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Author Topic: GekkoScience is now dabbling with 16nm ASICs for new designs  (Read 75917 times)
ZACHM
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January 04, 2017, 02:49:54 PM
 #521

Understood. Thank You!

So the 2Pacs should be essentially plug and play into an existing setup using Compacs?
Just swap out the current cgminer-gekko with the new cgminer-vhVersion?

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sidehack
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January 04, 2017, 02:54:12 PM
 #522

If everything works as expected, yes that's the plan. The actual interface on Compac, 2Pac and Biggie are pretty much the same so VH's cgminer should be forward-compatible with the Biggie as well, though there may be some tweaks once the Biggie is actually rolled out.

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January 04, 2017, 03:06:15 PM
 #523

I know I'm asking a lot of questions but...

Do you have side by side picture of a Compac and 2Pac?
Or the dimensions of the 2Pac?

Being that it has the same heatsink, it looks like they are the same overall size with the heatsink the same distance from the USB plug? So when a Compac and 2Pac are plugged in next to each other they would look the same? Other than the pcb goes all the way to the top of the heatsink on the 2Pacs.

I'm just trying to plan out my setup to account for the 2Pacs when I get them.  Smiley

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January 04, 2017, 03:23:26 PM
 #524

The profile is a different size, because 2Pac heatsinks are on the other side. It's a 2-sided build with the ASICs on the backside (like the S5 or Avalon6) so the heatsink is mounted there. Doing that allowed me to keep the PCB/heatsink area the same (same overall height and board width) because I could put all the node-level components topside. The heatsink fins will also be about 2mm taller than the standard Compac heatsink. The green ones pictured are Compac leftovers I redrilled for prototyping, but the 2Pac heatsinks will be slightly different (and, unfortunately, not anodized a sweet color).

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January 04, 2017, 03:32:13 PM
 #525

The profile is a different size, because 2Pac heatsinks are on the other side. It's a 2-sided build with the ASICs on the backside (like the S5 or Avalon6) so the heatsink is mounted there. Doing that allowed me to keep the PCB/heatsink area the same (same overall height and board width) because I could put all the node-level components topside. The heatsink fins will also be about 2mm taller than the standard Compac heatsink. The green ones pictured are Compac leftovers I redrilled for prototyping, but the 2Pac heatsinks will be slightly different (and, unfortunately, not anodized a sweet color).

will they be bare naked aluminum sliver color?

If so I like that color

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January 04, 2017, 03:36:09 PM
 #526

Yes. My normal heatsink supplier (going back all the way to my AM Blade overclock kits) wouldn't have been able to get me anything until sometime in March, which is noticeably way too late. I asked a friend who is an actual procurement agent for an aluminum casting and machining company to help find another good source but he hasn't reported back positive anything yet so at this point I'm planning on just buying extruded bar stock with the right profile and doing all the cutting, drilling and tapping in house. Since I don't have the equipment to anodize, there won't be sweet colors this time around.

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January 04, 2017, 03:51:44 PM
 #527

Thanks for the info.  Smiley
I remember now that you had said the heatsinks would be on the other side.

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January 04, 2017, 03:58:21 PM
 #528

Sidehack,

What's the size of heatsink mounting screw tap?
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January 04, 2017, 04:10:41 PM
 #529

M3x0.5, same as the original Compac. What's up?

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January 04, 2017, 04:14:45 PM
 #530

Just wondering, in case if I decide to mount several 2PACs in a single big block of heatsink.  Grin
Thanks for the quick response.
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January 04, 2017, 08:44:34 PM
 #531

Yes. My normal heatsink supplier (going back all the way to my AM Blade overclock kits) wouldn't have been able to get me anything until sometime in March, which is noticeably way too late. I asked a friend who is an actual procurement agent for an aluminum casting and machining company to help find another good source but he hasn't reported back positive anything yet so at this point I'm planning on just buying extruded bar stock with the right profile and doing all the cutting, drilling and tapping in house. Since I don't have the equipment to anodize, there won't be sweet colors this time around.

Its that hard to get a simple heatsink? I figured you could get them by the truck load, even more so since its a basic square/rectangle shape and nothing real fancy...

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January 04, 2017, 08:53:12 PM
 #532

Probably should be easy if you got the connections, but since I'm already doing three jobs already I figured I'd talk to someone "in the know". And since I haven't heard anything out of him in 3 weeks, and since the couple other people I've talked to haven't said anything either, I'll just do it my way.

