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Re: Now that usb sticks are being sold by sidehack here is a new usb hub thread.
by
lanegg
on 03/04/2017, 21:12:29 UTC

I don't have good pictures yet. I'm still building it lol. Basically I "upgrade" the usb cable and then solder all 5 18ga wires from a "group" of miners to a single 16ga wire that i then run to the power supply. No distributions blocks just lots of solder and tape Smiley


Ratrod modding. I love it!
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Re: Now that usb sticks are being sold by sidehack here is a new usb hub thread.
by
lanegg
on 03/04/2017, 21:03:08 UTC
yep it goes thinner as it gets to the female end. the usb cables i use are 28awg data and 24 awg power.
basic wire thickness from the power supply is ... meanwell  -> 16awg -> 18awg -> 24awg

Where do you do the split from 16awg to 18awg? I didn't see a distribution block in your pictures, is there one just off screen somewhere?
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Re: Now that usb sticks are being sold by sidehack here is a new usb hub thread.
by
lanegg
on 03/04/2017, 20:50:09 UTC
Thanks!

So now I just "upgrade" usb cables by cutting the power from the hub side, solder in 18awg wire powered from the meanwell.
and stick em in a plastic holder

So for the last few inches/cm before terminating in the female plug you are running the thinner wire? What's the max amperage you have pushed through the connectors?
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Re: Now that usb sticks are being sold by sidehack here is a new usb hub thread.
by
lanegg
on 03/04/2017, 19:33:37 UTC
Going along with hurricandave's suggestion of custom usb cables. I'm working on version 2 now, going straight to the jack this time. I hope I can cut down the power usage a little.

http://i.imgur.com/yX0uaBf.jpg

So you're running the beefy (24ga?) wires from power supply to the two outer posts on the USB connector and then the two inner data wires to the USB hub? Do the male plugs that go to the USB hub only have data +/- connected, do are you doing something with the 5v from that bus, too?

Would you mind providing a closer image of where the female ports connect to the wood supports?

I like this idea and may "borrow" it if that's okay with you...
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Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 04:19:26 UTC
Quote
My 2c: don't run multiple sticks at above 200-250mhz. the table shows that 250 mhz is already exceeding superpag's 2A/slot.

If you look at the specs (according to Amazon, so I guess a grain of salt) each port should actually support 2.4A/slot. That means (in theory) we should be able to go up to 275Mhz. Of course this assumes that the hubs can handle 100% load all the time...
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Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 04:14:59 UTC
see my edited post (use Y-cables)

You mean like these:

https://www.amazon.com/HIGHROCK-Enhancer-Female-Charge-Extension/dp/B00NIGO4NM

The idea being to split the amp load over two ports?
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Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 04:05:26 UTC
the typical "brick" functionality is inside the hub/Superbpag.
there is no external "brick".
My 2c: don't run multiple sticks at above 200mhz.

Is there an alternative hub solution? All the ones I have seen can't support the amperage for the 2Pacs.
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Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 03:59:21 UTC
Direct plug no external brick correct?

Correct. Retail box contains just the hub, a USB cable, and a two prong wire for power.
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Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 03:47:47 UTC
read the brick specs  not the hub specs..

I believe the hub  can do 70 watts  but not the brick ( many  have burnt this out)

look at the brick numbers  amps and volts.

I'm not sure what you mean by "brick". Do you mean like a laptop power brick? If so it doesn't come with one. All it has is a two prong wire that goes to the wall (or in my case a UPS outlet). The only specs I see on it are the same as what's in the Amazon specs. The unit has power since the 2Pac's green lights do light up.

I'm in agreement with the hub being toast, I am just trying to figure out if I got a defective one and should exchange it or look for an alternative. All the specs I have seen say this hub should well support what the 2Pac's require.
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Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 03:24:31 UTC

you may have killed it.


try 1 stick at freq 100 directly to the pi

see if it runs.


Yep, it does.

Quote
4 sticks on that hub is a lot of juice.

can you read the brick specs.

