GekkoScience Compac BM1384 Stickminer Official Support Thread - page 100.

zOU

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The thing is:

It's always the 2 same sticks have HW errors whatever the slot I put them in.

To adjust the knob I have t take them out and use a spare hub to check V.

I do not want to overload the hub, I've tried running all 6 at 0.75 but that was a disaster.
So I set them all at 0.6 and I'm working my way up by 0.1 or 0.05 increments.

One of the 2 culprits works better at 0.59 than 0.64 V.
I found out when I tried lowering V rather than overloading the hub Cheesy

After all, they're all supposed to work fine at 150Mhs/0.55V....
But if I set them like this, cgminer (gekko build) reports them as zombie...

Mikestang

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Quote from: zOU on November 09, 2015, 11:53:46 AM

God these things are fiddly !!

I just spent 2h finely tuning Viltage on one of these to get it stable at 150Mhs.

between the 6, V goes from 0.59 to 0.63 to get them to be stable at stock frequency !

(and 2 of them have quite a lot of HW errors: 27% and 81%.
Ah well.... that's a job for tomorrow :p

I don't think that fine tuning is required. If you see HW errors just turn the knob up until the errors stop. Could it be that you are asking too much of that usb hub?

zOU

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Quote from: abeandund on November 09, 2015, 12:04:04 PM

Very Nice back @zOU. Glad to notice you pulled the compacts over the edge rather than resting the heat sinks directly on the shelf, and upon second look I saw the fan in the picture. You gave me some new ideas.

I've change it since I took the picture, as I wasn't satisfied, the hub is now vertical so airflow on the heatsink is a lot better

(in fact, I tried a dozen possibilities before finding one that satisfied me Cheesy

)

abeandund

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Very Nice back @zOU. Glad to notice you pulled the compacts over the edge rather than resting the heat sinks directly on the shelf, and upon second look I saw the fan in the picture. You gave me some new ideas.

zOU

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God these things are fiddly !!

I just spent 2h finely tuning Viltage on one of these to get it stable at 150Mhs.

between the 6, V goes from 0.59 to 0.63 to get them to be stable at stock frequency !

(and 2 of them have quite a lot of HW errors: 27% and 81%.
Ah well.... that's a job for tomorrow :p

hedgy73

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Quote from: chiguireitor on November 09, 2015, 11:35:14 AM

Quote from: zOU on November 09, 2015, 09:54:33 AM

... (I know I have to clean the floor and put proper shoes)

Proper shoes? you mean, better no shoes?

My wife's got slippers like that

.

chiguireitor

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Coins, Games & Miners

Quote from: zOU on November 09, 2015, 09:54:33 AM

... (I know I have to clean the floor and put proper shoes)

Proper shoes? you mean, better no shoes?

zOU

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so I received my 4 additionnal gekkosticks today from asicpuppy.

After a few hours of fiddling with them, here's the final setup, 6 compac sticks running @150Mhs/0.6V (lot's of HW errors at 0.55V and reset) on a DUB-H7 hub.

I had a lot of issues running at 0.75 and 0.80 @210Mhs (my settings with 2 sticks), so I went back to stock frequency and raised the V to reach stability.

(I know I have to clean the floor and put proper shoes)

zOU

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@abeandund

I've posted pictures here:
https://bitcointalksearch.org/topic/--7216

there's also a close up of my DUB-H7+cooling for the gekko sticks

stef942

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i have similar problem, my stick comes from bitshopper and is working fine at stock frequency and is stable at 12.47 ghs since 2 days, but as soon as i touch the frequency, by any method -- set compac:clock=200 or --set cbm:clock=200 or directly in bfgminer (M + clock speed), hashrate decrease and then stick stop hashing Huh

AJRGale

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Quote from: Jake36 on November 08, 2015, 09:40:55 PM

Quote from: AJRGale on November 08, 2015, 09:03:49 PM

Quote from: AJRGale on November 05, 2015, 07:11:21 PM

Ha! I misinterpreted the use of the pot! the more it faces the USB plug, the more voltage to the ASIC, and here I have 2 of the sticks that just cannot hash it out anymore, I was tunning it to less voltage Cheesy

!! Right, I know what I'm doing when I get home.

Oddly enough, 2 other ones I had issues with, just spitting more HW errors, I turned down the voltage (in light that I was thinking I was turning up the voltage), and 0 HW errors

So, I have 2 oddities, they both start hashing at full speed, then 30 seconds later, one just drops all hashing, the other in 60 odd seconds, dwindles down to 10s of mega-hashes, I've put them to factory set power, left out clock parameters, and they still do the same thing. testing the voltage, Vcore set to 0.7v, 1.8V is 1.8, 3.3 is 3.3 etc..

yeah, I've up the Vcore voltage, still no play. Also tested both on CG and BFG, they both do the same thing.

