Topic: GekkoScience Compac BM1384 Stickminer Official Support Thread - page 79. (Read 268015 times)

for those overclocking this sticks, anyone had a runaway? aka, it spitting all the hashing output blue light just flashing as if its doing 10 sticks, causing rejects and hardware errors ontop of actual accepted hashes? my stick went nuts hashing about 125-130GH/s then CGMiner dropped it, it seems to happen when I hit the 400MHz..

i attempted to get a screenshot of it happening, but i got it when it was going at 47GH/s.. none the less, the blue light was just going nuts ..

Thanks Rich that looks more like it .

Just re-tested and the voltage between the gnd and vcore pads is actually 0.72v.

The spreadsheet is expecting to see the ASIC current which there is no easy way to measure. You have entered the USB current and in that case the only sensible thing to multiply it by is the USB voltage which will give a measurement of the wattage of the complete stick.

Rich

Ok great, multimeter shows 0.69v between gnd and vcore pads.

USB meter shows 4.89v and 1.4a to stick.

Frequency is 300MHz.

If I enter these figures it doesn't look right.

It looks like the 1.4a the USB meter shows is incorrect compared to the other readings in your table.

Is there a way to get the amps from the stick using probes on a multimeter?

Can you tell I dont do this type of stuff for a living .

just clic the cell  and enter the value

Core voltage is mesured between ground and Vcore pads

I never knew that, thanks for the info .

Default with no command line options is 225, which I believe pulls more that 0.5A so verify your usb port can supply enough power.

I'll try, I've not used a google spreadsheet before. In fact I've not used a spreadsheet since I left college nearly 20 years ago .

How do you find the core voltage, the 4.9 my meter shows looks way too high to be the core voltage?


This is my cgminer .bat file @300MHz, you can change that to what you like:

cgminer -o stratum+tcp://solo.ckpool.org:3333 -u 1JiWuyX94wrCr7JhkAn7x5qNMCEef1KhqX.hedgy73stick --compac-freq 300 --suggest-diff 30

EDIT: I'm sure default is 150 which should give 8GH and doesn't require any additional cooling unless its very hot where you are I suppose.

Running with too high a voltage will do no harm, except that it is less efficient and will run hotter than necessary. At 225MHz 650mV should be enough, but you have to adjust each stick individually. It is however best to start with a higher voltage and turn down as otherwise there will be a lot of errors or you may not hash at all.

Rich

When I run default with all the Compac:

win10 64bit or linux latest
cgminer -o stratum+tcp://xxxxxx -u x -p x

they always run 225 MHz 775 mV

Is that too much?

Do I need manually tune them down?
I wonder why default settings is so high?!

can you update my BM1384 spreadsheet with your findings ?

here

You should be fine then, even if it's all standing on something non flammable that would be a good start .

I'm not sure what that means, have you tried adjusting the voltage?


As with any electrical equipment you need to be cautious. These hubs weren't necessarily designed to be running power hungry (for USB anyway) devices 24/7. I have my hubs running on the top of a metal filing cabinet rather than anything flammable like wooden shelves for obvious reasons.

Any mining hardware is a fire hazard even back to the days of cpu's and gpu's being run at or beyond their limits 24/7.

To try and be as safe as possible I bought the most powerful branded hubs (Anker + Orico) I could find with the assumption they would be better quality / safer.

I also feel the power packs, hubs themselves and cables etc. on a fairly regular basis to check none of it's getting too hot. Also have whatever you can on fire resistant surfaces like tiled floor, metal etc. rather than on flammable materials such as wood or paper.

A fire alarm in the same room is also a good idea.

I've never heard of a bitcoin miner actually catching fire especially a USB one as there's nothing to burn (I know there were issues with the Asicminer Prismas, not sure if they just smoked or actually caught fire though). I know a big mining farm caught fire but not sure if that was a miner or wiring that caused the problem.

So all in all use common sense and I think it would highly unlikely the stick would burn but the hub is the weak link so dont push it too hard or have it standing on or near anything that could catch fire if it did.

The only way to be completely on the safe side is to turn them off when you go to bed or leave the house and just have them running when you're home and nearby.

when I connect him to linux

it shows this:
it like it keep disconnecting
so i am thinking not enough power but i unplug everything else it still doing same.

So seems this one unit cant keep connection it keep getting disconnected.
what can be ?!

: cp210x 5-2:1.0: cp210x converter detected
Dec 14 15:55:55 demo kernel: usb 5-2: reset full speed USB device using uhci_hcd and address 3
Dec 14 15:55:55 demo kernel: usb 5-2: cp210x converter now attached to ttyUSB0
Dec 14 15:56:01 demo kernel: cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
Dec 14 15:56:01 demo kernel: cp210x 5-2:1.0: device disconnected
Dec 14 15:56:01 demo kernel: cp210x 5-2:1.0: cp210x converter detected
Dec 14 15:56:01 demo kernel: usb 5-2: reset full speed USB device using uhci_hcd and address 3
Dec 14 15:56:01 demo kernel: usb 5-2: cp210x converter now attached to ttyUSB0
Dec 14 15:56:02 demo kernel: cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
Dec 14 15:56:02 demo kernel: cp210x 5-2:1.0: device disconnected
Dec 14 15:56:05 demo kernel: cp210x 5-2:1.0: cp210x converter detected
Dec 14 15:56:05 demo kernel: usb 5-2: reset full speed USB device using uhci_hcd and address 3
Dec 14 15:56:05 demo kernel: usb 5-2: cp210x converter now attached to ttyUSB0

Bastard child makes me laugh thats a funny thing to call a usb miner .

Have you tried adjusting the pot / screw to adjust the voltage? Perhaps its not set right? Try setting it the same as your other ones.

so i just left bastard child in and after like 10-20 mins it suddenly started mining in cgminer ?!

So let see next time i take it out and in what happens.

i try everything i go in registry
HKEY_LOCAL_MACHINE, then SYSTEM, then CurrentControlSet, then Enum
psexec -i -d -s c:\windows\regedit.exe

find device in there and DELETE it and reinstall all

I even compare it to another device that works and they have same driver same setup all look same other one works.

So not sure if this stick defect
There is green light when i plug it in.

I also try on a linux to see if it is damn windows cause it but same
no devices detected

Good idea I was wondering about that...


Oh no... I'm not sure buddy to be honest sorry .

I've got a similar problem with one of my pc's. A USB port on the front was working okay then this morning went to have a change around and nothing. Port wont work to operate the hub at all and I dont know why. Its on Win 7 64 when Win 7 32 pc has worked fine from day 1 with all ports, not sure if its 64 bit thats the problem?

Bastardchild is doing again :-(
Yesterday worked fine.
Then i moved laptop but put in SAME usb port and again no devices found..

I try all device manager uninstall driver
then zadig

roll back driver
then zadig

but still he keep saying
no devices detected

anything else can do it?
It must be windows doing something strange.

i have a nice little fix, Black electric tape. one loop of it around the stick should do.