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Author Topic: GekkoScience Compac BM1384 Stickminer Official Support Thread  (Read 267684 times)
notlist3d
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August 13, 2016, 10:14:00 PM
 #2181

Anyone thought about doing a mini watercooling set up for the gekkos? I wondered if you could make one that runs off USB power?

It would be a neat project to see for fun with a few gekkos I agree.  Don't know on power as fan's cooling radiator and adding in a pump seems power might not make sense, but still a neat project.   And technically some might be running gekkos at a frequency that don't even need fan's so guess it depends.  I would love to see a OC'ed watercooled one though again just as a neat project.

I personally never intend on doing another water cooled miner the C1's were enough for me (although that was due to company making cooling parts syscooling).  I have used on gaming computer's without issue though.  So can see why some like it but I will be sticking with CFM's from fan's.
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August 13, 2016, 11:03:13 PM
 #2182

That's all I was thinking really. Just another facet to add to the gekkos. I've only got two but would (as you say) be a nice little project. At a decent freq I think the single rad (120mm) would have enough area to provide adequate cooling withou the need for an additional fan.

I've been looking for bits but can't seem to track down water blocks small enough or 5v pumps. I run my gekkos on a pi and would love to power it from that or the powered hub.

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vapourminer
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what is this "brake pedal" you speak of?


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August 13, 2016, 11:42:28 PM
 #2183

Anyone thought about doing a mini watercooling set up for the gekkos? I wondered if you could make one that runs off USB power?

not exactly.

my thoughts are peltier cooling. i have one but do not have the time yet. that dang real life (tm).

12 volts. several amps. LM7805 regulator (yeah im old). 2 fans.  almost as many wires as water  tubes. iow no usb power for this.

but please do keep us informed Smiley
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August 14, 2016, 12:10:22 AM
Last edit: August 14, 2016, 12:24:01 AM by vapourminer
 #2184

Anyone thought about doing a mini watercooling set up for the gekkos? I wondered if you could make one that runs off USB power?

[...]Don't know on power as fan's cooling radiator and adding in a pump seems power might not make sense, but still a neat project. 

[...] but I will be sticking with CFM's from fan's.

i also am sticking with usb fans at the moment. single artic cooling usb powered fan cooling 5 sticks (at 300 mhz i believe) with everything on the superbpag 70 watt hub.

its not running right now as i went on vacation last week and took the 70 watt superbpag hub with me. built in psu. 7 outlets. 2 amps each. and, even a nice carry bag. used it to charge 2 phones, tablet, emergency usb power rechargeable batteries, usb powered rechargeable led lights. hard to beat that piece of kit as it is that useful.

havent even unpacked really. heh love vacations at the ocean.
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August 14, 2016, 12:20:00 AM
 #2185

i personally think you would run out of power from the usb before you need anything more then just a fan on the cooler.
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August 14, 2016, 12:49:50 AM
Last edit: August 14, 2016, 02:16:57 AM by vapourminer
 #2186

i personally think you would run out of power from the usb before you need anything more then just a fan on the cooler.
depends on what you have for usb power.

usb 2.1 is 500 ma i believe. which is 2.5 watts. and thats what the compacs where designed for.

but usb 3.0/3.1 it like 100 watts, but at 05-20 volts i think.something along those lines anyway..
EDIT no, its USB C, see sidehacks correction below
however you need to have the right cables and the usb device needs to speak usb. it needs to ok that much power with the hub/device.
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August 14, 2016, 01:32:22 AM
 #2187

USB3 is 4.5W, 5V 0.9A

USBC is up to 100W, but that's a whole different breed of cat.

And there is no specific "what the compacs were designed for", not really, since you can pull 15W with one if the hub allows. Good mining hubs don't limit you to 500mA anyway, but most good mining hubs could only source about as much power as the Compac can safely dissipate with a good fan. I think that's what he meant.

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August 14, 2016, 01:44:17 AM
Last edit: August 14, 2016, 02:11:50 AM by vapourminer
 #2188

USB3 is 4.5W, 5V 0.9A

USBC is up to 100W, but that's a whole different breed of cat.

And there is no specific "what the compacs were designed for", not really, since you can pull 15W with one if the hub allows. Good mining hubs don't limit you to 500mA anyway, but most good mining hubs could only source about as much power as the Compac can safely dissipate with a good fan. I think that's what he meant.

ah, gotcha. my mistake.