That's how these things always go for me. There's only about three people I trust to actually get things done and I don't work with any of 'em anymore; Novak was the last one around here.

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January 04, 2017, 09:13:49 PM
 #533

Digikey /Newark/Mouser don't have anything? Found this in Digikey and at least at 1st glance looks similar to what the Compac uses http://www.digikey.com/product-detail/en/wakefield-vette/518-95AB/345-1055-ND/340668 They have >1k of them in-stock.

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January 04, 2017, 09:28:12 PM
 #534

Yeah, except that it's the wrong size in every dimension and costs four times as much. At a glance, I don't see anything the right size in their inventory. I'll probably be back to my regular supplier by the time BF16 sticks come out, but for now I'll just do it my way.

Got a new 28-135GH stick miner!
Currently in development - 100+GH USB stick; 800GH 60W pod; 6TH volt-adjustable S1/3/5 upgrade kit
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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January 04, 2017, 10:50:38 PM
 #535

If everything works as expected, yes that's the plan. The actual interface on Compac, 2Pac and Biggie are pretty much the same so VH's cgminer should be forward-compatible with the Biggie as well, though there may be some tweaks once the Biggie is actually rolled out.

Hi there,

any idea if it'll be possible to set different frequencies for Compacs and 2Pacs (and later Biggies) running on the same instance of the VH's cgminer?
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January 05, 2017, 12:19:07 AM
 #536

I don't know if they do large commercial jobs but a quick Google search brought up, dunt, dunt, duh!..... heatsinkusa.com

Will these use the same led's?
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January 05, 2017, 12:19:09 AM
 #537

If everything works as expected, yes that's the plan. The actual interface on Compac, 2Pac and Biggie are pretty much the same so VH's cgminer should be forward-compatible with the Biggie as well, though there may be some tweaks once the Biggie is actually rolled out.

Hi there,

any idea if it'll be possible to set different frequencies for Compacs and 2Pacs (and later Biggies) running on the same instance of the VH's cgminer?
As long as each stick is reported as a separate device I'd guess yes.

For bitcoin to succeed the community must police itself - Joshua Zipkin aka Joshua Alexander leaked AMT A1 miner skype chats
How a miner mfgr SHOULD operate: HaggsFIN trip to Canaan My info useful? Donations welcome! 1Fuzzyk398kDWVjuC5qPX5v6CjSkvbgAbd
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ppetrovic68
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January 05, 2017, 10:24:13 PM
 #538

If everything works as expected, yes that's the plan. The actual interface on Compac, 2Pac and Biggie are pretty much the same so VH's cgminer should be forward-compatible with the Biggie as well, though there may be some tweaks once the Biggie is actually rolled out.

Hi there,

any idea if it'll be possible to set different frequencies for Compacs and 2Pacs (and later Biggies) running on the same instance of the VH's cgminer?
As long as each stick is reported as a separate device I'd guess yes.

Hm, judging by the pic sidehack posted earlier 2Pacs will be identified as GSC, compared to COMPAC, so they will be reported as a separated device, however... if VH's cgminer would still be using --compac-freq parameter to set the frequency then we'll be stuck with the same frequency for both 2Pacs and Compacs on the same instance of cgminer, right?

I might be missing something, but asfaik there is no way to set frequency per device (e.g. running, off of one cgminer, 2 compacs, first one 200Mhz and second one 250Mhz) - can somebody correctly if I'm wrong?

If I'm not wrong, new parameter will be needed (--2pac-freq?) to set different frequency for 2Pacs
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January 05, 2017, 10:31:09 PM
 #539

It might have only been mentioned in the sales thread, but vh's cgminer driver will differentiate between Compac, 2Pac and Biggie miners. I have requested, and have been told it's easy to implement, having a unique frequency flag for each miner type.

Got a new 28-135GH stick miner!
Currently in development - 100+GH USB stick; 800GH 60W pod; 6TH volt-adjustable S1/3/5 upgrade kit
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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January 05, 2017, 11:10:53 PM
 #540

It might have only been mentioned in the sales thread, but vh's cgminer driver will differentiate between Compac, 2Pac and Biggie miners. I have requested, and have been told it's easy to implement, having a unique frequency flag for each miner type.

Great, thanks! I guess I've missed that in the sales thread.
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