Wonder if the chip or something in the hub is going, did you try them on a different hub?

yep, and in different systems too

Jake36

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Quote from: AJRGale on November 08, 2015, 09:03:49 PM

Quote from: AJRGale on November 05, 2015, 07:11:21 PM

Ha! I misinterpreted the use of the pot! the more it faces the USB plug, the more voltage to the ASIC, and here I have 2 of the sticks that just cannot hash it out anymore, I was tunning it to less voltage Cheesy

!! Right, I know what I'm doing when I get home.

Oddly enough, 2 other ones I had issues with, just spitting more HW errors, I turned down the voltage (in light that I was thinking I was turning up the voltage), and 0 HW errors

So, I have 2 oddities, they both start hashing at full speed, then 30 seconds later, one just drops all hashing, the other in 60 odd seconds, dwindles down to 10s of mega-hashes, I've put them to factory set power, left out clock parameters, and they still do the same thing. testing the voltage, Vcore set to 0.7v, 1.8V is 1.8, 3.3 is 3.3 etc..

yeah, I've up the Vcore voltage, still no play. Also tested both on CG and BFG, they both do the same thing.

Wonder if the chip or something in the hub is going, did you try them on a different hub?

AJRGale

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Activity: 767

Merit: 500

Quote from: AJRGale on November 05, 2015, 07:11:21 PM

Ha! I misinterpreted the use of the pot! the more it faces the USB plug, the more voltage to the ASIC, and here I have 2 of the sticks that just cannot hash it out anymore, I was tunning it to less voltage Cheesy

!! Right, I know what I'm doing when I get home.

Oddly enough, 2 other ones I had issues with, just spitting more HW errors, I turned down the voltage (in light that I was thinking I was turning up the voltage), and 0 HW errors

So, I have 2 oddities, they both start hashing at full speed, then 30 seconds later, one just drops all hashing, the other in 60 odd seconds, dwindles down to 10s of mega-hashes, I've put them to factory set power, left out clock parameters, and they still do the same thing. testing the voltage, Vcore set to 0.7v, 1.8V is 1.8, 3.3 is 3.3 etc..

yeah, I've up the Vcore voltage, still no play. Also tested both on CG and BFG, they both do the same thing.

zOU

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Thank you.

I thought about wire shelves but if it provides adequate cooling there's no way to control airflow.

I'll probably modify/rebuilt my U3 stand when i'll get the 3 additionnal units I've ordered.

(we're very much off topic :p)

abeandund

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nice use of scrap wood for shelves, very solid looking unit. Why not use a wire closet shelf within the frame instead of lining with boards. You can pick those up on the cheap at any box store or even home improvement. They come in different lengths, but can buy the 6 ft'ers and cut them to length. Advantage is airflow through the shelves, not to mention all the options for running cords and attaching fans.

zOU

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@biodom: that's my plan too if the DUB-H7 doesn't support 6 gekkominers

I will use a spare TP Link UH700 for the sticks in that case

(I also have my eyes on this: http://m.ebay.fr/itm/90W-power-20-port-USB2-0-HUB-USB-HUB-Industrial-grade-HUB-for-Bitcoin-mining-/161705822180?nav=WATCHING_ACTIVE)

I just built a standing shelf for my miners today.(made from spare bits...)

Power on the bottom shelf with a PDU
Miners + RPI on the top shelf (2 holes for power cables)

hedgy73

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Activity: 1414

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Quote from: Biodom on November 08, 2015, 10:12:46 AM

Thanks to everyone who answered my hub/pi noob questions (sorry if I forgot a name)
@irritant
@Jake36
@hurricandave
@hedgy73
@zOU

after reading everything, I conclude that you can probably overclock sticks better on USB 3.0 hub, but Pi does not like it.
So, my plan is the following:

a.buy powered Anker USB 3.0 hub (http://www.amazon.com/Anker-10-Port-Transfer-PowerIQ-Charging/dp/B00VDVCQ84)
b.put sticks into that hub (advantage-it is 5A hub PLUS each stick can use 800/900ma)
c. connect it to a simple non-powered USB 2.0 hub, like this one (http://www.amazon.com/Sabrent-4-Port-Individual-Switches-HB-UMLS/dp/B00BWF5U0M)
d. connect USB 2.0 hub (Sabrent) to raspberry pi.
e. last, but not least, instead of using an ethernet cable to connect to router (or maybe as an option), use Edimax to connect through Wi-Fi:
http://www.amazon.com/gp/product/B003MTTJOY

I just think that USB3 is better powered to drive sticks and if a simple usb2 bridge to pi is Ok, then this setup should work.
The fallback if this doesn't work would be to return Anker and get Etekcity USB 2.0 (4A) or 9-10 ports Orico USB 2.0.