"never speak for another person " as dad says.

but i thought, out of the box, that 500ma in a bog standard usb 2 port could run a bone stock compac with absolutely no problem. no special command line switches. no current problem. no additional cooling. thats what i meant by "what the compacs were designed for." i thank you for your correction.

i do know they were built for WAY more than that heh.

"if its worth doing, its worth overdoing"  -ayn rand?
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August 14, 2016, 02:13:50 AM
 #2189

Actually the stock setting depends on your software. I think our cgminer defaults to 150MHz, but BFG defaults to something like 225MHz. You actually have to turn the voltage down a bit from stock to get 500mA draw at 150MHz but it's close.

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August 15, 2016, 08:23:04 PM
 #2190

I'm seriously looking into doing a little water cooling setup for my two gekkos. I've seen a couple of videos of people water cooling raspberry pis so it's definitely do-able although still not found a USB pump yet.

What I need to know is the size of the chip. I've looked at the data sheet and it said 8 bsc. Is that 8mm? I can get a small water block that's 15mm square but the heatsink on the bitshopper gekko is 24mm square. Do you guys think a 15mm waterblock would be sufficient surface area?

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sidehack
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August 15, 2016, 08:35:06 PM
 #2191

Yeah, the chip is 8mm per side. Somewhere in this thread I posted the mechanical specs for the heatsink if you want to know screw positions or anything.

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August 15, 2016, 09:14:09 PM
 #2192

Do you guys think a 15mm waterblock would be sufficient surface area?
I think it's sufficient. Make sure you use a good thermal adhesive tape. The EU versions used the insulating 3M 8810 with a ceramic core. I PMed you a drawing with the screw positions.
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August 15, 2016, 09:30:10 PM
 #2193

Do you guys think a 15mm waterblock would be sufficient surface area?
I think it's sufficient. Make sure you use a good thermal adhesive tape. The EU versions used the insulating 3M 8810 with a ceramic core. I PMed you a drawing with the screw positions.
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Yeah, the chip is 8mm per side. Somewhere in this thread I posted the mechanical specs for the heatsink if you want to know screw positions or anything.

Thank you guys. I'll take a look at the details and see what I come up with. This is all subject to cost at the moment though   Undecided

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August 15, 2016, 09:55:58 PM
 #2194

Unless I have good reason not to, I'm assuming to use the same heatsinks/screws on future versions with new chips so a setup built for BM1384 Compacs should work on newer ones too.

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August 15, 2016, 10:09:19 PM
 #2195

I'm waiting for an email back from bitshopper, hopefully they'll have a look at it for me..
Sorry for the late reply. Summer vacation time...   Roll Eyes
I'll take care...
Alread responded to your E-Mail.

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August 16, 2016, 01:42:02 AM
 #2196

Hey all... A little new to the bitmining world but so far I am having a blast... I bought a Gekko and had fun getting it up to 11Gh/s so I bought 3 more and a usb 3.0 hub.. a (Tendak 7 port) I set it all up I got cgiminer to recognize all 4 sticks and I attempted to go to 200mhz but was getting tons of hardware errors... I then went to 150 and seemed fine but each stick is only getting 5Gh/s.... So I just used one stick on port at 225 and it went to 14Gh/s no errors... I then tried to switch to a Saberent 9 port usb 3.0 hub because the power supply was bigger... but same results.. I am really not to familiar but does this have to do with adjusting voltage? If so do I go up or down and how does that work... Also for the record I have two fans running on them...

Any insight would be great!!

Edit: Running on a Windows 10 machine.
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August 16, 2016, 02:02:45 AM
 #2197

Have you looked at the troubleshooting section in the first post of this thread?

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August 16, 2016, 02:13:22 AM
 #2198

Have you looked at the troubleshooting section in the first post of this thread?

Indeed I just guess I was hoping for a confirmation on trying to raise the voltage on the stick....
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August 16, 2016, 02:29:11 AM
 #2199

If they're US green-heatsink sticks, you should have no trouble hitting 200MHz at stock voltage unless they were bought used from someone in which case they could be set who knows where. If one stick works fine but multiple sticks does not, I would doubt the strength of your hub.

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Server PSU interface boards and cables. USB and small-scale miners. Hardware hosting, advice and odd-jobs. Supporting the home miner community since 2013 - http://www.gekkoscience.com
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August 16, 2016, 02:33:40 AM
 #2200

If they're US green-heatsink sticks, you should have no trouble hitting 200MHz at stock voltage unless they were bought used from someone in which case they could be set who knows where. If one stick works fine but multiple sticks does not, I would doubt the strength of your hub.

Great information! Thanks... any suggestions a hub you are confident that works with it?

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