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Author Topic: GekkoScience BM1384 Project Development Discussion  (Read 145308 times)
Searing
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September 11, 2015, 05:08:27 AM
 #1861

BTW, still no response from BM about chips.

I guess the squeaky wheel gets ignored.

Just call me the Minnesota Mushroom: Kept in the cold dark and not feed shit.


While it was a valiant effort on your part, it can't be a real surprise if they decline to sell BM 1385 parts for at least a couple of months. They need to supply all the S7's they can while the market is hot.


Just wondering for the sake of argument say that the project GOT these chips..what would we be looking at for speed etc if it was made like the current USB stick project

what is a ballpark of what the sticks would run at then?




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September 11, 2015, 06:39:00 AM
 #1862

BTW, still no response from BM about chips.

I guess the squeaky wheel gets ignored.

Just call me the Minnesota Mushroom: Kept in the cold dark and not feed shit.


While it was a valiant effort on your part, it can't be a real surprise if they decline to sell BM 1385 parts for at least a couple of months. They need to supply all the S7's they can while the market is hot.

Even after that they are not really known for selling chips they seem to like to sell miners.  I honestly was surprised GekkoScience managed to get BM chips.

I hope they do support projects more and become easier to get chips.  But I'm not sure I see it happening.
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September 11, 2015, 07:21:11 AM
 #1863

BTW, still no response from BM about chips.

I guess the squeaky wheel gets ignored.

Just call me the Minnesota Mushroom: Kept in the cold dark and not feed shit.


While it was a valiant effort on your part, it can't be a real surprise if they decline to sell BM 1385 parts for at least a couple of months. They need to supply all the S7's they can while the market is hot.

Our market IS hot  Grin

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September 11, 2015, 09:26:09 AM
 #1864

While doing your own usage measurement is a great idea, there is still some mystery into how the actual bill from the Power Company is derived from that (e.g. fixed costs, taxes, fees, etc).

this is true, my power company wont even tell you how much they charge you if you ask them on the phone. the bill has NO price per KWH.. just a value you used, and how much you owe at the bottom.


 Sounds like time to talk to your state's Utility Regulatory Board (or whatever the equivilent group in your state is).
 I'm pretty sure they are REQUIRED to post their rates somewhere by Federal law or FTC regulation.
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September 11, 2015, 10:03:24 AM
 #1865

Just wondering for the sake of argument say that the project GOT these chips..what would we be looking at for speed etc if it was made like the current USB stick project
I think sidehack was reluctant on another stick, but the limits - as with the BM1384 - would mostly be in power drawn and heat you can dissipate.  A very naive conversion from the datasheet (hopefully we'll see more data points in an update / from actual use) taking into account a bit of losses gives ~2.25A at the cited 38.75Gh/s (the S7 seems to run them at 30Gh/s stock).  The Compac with BM1384 handles 2A+ like a champ with a bit of active cooling.
If somebody has happened to have found MHz => Gh/s multiplier for the BM1385 (datasheet, website, marketing don't seem to state or reveal) you could run some numbers against the frequency table in the datasheet.

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September 11, 2015, 11:11:31 AM
 #1866

While doing your own usage measurement is a great idea, there is still some mystery into how the actual bill from the Power Company is derived from that (e.g. fixed costs, taxes, fees, etc).

this is true, my power company wont even tell you how much they charge you if you ask them on the phone. the bill has NO price per KWH.. just a value you used, and how much you owe at the bottom.


 Sounds like time to talk to your state's Utility Regulatory Board (or whatever the equivilent group in your state is).
 I'm pretty sure they are REQUIRED to post their rates somewhere by Federal law or FTC regulation.

well xcel where i'm at it is 8.6c kwh they say..when you figure in taxes and other fees it is (as of last bill) 13.7c kwh exactly for what they state on the bill I used
just take that into consideration as well...Also the rate is the same all year long as far as I know.

Reality Sucks Smiley



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Searing
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September 11, 2015, 11:13:59 AM
 #1867

Just wondering for the sake of argument say that the project GOT these chips..what would we be looking at for speed etc if it was made like the current USB stick project
I think sidehack was reluctant on another stick, but the limits - as with the BM1384 - would mostly be in power drawn and heat you can dissipate.  A very naive conversion from the datasheet (hopefully we'll see more data points in an update / from actual use) taking into account a bit of losses gives ~2.25A at the cited 38.75Gh/s (the S7 seems to run them at 30Gh/s stock).  The Compac with BM1384 handles 2A+ like a champ with a bit of active cooling.
If somebody has happened to have found MHz => Gh/s multiplier for the BM1385 (datasheet, website, marketing don't seem to state or reveal) you could run some numbers against the frequency table in the datasheet.

Yeah I just used the usb stick analogy as a comparison ..but wow 8gh to about 30gh is more then I figured) Smiley

Would be nice to see an 'open source' miner project (even if not ROI per say but then again modding cars or PC systems never paid either) Smiley


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September 11, 2015, 12:53:13 PM
 #1868

The info at Western Digital is spotty at best for now. It looks like the power supply they ship is only 5v. If you look at the pictures on their website, you can see the Pi logo on the drive it's self but you can't make out the specs on the power supply. I think they are integrating a simple SATA to USB 2.0 chip on the drive control card and using the USB 3.0 connector to provide an additional lane of 5v power to the drive. The trick part that I wanted to point out was the cable and the fact that they were using the USB 3.0 jack in an unconventional way, while still communicating assumedly in USB 2.0 protocol.
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September 11, 2015, 01:56:50 PM
 #1869

While it would probably be super easy to modify the Compac to BM1385 (probably just change footprints, possibly voltage range) I'd just as soon not mess with it unless there's a lot of demand. And, from a business standpoint, I'd rather not put that out until the existing Compacs are all sold or I'd have a couple grand in chips and PCBs with nowhere to go.

