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Author Topic: GekkoScience BM1384 Project Development Discussion  (Read 145329 times)
HolgerDansk
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April 23, 2015, 08:49:44 PM
 #521

@sidehack

Thank you for sharing your skills and effort on this project.  I think it is a great idea, to have something simple and low cost that people can learn with. 

Although have an S2, S5's and had some S3+ miners, I've never dared to tinker with them.  I don't want to mess up a miner that I had to pay that much for (nor void a warranty).  This will be something perfect that I can try different things with.

Great work.  Keep it up!
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April 23, 2015, 08:51:37 PM
 #522

Also, many power coils don't like higher frequencies. Core losses increasing dramatically when frequency is above sweet spot. At coilcraft website is nice tool to compare their coils. You may set freq, current and see some nice graphs Wink

Under development Modular UPGRADEABLE Miner (MUM). Looking for investors.
Changing one PCB with screwdriver and you have brand new miner in hand... Plug&Play, scalable from one module to thousands.
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April 23, 2015, 09:12:29 PM
 #523

I'm not sure how stable the buck driver was at the higher frequency either. My outputs I was seeing pulses in the 800KHz neighborhood. The inductor behaved well at 600KHz off the IR3899.

But yeah, reducing core losses in the inductor was likely a contributing factor in improved efficiency.

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April 23, 2015, 09:54:41 PM
 #524

<snip>
600mVGHIinPinW/GH
100MHz5.537218600.34
125MHz6.8844822400.33
150MHz8.2551125550.31
625mV
100MHz5.539019500.35
125MHz6.8846423200.34
150MHz8.2554427200.33
175MHz9.6362031000.32
200MHz1170435200.32
650mV
100MHz5.541020500.37
125MHz6.8849524750.36
150MHz8.2557528750.35
175MHz9.6366033000.34
200MHz1176038000.35
225MHz12.3885042500.34
250MHz13.7594547250.34
675mV
100MHz5.544022000.4
125MHz6.8853026500.39
150MHz8.2561030500.37
175MHz9.6371535750.37
200MHz1181040500.37
225MHz12.3891545750.37
250MHz13.75102051000.37
 <snip>
these are really fucking good numbers.  <snip>
Haha, I love your display of enthusiasm!! It's not often I see you using such language Smiley

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April 23, 2015, 10:13:48 PM
 #525

Wow this is so exciting. Looks like I might actually get to upgrade the rest of my old S1's!! Can't wait. These days I only run them when it is cold outside. You guys are awesome. So much fun coming down the pike. I had a great time upgrading a couple of my S1's to S3's with my daughter (she got a big kick out of taking everything apart and putting it all back together and seeing it work) but then bitmain discontinued sales of the upgrade kit the second I got the two upgrade kits I ordered working properly. Really looking forward to sitting down with my kid again and upgrading the other couple dozen S1's I have left.   
Godspeed to you all!!!
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April 24, 2015, 01:53:18 AM
 #526

this is making me want to get my fluke clones and see why my dodgy "New R-Box" is dodgy, i think i have schematics somewhere...

none the less, a handful of these single chips would probably fit easily over the rbox's heatsinks, and probably out preform the be200s..

actually, i wonder :-? could i just squirt these BMs in the same place? where's my hax-saw, $5 solder-blobber and 10-gauge wire...
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April 24, 2015, 02:14:26 AM
 #527

I have about half a dozen New R-Box on the shelf that we got busted off CrazyGuy and rebuilt. Those are nice little units, and kinda meet the same niche that we'd like to do with individual TypeZero boards.

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April 24, 2015, 03:49:33 AM
 #528

to bad rockxie canned the business and went following friedcat into the not so, but similar flavoured, gaw hell... he was doing good for a while there, then greed kicked in i thinks.

if you can fill that void, many people would be happy, Bring the mining back to the people!
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April 24, 2015, 04:01:33 AM
 #529

Bring the mining back to the people!

