[ANN] Bitfury is looking for alpha-testers of first chips! FREE MONEY HERE! - page 36.

AMD FTW

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GET IN - Smart Ticket Protocol - Live in market!

Quote from: cscape on July 24, 2013, 01:46:54 PM

First prototype of Bitfury S-HASH board is hashing:

Features:

16 Bitfury ASIC capacity
Adjustable (through 0805 SMT resistor) voltage regulator between 0.7 and 0.9V
Core voltage regulator has 50A capacity, so chips can be overclocked.
On-board ARM Cortex M3 processor with standard RJ-45 100 Mbps Ethernet port.
Built-in mining software can operate stand-alone. No PC or Raspberry PI needed, just an internet connection.
TCP/IP stack with DHCP and DNS support. Just fill in pool server name, port number, username and password.
Support for Stratum and backup mining pools.
Built-in small webserver for chip status/speed reports.
PCB temperature sensor, could be used for automatic shutdown when temperature gets too high.

If you don't have the budget for a large number of chips, overclocking is the best option, as it will get you 40GH/sec out of a card (probably more with better cooling), instead of 25GH for a standard H-CARD for the same 16 chips. At 40GH/sec, the card uses about 35 Watts, running off a standard 12V DC supply.

Where are these cards going to be sold at for US customers...Cscape you have my attention

Dexter770221

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How to determine that work is finished (all nonces are scanned)? When knowing clock this is bassically a simple calculation but when clock is unknown? Bitfury said that clock is dependent on voltage and will propably vary between chips. So, there's any command that chips may be polled with?
Thanks.

cscape

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Yes, that's the CPU model, but there are plenty of other models that could replace it without loss in functionality. Apart from ethernet, plenty of RAM and enough core power to do some SHA256 hashing the are not too many requirements.

The firmware is proprietary.

Edit: to give an example about the SPI interface, you can look at bitfury's example/test code here.

ermak72

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cscape, intron, ..
You use LPC1758FBD80? you can lay out a source code,... example?

cscape

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Quote from: .m. on July 24, 2013, 03:53:47 PM

wow ! Very nice work, congratulation !
How did you manage to make those chips work in chain (if it is not a secret Wink

?

It's not a secret. Bitfury described it earlier in this thread. There's a SPI command that causes a chip to forward all SPI signals to/from the next chip. So, when you're talking to the first chip, send the command, and then you'll be talking to the next chip, send the command again, and you're talking to the 3rd chip. After you talked to the last chip, send another command to break the chain. This command will be broadcast through the entire chain, and cause each chip to stop forwarding. After this, you're talking to the first chip again and the process can be repeated.

minternj

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Thanks, that makes sense. I see why its not easy to change now.

alfabitcoin

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Quote from: minternj on July 24, 2013, 04:21:49 PM

cscape, a few of us are wondering how much the h-card can be overclocked to. Have you tested that? We know that it is limited to the regulator.

30A reg maxout is on the board. 40A max at core limit.
There is no reg subtitute with higer limits (as I know, I already tried to find). To maximaze the chips hashrate we might need board with less chips.

dave and cscape qutoes;
For 0.65V you need exactly 1K resistor for R01F.
For 0.70V you need 1.5K.

With 1K resistor I get 1.26Amps @ 12.0 V, so 15Watts for an h-board.

[edit] Remember, with 16 chips, soldering that higher value resistor will quickly max out the amps that the regulator can handle.

The 2.7GH/sec result I got with a single ASIC test board required 2.5A, and 0.835V. If you were to attempt that on the whole board, the total current of 40A would exceed the capabilities of the regulator.

--------
btw great work cscape, awesome!
Picture is kind of look but can not touch Roll Eyes

Come on investors, grab this oportunity!

minternj

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cscape, a few of us are wondering how much the h-card can be overclocked to. Have you tested that? We know that it is limited to the regulator.

.m.