The first (and probably smallest) product I'd put out with new chips (if I had enough) would be the pod miner intended to use a CPU cooler.

I'm not surprised BM isn't selling chips either. I didn't figure they'd let any sample chips go until at least after the S7 was shipping. I'm surprised they're not even responding, though. Usually they'd at least say something.

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September 11, 2015, 05:23:34 PM
 #1870

And it would be interesting to see work get done on a gh/$ effective "cpu pod" or more so PCB to be mounted on S1 heatsinks or such, but i'm guessing Bitmain is calling dibs on selling their(BM1385) chips for now until competition arise.

Right now they kind of have monopoly at that range.

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September 11, 2015, 05:28:22 PM
 #1871

Heard from anyone else? Avalon, Innosilicon?

Negative.

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..............
...........ICO            Dec 1st – Dec 30th............
       ............Open            Dec 1st- Dec 30th............
...................ANN thread      Bounty....................

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September 11, 2015, 05:33:56 PM
 #1872

To be honest there are so many ways for Bitmain to make money before they sell chips. If anything I am surprised that BM1384 chips were released, but I guess they were just running down stocks ahead of the BM1385 / S7 release?

I would love to see GekkoScience be able to buy some and come up with an S1/S3 sized solution as it's my only chance of having a BM1385 based product. S7 is just way too expensive with UK import duties & VAT etc. So good luck but IMHO unlikely until BM1386 is close to release.

Rich

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September 11, 2015, 05:34:27 PM
 #1873

Heard from anyone else? Avalon, Innosilicon?

Negative.

Have you tried to contact SFards?   I think a small version would be nice their 1.2k machine is a little price (although still can not buy direct).  

Maybe one or eve a few of these chips would be fun to play around i with the dual miner aspect.
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September 11, 2015, 06:19:36 PM
 #1874

If PC gets SFARDS chips PC won't get GekkoScience boards. I've said it a dozen or two times already, but big BGA is stupid and hard to work with.

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September 11, 2015, 06:28:32 PM
 #1875

If PC gets SFARDS chips PC won't get GekkoScience boards. I've said it a dozen or two times already, but big BGA is stupid and hard to work with.

I can understand that.   Bitmain I still hope they decide to help this project and be more willing to sell chips for project.

Good news is Innosilicon chances are will sell chips to anyone.  First batches most likely will go to LKetc though. But even if Bitmain does not sell again for a while there hopefully will be Innosilicon in not horribly distant future.
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September 11, 2015, 06:33:38 PM
 #1876

Bit Innosilicon isn't willing to sell sample chips. Right now they're looking for large batch investments, which sure as heck isn't gonna happen without playing with a few first to make sure they work right. If PC hasn't heard fresh news from Innosilicon, I have to assume that's still their stance.

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September 12, 2015, 02:19:24 AM
 #1877

If PC gets SFARDS chips PC won't get GekkoScience boards. I've said it a dozen or two times already, but big BGA is stupid and hard to work with.

We have little to no interest in the SFARDS chip, for a plethora of reasons already stated in this thread.

..C..
.....................
........What is C?.........
..............
...........ICO            Dec 1st – Dec 30th............
       ............Open            Dec 1st- Dec 30th............
...................ANN thread      Bounty....................

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September 12, 2015, 02:34:59 AM
 #1878

Bit Innosilicon isn't willing to sell sample chips. Right now they're looking for large batch investments, which sure as heck isn't gonna happen without playing with a few first to make sure they work right. If PC hasn't heard fresh news from Innosilicon, I have to assume that's still their stance.

We left our conversations with Innosilicon at "when you get productions chips we'll buy them in quantity".
To be honest, I'm not the slightest bit interested in buying experimental prototypes which will likely differ considerably from production units.
And having been badly burned in pre-sales schemes before, the statement "not only NO, but F#$% NO" comes to mind.

Acquiring experimental prototype chips (assuming they'd sell them) and forwarding them to GS for board design seems like a huge waste of their time (and a waste of our money).
Given the high probability that the specs on the production chip will be radically different as a result of prototyping.

Put bluntly, if we were going to buy a large quantity of chips (250K-500K) we'd fund the design effort to make one of our own.
This concept is not "off the table".

..C..
.....................
........What is C?.........
..............
...........ICO            Dec 1st – Dec 30th............
       ............Open            Dec 1st- Dec 30th............
...................ANN thread      Bounty....................

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September 12, 2015, 02:40:14 AM
 #1879

I wouldn't advise buying more than a few dozen of any chip without first playing with samples, whether they be engineering samples or final-version or whatever. Even if a design needs to be changed to accomodate the final product, having samples that are at least in the ballpark gets you in the ballpark and gets you there a heck of a lot sooner than waiting for production chips.

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September 12, 2015, 07:18:28 PM
 #1880

Electricity cost here has tripled since Dec 2005 (the date I ran in grid power) and am re-visiting generating all my own power again given the current trends.

Pretty sad statement when the end consumer can generate electricity cheaper than multi-billion dollar companies.

It is a direct result of a true monopoly. The only monopolies that have ever existed: those created by force of law and defended by physical threat.

A heat wave is coming. Ever hear Budweiser (or Budvar, if you're an originalist) take to the ether and beg you all to cut down on buying Bud because the company can't keep up, and it's the right thing to do, and then "ask" you to accept rationing? Then, just when you need your ice cold Bud most, they take it away from you? Ever wonder why true monopolies do that? Ever wonder why true monopoly prices do just keep going up, *in spite* of regulation?

And people BEGGED for them. Still do.

Happy?


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