That is one of our primary goals, always has been. Slow starting on account of we won't take in investor, speculation or dev-preorder money out of principle, but hopefully we can get rolling here soon. First thing in the morning Novak and I need to give the Compac PCB a once-over, and if it checks out we'll be ordering prototypes. With any luck, two weeks from now we'll have sample units in a few hands for testing and review.

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April 24, 2015, 04:05:54 AM
 #530

Bring the mining back to the people!

That is one of our primary goals, always has been. Slow starting on account of we won't take in investor, speculation or dev-preorder money out of principle, but hopefully we can get rolling here soon. First thing in the morning Novak and I need to give the Compac PCB a once-over, and if it checks out we'll be ordering prototypes. With any luck, two weeks from now we'll have sample units in a few hands for testing and review.

Good I am bored out of my mind without any new gear to play with.  Fingers crossed.

Please support sidehack with his new miner project Send to : 1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
I mine alt coins with https://simplemining.net I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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April 24, 2015, 04:13:05 AM
 #531

Bring the mining back to the people!

That is one of our primary goals, always has been. Slow starting on account of we won't take in investor, speculation or dev-preorder money out of principle, but hopefully we can get rolling here soon. First thing in the morning Novak and I need to give the Compac PCB a once-over, and if it checks out we'll be ordering prototypes. With any luck, two weeks from now we'll have sample units in a few hands for testing and review.

Good I am bored out of my mind without any new gear to play with.  Fingers crossed.

That would be great! I am the same way.  Although this weekend if all goes as planned my new mining area will keep me busy setting it up.  Have networking ran to it.  Now just need to run a 9 electrical cables.
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April 24, 2015, 04:35:18 AM
 #532

Bring the mining back to the people!

That is one of our primary goals, always has been. Slow starting on account of we won't take in investor, speculation or dev-preorder money out of principle, but hopefully we can get rolling here soon. First thing in the morning Novak and I need to give the Compac PCB a once-over, and if it checks out we'll be ordering prototypes. With any luck, two weeks from now we'll have sample units in a few hands for testing and review.

Good I am bored out of my mind without any new gear to play with.  Fingers crossed.

That would be great! I am the same way.  Although this weekend if all goes as planned my new mining area will keep me busy setting it up.  Have networking ran to it.  Now just need to run a 9 electrical cables.

pictures please post them in your fans thread   https://bitcointalk.org/index.php?topic=1020826.0


@ sidehack It has been a pleasure reading this thread and watching this grow.  Thanks for giving me something to look forward to in mining gear.

Please support sidehack with his new miner project Send to : 1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
I mine alt coins with https://simplemining.net I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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April 24, 2015, 01:39:19 PM
 #533

I have 3 S3 ready for upgrade but i will also try to find old cheap S1 to udgrade them with your boards.

Fun times ahead !!! Cheesy
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April 24, 2015, 03:40:00 PM
 #534

With any luck, two weeks from now we'll have sample units in a few hands for testing and review.


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April 24, 2015, 04:14:17 PM
 #535

Bring the mining back to the people!

That is one of our primary goals, always has been. Slow starting on account of we won't take in investor, speculation or dev-preorder money out of principle, but hopefully we can get rolling here soon. First thing in the morning Novak and I need to give the Compac PCB a once-over, and if it checks out we'll be ordering prototypes. With any luck, two weeks from now we'll have sample units in a few hands for testing and review.

Considering the damage BFL has done, you might want to replace a 2 week estimate with something more like 3, even if 2 is more accurate. While this is obviously hugely more transparent than BFL, I am afraid they may have ruined the phrase "Just two more weeks".    Smiley
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April 24, 2015, 04:57:59 PM
 #536

Bring the mining back to the people!

That is one of our primary goals, always has been. Slow starting on account of we won't take in investor, speculation or dev-preorder money out of principle, but hopefully we can get rolling here soon. First thing in the morning Novak and I need to give the Compac PCB a once-over, and if it checks out we'll be ordering prototypes. With any luck, two weeks from now we'll have sample units in a few hands for testing and review.

