Topic: Bitmain AntMiner U1 Tips & Tricks - page 25. (Read 106810 times)

Yeah, it doesn't make a whole lot of sense!!
I also unplugged my LCD display this morning to see if that makes a difference (also because my GF wasn't particularly happy with my dodgy soldering being plugged in 24/7!!)

@cs2000

The cron jobs are nice to have, but it looks like watchdog is the one that's helping me out the most, so I'd definitely advise trying that out.
Just Google "watchdog raspberry pi" and you'll find a few tutorials. Instead of using 1 min/24 load, I changed mine to 5 min/70 load.
I've now been mining for about 18 hours with 2 auto reboots thanks to Watchdog.

An alternative is to cut the red wire in the usb cable between the pi and your hub.  That too will prevent any power fluctuations from your hubs from reaching your pi.  Be sure to leave the other three wires intact.

Interesting... I might take a look into that at some point. Currently using a spare Blackberry charger (0.7a) for the Pi, which has always worked fine when running them headless.
Watchdog seemed to catch a lockup earlier on today and automatically restart, so as a short term workaround it definitely seems to be worth trying that. (I've set it restart if load is over 70 for 5 mins)
I've also set up a cron job to ping my router and restart the Pi if that fails, and one to check if a cgminer process is running and restart if not... Quite a lot of effort, but it seems to be working OK so far

I used to get lockup and dropout problems with my pi which I eventually solved by buffering the power through an extra usb hub which has no usb sticks in it.

So I now have a powered Plugable 7 port hub plugged into the pi and the pi takes it's power from a USB port on that.

Then I have several powered D-Link 7 port hubs plugged into the Plugable hub, with all the usb sticks plugged into them.

I believe this prevents any power fluctuations from the D-Link hubs reaching the pi through upstream power connections.

Whatever it does, it seems to work.

I have had trouble with a pi, basically high usb traffic can cause the ethernet controler to drop out. I have a 20 port usb 2 hub plugged into the pi, and it will run for a while then randomly the ethernet driver starts getting errors and drops out.

This is a known issue with the pi, something to do with voltage drops. In any event i ended up using a spare old pc and throwing centos on it. USB issues gone

Ive tried doing firmware updates on the pi, and there is a kernel boot option for the nic but these make no difference.

I uninstalled driver from devices/printers menu. Reboot Windows then plug back my Antminer. It will reinstall SIlabs drivers.

Then run this command line :

bfgminer.exe --set-device antminer:freq=0981 -o http://stratum.bitcoin.cz:3333 -O User:Pass -S antminer:all

It works but can't overclock right now. Trying to figure that out... Some got it working with Win7 X86. I have win7x64.

I'm pretty new so I might have done some mistakes.

Good Luck!

Can someone please explain how to use bfgminer with antminer?
I have the  nwools version, but it just dodnt find any device.
I deinstalled ZADIG drivers and only sintall the SILabs serial drivers

ok
New results from  overclocking attempts:

I upgraded my 4 Anminers with 10K and 2.5K  Resistors, and  connected only one antminer first.
Finaly i  managed to  get  very stable 2,4-2,5 GHS from one miner.
The overclocking procedure is not straight forward.

The antminer SilLab microcontroller seems to store some kind of calibration table  , which he uses to control PWM of the DC/DC converter and adjust the voltage for  TXO ( Frequency).
After you change the voltage output of the DC/DC converter those calibration values didn't match with reality, so you just cant start with high frequencies, the error is too high.
Instead start with  lowers  GHS possible: 1.4 GHS.
Wait until it stabilize, and increase the frequency by one value.
Step by step I managed to run Antimner at  0B81, which gave me about 2,5 GHS.

After i plugged the second  calibrated miner into USB3.0 HUB (4A max), the speed of the 1st miner  gone to 2.1 GHS, and the second  one gave 1.9 GHS.  The third miner just gone zombie...
Seems like there is not enough  power? But funny enough I got the same 2.5 GHS result from  USB2.0 PC port.... so current shouldn't be a problem here, probably....

I am, not quite sure WTF is wrong with AntimnerU1. Maybe some kind of connection/synchronisation errors with cgminer...


I tried to run  BFG miner, but it couldnt find any device at all....even after i deinstall zadig drivers.
Moreover CGMINER cant find a device directly from USB3.0 (my USB3.0 hub is connected to the USB2.0 Port) port.


I will purchase a PCI USB2.0 extension card with separate powersupply from the main PSU. Costs only 10 Euro, so i give it a try, in case there is not enough  current...

I did some testing with comments you made.

One Antminer had hw error around 20% with cgminer and the other barely nothing.

I tried removing and replugging the one with high hw rate and it did not change.

Then, switch to a powered usb hub, same result after 12H.

This morning switch to bcgminer, up to now (for 20 minutes) I have overall 4.02 - 3.91 - 3.17GH/s HW : 2/ .23%.

It seems the OC does not work.

Here is my command line in win7 64bit :

C:\Bfgminer\bfgminer.exe --set-device antminer:freq=0981 -o http://stratum.bitcoin.cz:3333 -O User:Pass -S antminer:all


@anw : Which link did you use to get the bfgminer? And what is your command line?

Thanks!