- One String - a novel bitfury miner design -

[kaerf]

Fastest USB miner at this moment:

https://i.imgur.com/nFqPO7d.jpg

https://i.imgur.com/MjCPOg4.gif

Doing 15+ GH sustained, hex•fury is running
from a 5.5 Volts supply.

intron

awesome. someone actually made a 6 chip version. i'd thought about making a 6 chip stick when the sample chips first came out (but our first design failed and we gave up)...I think this is the best bang for the buck you can get out of bitfury chips in a USB stick form factor.

[cscape]

I think this is the best bang for the buck you can get out of bitfury chips in a USB stick form factor.

Yes, that was the idea. Total BOM cost is about $4, excluding bitfury ASICs.

[Opsamk]

How much (PM please  )

[Silv0r]

Hi guys,

it's really nice work you've done there. Interested in getting one of them!

Greetings,
Silv0r

[drukoz]

please pm with prices please and thank you

[freddyfarnsworth]

Are the chips available now ? If so a roundabout price ?

[Beastlymac]

Are the chips available now ? If so a roundabout price ?

No they won't be back in stock until February

[sebdude420]

I really like the One String miner. Wish i had some bitfury chips right bout now. Is this what Dave was carrying with him at Inside Bitcoins Las Vegas?

[intron]

I really like the One String miner. Wish i had some bitfury chips right bout now. Is this what Dave was carrying with him at Inside Bitcoins Las Vegas?

Don't think so:)

[allten]

Intron, Cscape,
         Very nice work! Just when i thought I've seen it all, you come a long and surprise me.
in your opinion, what are the possibilities this will become a standard with new ASIC chip designs from others?
Hopefully other ASIC competitors will take notice.
No DCDC converter with only two layer PCBs is a huge win in price reduction.

[KNK]

No DCDC converter with only two layer PCBs is a huge win in price reduction.

Many thanks to bitfury - https://bitcointalk.org/index.php?topic=228677.msg2411923#msg2411923 he designed the chip with that in mind ... so far no one picked up that trend and we are still far from the best design of a chip, but if he fixes the few small problems for V2 (which i am sure he is working on and wish him a luck with that) - that will be the best of both worlds: high hashrate and cheap board.
Many thanks to Intron and Cscape for their work too - they have showed to the public that it's possible and hopefully more chip designers will at least think about the possibility.

[intron]

Intron, Cscape,
         Very nice work! Just when i thought I've seen it all, you come a long and surprise me.
in your opinion, what are the possibilities this will become a standard with new ASIC chip designs from others?
Hopefully other ASIC competitors will take notice.
No DCDC converter with only two layer PCBs is a huge win in price reduction.

To be able to make a string design, the chip must provide
for a method to shunt the current that is carried by the
string when it is not in full operation. When you got that
one right and have some means of level shifting of the
signals going up and down the string it should be possible
whith any chip.

And Valery got that right:)

[palawan]

Fastest USB miner at this moment:

Doing 15+ GH sustained, hex•fury is running
from a 5.5 Volts supply.

intron

How much?

PM-ed you.

Also interested in the hex*fury...  Please PM for the price.  Thanks.

[drukoz]

Fastest USB miner at this moment:





Doing 15+ GH sustained, hex•fury is running
from a 5.5 Volts supply.

intron

how much for any of ur products ?

[goxed]

I have a few quick question regarding string configuration.

Q1 ) Can I assume each bitfury chip acts like a diode, and a string is just a series connection of multiple chips?

Q2 ) Do the chips have an internal voltage regulator or some kind of impedance adjustment?

Thanks in advance.

[KNK]

Q1 ) Can I assume each bitfury chip acts like a diode, and a string is just a series connection of multiple chips?

Not quite, as it has it's own consumption, not a fixed voltage drop like diodes, but the second part is correct.

Q2 ) Do the chips have an internal voltage regulator or some kind of impedance adjustment?

Yes there is current mirror inside the chip, which does the job.
Detailed explanation is here and here is a picture of what's inside the chip (to replace Russian explanation), but the external links of the schematic are wrong

[ManeBjorn]

Where do we get these to test out??  That looks like a little beast with a big punch.

Fastest USB miner at this moment:





Doing 15+ GH sustained, hex•fury is running
from a 5.5 Volts supply.

intron

[snoopy_nzl]

I'D like to buy one can I get directions where to buy from?

[cscape]

I'D like to buy one can I get directions where to buy from?

We are working with others to get both the 15-chip One String Miner, as well as the 6-chip hex*fury produced.

[klondike_bar]

I'D like to buy one can I get directions where to buy from?

We are working with others to get both the 15-chip One String Miner, as well as the 6-chip hex*fury produced.

I await updates on this

someone needs to compete with Bitmain. its shocking that that company came out of no-where with a developed product, and has sold from stock for months now at the best price on the market and some of the best design (could be a little more compact or a bit more power efficient, but those are little details)