  There may be some sort of bug with 4.9.1 and the U3.
But now I am at another hurdle.  Here's what happens with 4.9.0:

Started cgminer 4.9.1
Probing for an alive pool
Waiting for work to be available from pools.

Then is just quits back to the command line after sitting there a minute.  This is exactly how far I got with my Cryptorig Hitchhiker usb stick (Bitfury ASIC, same chip used in red fury, blue fury) which I posted about in the ckpool thread.

Following advice in that thread, I ping'd solo.ckpool.org successfully, however, telnet solo.ckpool.org 3333 resulted in Connection Failed, could not open connection to the host on port 3333.  So probably some sort of firewall issue on my end?  Any idea what I need to do to successfully connect to port 3333, do I need to open that port on my firewall as well?  Seems like once I figure this out I'm home free (with both miners), just have to use 4.9.0 with the U3.

Thanks, I will try that, too.  So far no amount of restarting, replugging, or re-drivering has had any effect.  I'm booting up an old laptop to see if I have any luck with another computer.



EDIT

Ok, here's the result, looks good to me (?).

USB all: found 6 devices - listing known devices
.USB dev 0: Bus 1 Device 1 ID 10c4:ea60
  Manufacturer: 'Silicon Labs'
  Product: 'CP2102 USB to UART Bridge Controller'
1 known USB devices