1  stick will pull 10 watts at  freq 200


so if the brick reads 5v volts and 14 amps

 it should be okay,

but if the brick reads 5 amps and 12 volts   

some math 5 x 12 = 60  convert to 5v   means 60 x .85 =  51 watts   that is 12 to 5 volt


 so 4 sticks at freq  200  = 10 watts x 4 = 40 watts



so you have a 51 watts brick maybe ?  well    seems good    24/7/365 means derate by 80%  so 51 x 80% = 40.8 watts

so four sticks at freq 200  is pushing the brick hard  as 40.8 is close to 40

and freq 250 would be over use of power.

I believe you killed off the brick..


Those hubs are supposed to good for 14A and 70 watts. By your math I should be in the green, right? Is there a better alternative that others are using? I have seen people referencing other hubs but all the ones I have seen for sale seem really low on amperage for what the 2Pacs call for (they seem to be aimed at the first-gen eruptors).
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Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 03:02:21 UTC
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Board Hardware
Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 02:43:12 UTC
run 1 stick at freq 150

No difference:

Code:
pi@pihole:~ $ ps -aux | grep cgm
root       432 88.4  0.6  98668  6608 ?        Spi         928  0.0  0.1   4280  1824 pts/0    S+   22:41   0:00 grep --color=auto cgm
pi@pihole:~ $

The heatsink is warming up but there are no blue lights and nothing is being reported to the pool.

Edit:

Found this in /var/log/syslog:

Apr  2 22:40:59 pihole systemd[1]: Started Session c3 of user pi.
Apr  2 22:42:03 pihole kernel: [  106.095584] usb 1-1.3: new full-speed USB device number 4 using dwc_otg
Apr  2 22:42:03 pihole kernel: [  106.175584] usb 1-1.3: device descriptor read/64, error -32
Apr  2 22:42:04 pihole kernel: [  106.365945] usb 1-1.3: device descriptor read/64, error -32
Apr  2 22:42:04 pihole kernel: [  106.555569] usb 1-1.3: new full-speed USB device number 5 using dwc_otg
Apr  2 22:42:04 pihole kernel: [  106.635581] usb 1-1.3: device descriptor read/64, error -32

And this in /var/log/message:

Apr  2 22:40:43 pihole org.gtk.Private.AfcVolumeMonitor[737]: Volume monitor alive
Apr  2 22:42:03 pihole kernel: [  106.095584] usb 1-1.3: new full-speed USB device number 4 using dwc_otg
Apr  2 22:42:04 pihole kernel: [  106.555569] usb 1-1.3: new full-speed USB device number 5 using dwc_otg
pi@pihole:~ $


Post
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Board Hardware
Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 02:21:43 UTC
I have one 2pac (out of 20) that when i plug in hashes fine for a while but then goes zombie.  the /var/log/messages and /var/log/syslog just keep showing cp210x converter detected , cp210x converter attached , cp210x converter disconnected. over and over until it crashes my raspberry pi (aprox every 6-10 hours) I have tried different ports and voltages but nothing. The fact that I have 19 others hashing away fine leads me to believe it's the stick but I want ask officially before i bug sidehack (again) Sad

We are having similar issues. I have four devices that on the surface appeared to be working but I too would have random crashes on my Pi that would require a hard power cycle (I mentioned this earlier in the thread but I figured it was something I borked so I let it drop). Now suddenly all four of my sticks won't start processing and looking through the log files you mention above I see very similar messages in the logs.