Considering the damage BFL has done, you might want to replace a 2 week estimate with something more like 3, even if 2 is more accurate. While this is obviously hugely more transparent than BFL, I am afraid they may have ruined the phrase "Just two more weeks".    Smiley

two week wait time shall be replaced by "about one fortnight's waiting period" . Wink

Please support sidehack with his new miner project Send to : 1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
I mine alt coins with https://simplemining.net I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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April 24, 2015, 05:02:19 PM
 #537

<snip>
600mVGHIinPinW/GH
100MHz5.537218600.34
125MHz6.8844822400.33
150MHz8.2551125550.31
625mV
100MHz5.539019500.35
125MHz6.8846423200.34
150MHz8.2554427200.33
175MHz9.6362031000.32
200MHz1170435200.32
650mV
100MHz5.541020500.37
125MHz6.8849524750.36
150MHz8.2557528750.35
175MHz9.6366033000.34
200MHz1176038000.35
225MHz12.3885042500.34
250MHz13.7594547250.34
675mV
100MHz5.544022000.4
125MHz6.8853026500.39
150MHz8.2561030500.37
175MHz9.6371535750.37
200MHz1181040500.37
225MHz12.3891545750.37
250MHz13.75102051000.37
 <snip>
these are really fucking good numbers.  <snip>
Haha, I love your display of enthusiasm!! It's not often I see you using such language Smiley


0.31 watts  a ch deserves the f bomb.   I can see the future of home mining as a large amount of lotto players.

a set of 3 sticks = 60 bucks.  16 gh mining at westhash kano nicehash  and 8gh at a solo pool.

that setup will allow for a free shot at a block for over a years time.  (rough in my head estimate)

actual estimate is after 465 days  you paid for all your power and you paid the sticks down to 56 dollars.

plus you had a 465 day shot at the solo pool with 8gh.  and you still possess the 3 sticks.  Most all the years of usb sticks they were not that good of a deal.

Please support sidehack with his new miner project Send to : 1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
I mine alt coins with https://simplemining.net I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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April 24, 2015, 05:05:43 PM
 #538

I stand by what I said. I just finished going over the PCB design and found a few corrections. Novak might take a look at it this afternoon. I expect by 4PM or so we've placed an order for prototype PCBs. The last batch arrived in a little over a week. So that gives us half a week to assemble and test a handful of boards. In that time I also need to get some heatsinks shipped in but that shouldn't be difficult.

We're already behind on my estimated timeline, mostly because of jacking with that effin' regulator. If I'd done it "right" (and by "right" I mean avoid complex monolithic options and go with modular reduced complexity, which is our general design preference) I'd probably already have protoPCBs in hand.

I won't make any estimate about TypeZero or Amita boards. My task this afternoon will be to conjure up a better BM1384 breakout with integrated parallel and string chips so we can get them in the same proto batch. Next week the focus will be on TypeZero regulator design (about half of which is already done) and testing. I'll probably have a second Compac regulator test board I can refit for Amita voltage levels. If that works, and the string test board works, I'll start modifying Compac PCB to Amita PCB.

For any reference of design steps so far, the first Compac board design was V0.0 and the current is V0.3, so it's undergone three major revisions of circuitry and physical layout. Shouldn't have taken that many changes to get something right. I'm annoyed by this.

Right now I'm planning on sending test Compacs to philipma1957, CrazyGuy and MrTeal (if they'd be willing to help out, and also get me their addresses). I respect their knowledge and opinions regarding market demands, customer use-cases and overall engineering quality.

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April 25, 2015, 01:15:03 AM
 #539

I stand by what I said. I just finished going over the PCB design and found a few corrections. Novak might take a look at it this afternoon. I expect by 4PM or so we've placed an order for prototype PCBs. The last batch arrived in a little over a week. So that gives us half a week to assemble and test a handful of boards. In that time I also need to get some heatsinks shipped in but that shouldn't be difficult.

