[Not in Stock - Free Shipping] AntMiner U1 USB STICKS - US/Canada .042 unit

[Idiophone]

Coin sent for 1 unit, PM sent also.  Thanks!

[maverick0]

PM'd for 4 units.

Thanks!

[appleguru]

FYI, I tried overclocking one of my U1's utilizing the resistor mod... I put a 10K 1% resistor in for R2 and a 3.74K 1% resistor in for R1 (both 0603 size).

Using bfgminer, I'm getting terrible hash rates now (and the unit gets much hotter...) doesn't seem like its doing much/anything. Not sure bfgminer is doing the right thing though, because regardless of what I set --set-device ant miner:clock= to, I can't really get (any of) my units to go above ~1.9Gh/s. Even at what should be higher clock rates, I get a pretty stable 1.9Gh/s and no errors. Any tips?

[udaredme]

FYI, I tried overclocking one of my U1's utilizing the resistor mod... I put a 10K 1% resistor in for R2 and a 3.74K 1% resistor in for R1 (both 0603 size).

Using bfgminer, I'm getting terrible hash rates now (and the unit gets much hotter...) doesn't seem like its doing much/anything. Not sure bfgminer is doing the right thing though, because regardless of what I set --set-device ant miner:clock= to, I can't really get (any of) my units to go above ~1.9Gh/s. Even at what should be higher clock rates, I get a pretty stable 1.9Gh/s and no errors. Any tips?

what settings are you using with bfgminer? I havent messed with the resistors yet and im getting a stable 2.0-2.2 gh with no hardware errors with bfgminer. what wattage resistors did you use?

[appleguru]

FYI, I tried overclocking one of my U1's utilizing the resistor mod... I put a 10K 1% resistor in for R2 and a 3.74K 1% resistor in for R1 (both 0603 size).

Using bfgminer, I'm getting terrible hash rates now (and the unit gets much hotter...) doesn't seem like its doing much/anything. Not sure bfgminer is doing the right thing though, because regardless of what I set --set-device ant miner:clock= to, I can't really get (any of) my units to go above ~1.9Gh/s. Even at what should be higher clock rates, I get a pretty stable 1.9Gh/s and no errors. Any tips?

what settings are you using with bfgminer? I havent messed with the resistors yet and im getting a stable 2.0-2.2 gh with no hardware errors with bfgminer. what wattage resistors did you use?

1/10watt iirc? Shouldn't really matter though, not like much current is going through them...

Miner settings:

bfgminer -S antminer:all --set-device antminer:clock=x0A81 -o [mining pool here]

Tried assorted clock speeds... didn't seem to make a difference. I've reverted to the standard 1K resistor in R1 (R2 open) for now; speeds are back to normal. I might try again once I get a better power and cooling solution setup.

[udaredme]

all i have cooling wise is 2 arctic usb fans...no issues at all..give me a few minutes since the significant other wants to see all the super bowl commercials and ill post my bfgminer settings, maybe it will help ya out.

[appleguru]

all i have cooling wise is 2 arctic usb fans...no issues at all..give me a few minutes since the significant other wants to see all the super bowl commercials and ill post my bfgminer settings, maybe it will help ya out.

Thanks... I'm working on this during the actual game, watching the commercials :-P

Turns out since I had a .bfgminer.conf file saved, bfgminer was loading the clock speed that I had set there (x0881) instead of the one I was setting via the command line argument.. .*stupid* (even after removing the configuration file, it tried to then read my .cgminer file.. wash't until I removed both that it respected my command line args)

Now that clock speeds are working as expected, I'll definitely be giving the resistor mod another go. Going to make sure I get some better cooling first though

[udaredme]

bfgminer -o stratum.btcguild.com:3333 -u udaredme_3 -p 12345 -S antminer:all --set-device antiminer:clock=x0981 --icarus-options 115200:2:2

here is my command prompt...running almost 2.2 gh steady with no hardware errors with extra cooling. 

[appleguru]

bfgminer -o stratum.btcguild.com:3333 -u udaredme_3 -p 12345 -S antminer:all --set-device antiminer:clock=x0981 --icarus-options 115200:2:2

here is my command prompt...running almost 2.2 gh steady with no hardware errors with extra cooling. 

Thanks!

(iluvpcs, apologies for hijacking your thread... hopefully others here find this useful though)

Wish I figured all this out before I attempted my resistor modding... Looks like 3 of my 6 miners currently can do 0x0981 without hw errors, and the other 3 can only do 0x0881 without hw errors.