Code:
Apr  2 22:00:31 pihole kernel: [  931.948102] usbserial: USB Serial support registered for generic
Apr  2 22:00:31 pihole kernel: [  931.953159] usbcore: registered new interface driver cp210x
Apr  2 22:00:31 pihole kernel: [  931.953445] usbserial: USB Serial support registered for cp210x
Apr  2 22:00:31 pihole kernel: [  931.953788] cp210x 1-1.2.1:1.0: cp210x converter detected
Apr  2 22:00:31 pihole kernel: [  931.954541] usb 1-1.2.1: cp210x converter now attached to ttyUSB0
Apr  2 22:00:31 pihole kernel: [  931.954732] cp210x 1-1.2.3:1.0: cp210x converter detected
Apr  2 22:00:31 pihole kernel: [  931.955378] usb 1-1.2.3: cp210x converter now attached to ttyUSB1
Apr  2 22:00:31 pihole kernel: [  931.955599] cp210x 1-1.2.4.1:1.0: cp210x converter detected
Apr  2 22:00:31 pihole kernel: [  931.956909] usb 1-1.2.4.1: cp210x converter now attached to ttyUSB2
Apr  2 22:00:31 pihole kernel: [  931.957103] cp210x 1-1.2.4.3:1.0: cp210x converter detected
Apr  2 22:00:31 pihole kernel: [  931.962106] usb 1-1.2.4.3: cp210x converter now attached to ttyUSB3
Apr  2 22:00:31 pihole kernel: [  932.389891] cp210x ttyUSB3: cp210x converter now disconnected from ttyUSB3
Apr  2 22:00:31 pihole kernel: [  932.390015] cp210x 1-1.2.4.3:1.0: device disconnected
Apr  2 22:00:31 pihole kernel: [  932.575958] cp210x ttyUSB2: cp210x converter now disconnected from ttyUSB2
Apr  2 22:00:31 pihole kernel: [  932.576083] cp210x 1-1.2.4.1:1.0: device disconnected
Apr  2 22:00:32 pihole kernel: [  932.764863] cp210x ttyUSB1: cp210x converter now disconnected from ttyUSB1
Apr  2 22:00:32 pihole kernel: [  932.764987] cp210x 1-1.2.3:1.0: device disconnected
Apr  2 22:00:32 pihole kernel: [  932.983977] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
Apr  2 22:00:32 pihole kernel: [  932.984098] cp210x 1-1.2.1:1.0: device disconnected
Apr  2 22:02:26 pihole rsyslogd-2007: action 'action 17' suspended, next retry is Sun Apr  2 22:02:56 2017 [try http://www.rsyslog.com/e/2007 ]
Apr  2 22:03:21 pihole kernel: [ 1102.140316] cp210x 1-1.2.4.3:1.0: cp210x converter detected
Apr  2 22:03:21 pihole kernel: [ 1102.141172] usb 1-1.2.4.3: cp210x converter now attached to ttyUSB0
Apr  2 22:03:21 pihole kernel: [ 1102.144290] cp210x 1-1.2.3:1.0: cp210x converter detected
Apr  2 22:03:21 pihole kernel: [ 1102.145092] usb 1-1.2.3: cp210x converter now attached to ttyUSB1
Apr  2 22:03:21 pihole kernel: [ 1102.146084] cp210x 1-1.2.1:1.0: cp210x converter detected
Apr  2 22:03:21 pihole kernel: [ 1102.147339] usb 1-1.2.1: cp210x converter now attached to ttyUSB2
Apr  2 22:03:21 pihole kernel: [ 1102.150360] cp210x 1-1.2.4.1:1.0: cp210x converter detected
Apr  2 22:03:21 pihole kernel: [ 1102.151134] usb 1-1.2.4.1: cp210x converter now attached to ttyUSB3
Apr  2 22:03:21 pihole rsyslogd-2007: action 'action 17' suspended, next retry is Sun Apr  2 22:03:51 2017 [try http://www.rsyslog.com/e/2007 ]

I don't think the sticks are bad, but there is definitely something not right.
Post
Topic
Board Hardware
Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 03/04/2017, 02:11:20 UTC
All four of my 2Pac's won't stay mining suddenly. Earlier this afternoon they were working fine. Left for some dinner and came home and now they aren't detected by cgminer.

I can connect to the Pi and have tried turning everything off, disconnecting them from each other, and turning them back on. I turned off the cooling fan and I can feel heat on the heat sinks building. It has been my experience that if cgminer isn't running there shouldn't be any heat coming in heat sinks. I have green lights on everything but no blue flashes.

I did get the boards to start churning numbers once after rebooting everything. They hashed for about a minute, maybe two, then shut down again. This appears to be a fluke as I have tried again a couple without being able to replicate.

Any idea of where start looking?

Here is what I see if I start cgminer by hand (I usually start it from /etc/rc.local).