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wow ! Very nice work, congratulation !
How did you manage to make those chips work in chain (if it is not a secret Wink

?

cscape

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Quote from: tom99 on July 24, 2013, 02:52:47 PM

Cscape: Can we buy board from you without asic chips on it.?

No, not at this moment. I'll first see if there's anybody interested in a commercial collaboration.

Also, mounting QFN48 chips with thermal pad and a few hundred 0402 parts is not something that a lot of people can do reliably.

jimrome

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Quote from: cscape on July 24, 2013, 03:06:34 PM

Quote from: zulunation on July 24, 2013, 02:57:56 PM

cscape what power regulator are you using?

This Lineage Power module.

inb4 worldwide shortage of this part

cscape

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Quote from: zulunation on July 24, 2013, 02:57:56 PM

cscape what power regulator are you using?

This Lineage Power module.

cscape

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Quote from: achimsmile on July 24, 2013, 02:22:10 PM

It's beautiful cscape! So you are atm hashing at a steady 40GH/s without heatsinking? Nice!!

(Hmm... forum ate my reply. I'll edit this post and add it again).

Pretty much 40GH, yes. This is just a random sample of 16 chips, from what I suppose was the first batch of ASICs. There's some variation between them, and there's some fluctuations as I measure the hashing rate based on the count of valid nonces produced, and not the operating speed.

zulunation

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cscape what power regulator are you using?

tom99

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Cscape: Can we buy board from you without asic chips on it.?

merv77

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1.21 GIGA WATTS

Quote from: Micky25 on July 24, 2013, 02:25:42 PM

where/how can this be bought? You guys rule! Grin

+1
I'd be interest in couple for playing DIY Tongue

Micky25

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where/how can this be bought? You guys rule! Grin

Quote from: cscape on July 24, 2013, 01:46:54 PM

First prototype of Bitfury S-HASH board is hashing:

Features:

16 Bitfury ASIC capacity
Adjustable (through 0805 SMT resistor) voltage regulator between 0.7 and 0.9V
Core voltage regulator has 50A capacity, so chips can be overclocked.
On-board ARM Cortex M3 processor with standard RJ-45 100 Mbps Ethernet port.
Built-in mining software can operate stand-alone. No PC or Raspberry PI needed, just an internet connection.
TCP/IP stack with DHCP and DNS support. Just fill in pool server name, port number, username and password.
Support for Stratum and backup mining pools.
Built-in small webserver for chip status/speed reports.
PCB temperature sensor, could be used for automatic shutdown when temperature gets too high.

If you don't have the budget for a large number of chips, overclocking is the best option, as it will get you 40GH/sec out of a card (probably more with better cooling), instead of 25GH for a standard H-CARD for the same 16 chips. At 40GH/sec, the card uses about 35 Watts, running off a standard 12V DC supply.

achimsmile

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Yesterday was my 27th birthday.... I'm just saying... Grin

I guess the orange tree my girlfriend gave me will have to do for this year hehe

It's beautiful cscape! So you are atm hashing at a steady 40GH/s without heatsinking? Nice!!
Looking forward for a manufacturer picking this up!

cscape

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Quote from: bkpduke on July 24, 2013, 01:59:36 PM

Is there any chance of retrofitting current H model boards for a little overclocking? I have no fear of a solder iron.

The voltage regulator on the H-CARD has a 30A capacity, which limits the overclocking range, and there are no simple replacements for the regulator.

cscape

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For cooling I have a standard PC case fan set up above the board, blowing down on the surface. No heat sink, so it's not an optimal set up. The board has a couple of mounting holes, and a flat back, so the idea is to mount a heat sink on the back.

No plans yet, just having fun. I will not be doing any manufacturing or retail selling myself, but I'm open for collaborations with other companies.

Topic: [ANN] Bitfury is looking for alpha-testers of first chips! FREE MONEY HERE! - page 36. (Read 176728 times)