We're already behind on my estimated timeline, mostly because of jacking with that effin' regulator. If I'd done it "right" (and by "right" I mean avoid complex monolithic options and go with modular reduced complexity, which is our general design preference) I'd probably already have protoPCBs in hand.

I won't make any estimate about TypeZero or Amita boards. My task this afternoon will be to conjure up a better BM1384 breakout with integrated parallel and string chips so we can get them in the same proto batch. Next week the focus will be on TypeZero regulator design (about half of which is already done) and testing. I'll probably have a second Compac regulator test board I can refit for Amita voltage levels. If that works, and the string test board works, I'll start modifying Compac PCB to Amita PCB.

For any reference of design steps so far, the first Compac board design was V0.0 and the current is V0.3, so it's undergone three major revisions of circuitry and physical layout. Shouldn't have taken that many changes to get something right. I'm annoyed by this.

Right now I'm planning on sending test Compacs to philipma1957, CrazyGuy and MrTeal (if they'd be willing to help out, and also get me their addresses). I respect their knowledge and opinions regarding market demands, customer use-cases and overall engineering quality.

This is great news!  So cool to see a miner being developed transparently and with noble intentions.  Seriously man, the community needs more people like you and Novak.  Respect.

I'm really looking forward to seeing what you can do with the TypeZero next, I'll almost certainly be picking some up from you.

Off topic - going to ping you on some more of that ring terminal cabling that I got from you a couple months ago too, a lot of it! Smiley
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April 25, 2015, 01:22:48 AM
 #540

I stand by what I said. I just finished going over the PCB design and found a few corrections. Novak might take a look at it this afternoon. I expect by 4PM or so we've placed an order for prototype PCBs. The last batch arrived in a little over a week. So that gives us half a week to assemble and test a handful of boards. In that time I also need to get some heatsinks shipped in but that shouldn't be difficult.

We're already behind on my estimated timeline, mostly because of jacking with that effin' regulator. If I'd done it "right" (and by "right" I mean avoid complex monolithic options and go with modular reduced complexity, which is our general design preference) I'd probably already have protoPCBs in hand.

I won't make any estimate about TypeZero or Amita boards. My task this afternoon will be to conjure up a better BM1384 breakout with integrated parallel and string chips so we can get them in the same proto batch. Next week the focus will be on TypeZero regulator design (about half of which is already done) and testing. I'll probably have a second Compac regulator test board I can refit for Amita voltage levels. If that works, and the string test board works, I'll start modifying Compac PCB to Amita PCB.

For any reference of design steps so far, the first Compac board design was V0.0 and the current is V0.3, so it's undergone three major revisions of circuitry and physical layout. Shouldn't have taken that many changes to get something right. I'm annoyed by this.

Right now I'm planning on sending test Compacs to philipma1957, CrazyGuy and MrTeal (if they'd be willing to help out, and also get me their addresses). I respect their knowledge and opinions regarding market demands, customer use-cases and overall engineering quality.
 I will send you a pm with mailing info.

  Pm sent.

 As for marketing pushing the most efficient miner at watt per gh is big.

3 watts for 9gh  in a usb stick huge. A good lotto ticket so to speak.

the real key is .31-.35 watts a gh at decent prices.

More obvious is how much hashrate.

8-11gh 1 chip stick for 20 bucks that is super efficient will sell.

but what does the 16-20gh 2 chip stick sell for?  it won't do well at 40 bucks.

same for they bigger s-1 replacement board.  scaling to 2th what does it sell for?

Obvious sidehack and novak need a markup . will there be middlemen ?

ie 100 sticks to me I sell on ebay like the old days----not sure how effective this would be

all the little details to hammer out on marketing.

Please support sidehack with his new miner project Send to : 1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
I mine alt coins with https://simplemining.net I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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