Code:
cgminer version 4.10.0 - Started: [2017-04-02 21:51:17.058]
--------------------------------------------------------------------------------
 (5s):0.000 (1m):0.000 (5m):0.000 (15m):0.000 (avg):0.000h/s
 A:0  R:2048  HW:0  WU:0.0/m
 Connected to us-east.stratum.slushpool.com diff 2.05K with stratum as user lanegg.worker1
 Block: 106a502d...  Diff:500G  Started: [21:51:17.060]  Best share: 0
--------------------------------------------------------------------------------
 [U]SB management [P]ool management [S]ettings [D]isplay options [Q]uit
--------------------------------------------------------------------------------
 [2017-04-02 21:51:15.887] Started cgminer 4.10.0
 [2017-04-02 21:51:16.055] No devices detected!
 [2017-04-02 21:51:16.056] Waiting for USB hotplug devices or press q to quit
 [2017-04-02 21:51:16.058] Probing for an alive pool
 [2017-04-02 21:51:16.624] Pool 0 difficulty changed to 2048
 [2017-04-02 21:51:16.704] Rejected untracked stratum share from pool 0
 [2017-04-02 21:51:17.060] Network diff set to 500G
Post
Topic
Board Hardware
Re: Who likes pod miners?
by
lanegg
on 28/03/2017, 20:14:04 UTC
interesting, however, an enclosure might trap heat dissipating by fins, so maybe enclosure around PCB with fins protruding out?
then, it would look similar to some graphic cards.
heck, maybe, once he switches to BF chips, one can envision a "hanging" design similar to what people do with GPUs on metal racks.
then, a big fan could take care of a multitude.

I am working on something now for stacking two or four Superbpag hubs side by side and mounting a 80mm or 120mm case fan on top of them (the image below is for the four hub version). I was sort envisioning something similar for the pods (although oriented differently to account for the second heat sink). The idea being by forcing the air to flow across the heat sinks instead of just flowing in the general direction of the heat sinks we can get better cooling.

http://imgur.com/ze8Q6RE

For those not grasping the idea behind the image, there will be four hubs side by side with 2Pac's in each hub. The body shown in the image is looking from the top through to the bottom. The body will sit on top of the hubs with each of the 2Pac's in their respective walled off area. The bottom is open and there will be a fan on top so air will be pulled from the bottom to the top. There will be an unpictured body that goes on the bottom that will support each of the USB hubs and keep them in place and provide support for the pictured body. I am still early in the design phase so it may be hard to envision.
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Re: Who likes pod miners?
by
lanegg
on 28/03/2017, 19:21:19 UTC
Not sure exactly what you're asking for. If you want the PCB layout, no because I make and sell these things for a living and I'm not giving that away. If you want a 3D mechanical something-or-other, I don't have that. I'm very pencil-and-paper. I can tell you it's a four-inch-square 1/16" thick slab.

No, not anything proprietary. The mechanical drawing would have been enough if it was an option. I was mainly wanting to get the dimensions for the cap and anything on the other side of the heat sinks that aren't in the picture. That way I could come up with some sort of air duct system/stand for the pods and know what sort of clearances I had to work with. I might be able to come up with something based off the specs you gave me.
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Re: Who likes pod miners?
by
lanegg
on 28/03/2017, 19:07:05 UTC
There isn't a lot of room for mounting holes. You can't really see it from the picture but the board's fairly busy. Maybe we can do something clever with stick-on rubber feet?

I've got a 3D printer and a half-assed understanding of most things. If you send me the CAD files of the PCB I can try to whip something up. PM me if you're interested.
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Re: Who likes pod miners?
by
lanegg
on 28/03/2017, 18:29:06 UTC
Nice! Will the PCB have mounting holes pre-drilled/cut, or is the intent to have one of the heat sinks sitting on the table?
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Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 28/03/2017, 17:02:21 UTC
I can't wait to get my hands on the pod  since that will be better then what I am getting at 75watts.

Is there a thread for the pod? I have seen numerous references to it and am intrigued.
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Topic
Board Hardware
Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
lanegg
on 27/03/2017, 22:30:15 UTC
Also PCBs are made from fiberglass, so if there's silicon around the chips something is terribly wrong because only the chip die itself, nestled inside the IC package, is silicon.

The thermal paste is Arctic Alumina, nonconductive ceramic thermal compound.

I only play an engineer on TV. Thanks for keeping me honest. Cheesy