By specifying hardware paths directly I can get two instances of bfgminer running, each with different clock speeds:

(these paths are for os x):

bfgminer -o [mining pool] -S /dev/cu.SLAB_USBtoUART -S /dev/cu.SLAB_USBtoUART15 -S /dev/cu.SLAB_USBtoUART16 --set-device antminer:clock=x0981
bfgminer -o [mining pool] -S /dev/cu.SLAB_USBtoUART21 -S /dev/cu.SLAB_USBtoUART22 -S /dev/cu.SLAB_USBtoUART23 --set-device antminer:clock=x0881

I'll choose one of my '0981' units when I attempt the resistor mod again... and obviously will sort something out RE cooling too.

[udaredme]

[necro_nemesis]

Although your settings are indicating a average hash rate of roughly 2.2 GH/s/unit your settings appear to be resulting in a fairly low efficiency (Efficiency defined as number of shares accepted (multiplied by their difficulty) per 2 KB of bandwidth) and a low percentage of accepted shares with a higher number of rejections than I have experienced. Although I readily got 2.2+ out of my U1's, it took some tweaking to actually get my U1's to perform where it counts. There's a difference of about 4+ GH/s there for your six units. That's like canning two units running at stock frequency.

You may want to start by trying to raise your worker difficulty from 8 to something a little higher.

[udaredme]

Although your settings are indicating a average hash rate of roughly 2.2 GH/s/unit your settings appear to be resulting in a fairly low efficiency (Efficiency defined as number of shares accepted (multiplied by their difficulty) per 2 KB of bandwidth) and a low percentage of accepted shares with a higher number of rejections than I have experienced. Although I readily got 2.2+ out of my U1's, it took some tweaking to actually get my U1's to perform where it counts. There's a difference of about 4+ GH/s there for your six units. That's like canning two units running at stock frequency.

You may want to start by trying to raise your worker difficulty from 8 to something a little higher.

your absolutely right, I just started mining with another pool tonight..been bouncing around comparing settings between a few different pools. The other pools previously i could change worker settings, this one i dont think i can change worker settings.

[necro_nemesis]

Although your settings are indicating a average hash rate of roughly 2.2 GH/s/unit your settings appear to be resulting in a fairly low efficiency (Efficiency defined as number of shares accepted (multiplied by their difficulty) per 2 KB of bandwidth) and a low percentage of accepted shares with a higher number of rejections than I have experienced. Although I readily got 2.2+ out of my U1's, it took some tweaking to actually get my U1's to perform where it counts. There's a difference of about 4+ GH/s there for your six units. That's like canning two units running at stock frequency.

You may want to start by trying to raise your worker difficulty from 8 to something a little higher.

your absolutely right, I just started mining with another pool tonight..been bouncing around comparing settings between a few different pools. The other pools previously i could change worker settings, this one i dont think i can change worker settings.

I believe that to be one aspect but also suspect lingering issues with bfgminer and the U1,  at least this I encountered on my pi miner. Hopefully the latest builds have resolved this. I rectified it with updates and ceased updating with 3.9.0 when the problem disappeared.

FWIW I'm averaging 6.75 avg from 3 U1's and slush pool is telling me I'm just shy of 6 which concurs with bfgminer accepted now.

This isn't hijacking. It's a free thread bump.

[TracerX]

I wish you would have told me the price was going to drop by 20% before I placed my order last night... sheesh   

Did it?  I must be overlooking it, has it not been .053 for a while now?

[sconklin321]

yeah I paid 0.053 iluvpics 2 weeks ago.

[lajz99]

In for another 10-20 if prices go down to beastlymac prices.   

[PaintShopPro6]

Beastlymac's last U1 shipment was 2 weeks late. Each unit was 0.07 each. By the time they arrived in the US, US suppliers were selling in-hands for 0.053.

He probably won't have the same delays this time around, but that is what happened last time. It hurt me to the tune of $500 as I went in for half on 100 units. The delay was not necessarily his fault, but it did happen and I am not sure what steps are being taken the second time around. Shipping from China to AU to US may just increase the chance of delays. Makes some sense.

I have ordered about 75 each from iluvpcs and Canary and both have been absolutely great for US shipments.

[JasonXG]

I think i should buy and sell these things since thats the only way you will make money with this very very slow hashrate junk.

[BrianM49er]

Iluvpcs .... sent you a pm with a question  I would like to order two, see pm sent yesturday

[rwd39]

Paid and sent pm for 2 units.