No problem at all, I guess we're all helping each other out here

. I'm probably the same as everyone else, its been such a long time ( years ) since I used a usb miner or bfgminer / cgminer I've had to learn it all again Cheesy

.

Thanks for sharing what you intend to do, please keep us informed if it works alright

.

Biodom

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Activity: 3892

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Thanks to everyone who answered my hub/pi noob questions (sorry if I forgot a name)
@irritant
@Jake36
@hurricandave
@hedgy73
@zOU

after reading everything, I conclude that you can probably overclock sticks better on USB 3.0 hub, but Pi does not like it.
So, my plan is the following:

a.buy powered Anker USB 3.0 hub (http://www.amazon.com/Anker-10-Port-Transfer-PowerIQ-Charging/dp/B00VDVCQ84)
b.put sticks into that hub (advantage-it is 5A hub PLUS each stick can use 800/900ma)
c. connect it to a simple non-powered USB 2.0 hub, like this one (http://www.amazon.com/Sabrent-4-Port-Individual-Switches-HB-UMLS/dp/B00BWF5U0M)
d. connect USB 2.0 hub (Sabrent) to raspberry pi.
e. last, but not least, instead of using an ethernet cable to connect Pi to a router (or maybe as an option), use Edimax to connect through Wi-Fi:
http://www.amazon.com/gp/product/B003MTTJOY

I just think that USB3 is better powered to drive sticks and if a simple usb2 bridge to pi is Ok, then this setup should work.
The fallback if this doesn't work would be to return Anker and get Etekcity USB 2.0 (4A) or 9-10 ports Orico USB 2.0.

hedgy73

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Activity: 1414

Merit: 1077

Quote from: zOU on November 08, 2015, 07:23:21 AM

Quote from: hedgy73 on November 08, 2015, 05:59:00 AM

I wonder if the reason Raspberry Pi's dont like powered USB 3.0 hubs is because all Pi's use USB 2.0?

https://www.raspberrypi.org/documentation/hardware/raspberrypi/usb/README.md

Quote

DEVICES WITH KNOWN ISSUES

1. Interoperability between the Raspberry Pi and USB3.0 hubs
There is an issue with USB3.0 hubs in conjunction with the use of Full- or Low-speed devices (most mice, most keyboards) and the Raspberry Pi. A bug in most USB3.0 hub hardware means that the Raspberry Pi cannot talk to Full- or Low-speed devices connected to a USB3.0 hub.

USB2.0 high-speed devices, including USB2.0 hubs, operate correctly when connected via a USB3.0 hub.

Avoid connecting Low- or Full-speed devices into a USB3.0 hub. As a workaround, plug a USB2.0 hub into the downstream port of the USB3.0 hub and connect the low-speed device, or use a USB2.0 hub between the Pi and the USB3.0 hub, then plug low-speed devices into the USB2.0 hub.

I see now thanks very much

.

I've just found and ordered a USB 2.0 hub I hope will be ok to run 4, 5 or 6 sticks at stock speed and a fan ( Orico 7 port USB 2.0 60w 12v 5A ):

http://www.amazon.co.uk/ORICO-Charging-Adapter-Support-Android/dp/B00U1FZAF4/ref=sr_1_1?s=computers&ie=UTF8&qid=1446985643&sr=1-1&keywords=ORICO+U2BCH7

zOU

hero member

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Merit: 500

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Quote from: hedgy73 on November 08, 2015, 05:59:00 AM

I wonder if the reason Raspberry Pi's dont like powered USB 3.0 hubs is because all Pi's use USB 2.0?

https://www.raspberrypi.org/documentation/hardware/raspberrypi/usb/README.md

Quote

DEVICES WITH KNOWN ISSUES

1. Interoperability between the Raspberry Pi and USB3.0 hubs
There is an issue with USB3.0 hubs in conjunction with the use of Full- or Low-speed devices (most mice, most keyboards) and the Raspberry Pi. A bug in most USB3.0 hub hardware means that the Raspberry Pi cannot talk to Full- or Low-speed devices connected to a USB3.0 hub.

USB2.0 high-speed devices, including USB2.0 hubs, operate correctly when connected via a USB3.0 hub.

Avoid connecting Low- or Full-speed devices into a USB3.0 hub. As a workaround, plug a USB2.0 hub into the downstream port of the USB3.0 hub and connect the low-speed device, or use a USB2.0 hub between the Pi and the USB3.0 hub, then plug low-speed devices into the USB2.0 hub.

Topic: GekkoScience Compac BM1384 Stickminer Official Support Thread - page 100. (Read 268015 times)