Topic: [ANN] Bitfury is looking for alpha-testers of first chips! FREE MONEY HERE! - page 50. (Read 176729 times)

That`s are really great values, I hope internal clock is working great too.

Nice pcb`s intron, that was fast delivery

And now fire up the clock! Luckely power dissipation
is linear with frequency and not quadratic as with core
voltage:-)

intron

Earlier then expected the bitfury test jigs arrived:



Together with the solder paste screen for reflow
soldering of the ASICs:



Next step is connecting these boards to the SPI
link of S-HASH and compiling and running some
of bitfury's code.

intron

Power consumption feeding it with different voltages (unprogrammed and no clock).

[14.06.13, 20:19:00] Niko: 0.5V = 0.03A
[14.06.13, 20:21:14] Niko: 0.55V = 0.04A
[14.06.13, 20:21:38] Niko: 0.597V = 0.06A
[14.06.13, 20:22:14] Niko: 0.698V = 0.11A
[14.06.13, 20:22:29] Niko: 0.75V = 0.15A
[14.06.13, 20:22:51] Niko: 0.79V = 0.19A
[14.06.13, 20:21:56] Niko: 0.65V = 0.08A
[14.06.13, 20:23:16] Niko: 0.85V = 0.29A
[14.06.13, 20:23:35] Niko: 0.9V = 0.40A
[14.06.13, 20:25:11] Niko: 0.95V = 0.60A..

Now we'll do most important, we'll try to see clock, then we'll try to hash on 0.6 V... I think 1 W / GH/s is easy target for us, very easy :-) Do you see relationship in unprogrammed state ? ;-) So if it computes correctly - then it will beat power limit definitely :-)

Bitbet left only 6 hours as I write this. If chip will work but bitbet would reject proof - those who put bet on YES I'll pay myself. If we'll make however test earlier than  6 hours - but bitbet would reject proof - that's their reputation issue and not ours. As actually we have no fears, this result will be re-verified multiple times and overall costs involved are MUCH higher than those bet value :-) So no sense to lie just to win bet :-))) Already flight to Taiwan and organizing test had quite significant costs :-))))

Here's a good reason to learn some finnish: My trip blog

Are there plans to sell the chips globally after 100th and Metabank are supplied? If so what time frame?

Can only or can not be shipped to Russia?



Chips will be sent from Taiwan it would be a brilliant idea to only send them to Russia. It would indeed be a awesome marketing campain, as everyone in the world (i think) know the reputation of their post offices and how well they work... i dont know why BFL haven't tought yet on that, as it would solv all their problems...
Ship smth to Russia work so well and fast that some airports dennied a few months ago to work with Russian Post Office and stop reciving shipments while they didnt solv the problem, duo to have all warehouses full...

Well its true that they fired the bosses and got a new administration but as they say it will take months to recover that backlog and yet i got my doubts that would solv the huge problem that is ship smth to Russia...

The device (prepared by Metabank) in Russia, but the chips worldwide.
Have you read about 100 TH/s bitcoin mine investment?

what is the relationship between punin and bitfury? why punin is waiting chups at Taipei?

I'm actually using that exact chip. You won't need to worry about bit rate though, the SPI bus is not going to be anywhere near that.

Just wondering: Why involve all these non-russian testers if the device can only be shipped to Russia?

Not really a need, no bi-directional pins.  Safe enough given current to use resistor divider based level shifters.

level shifting from TI - this might work - 380mbit/sec
http://www.ti.com/product/sn74avch4t245-ep

or select better here

http://www.ti.com/lsds/ti/interface/voltage-level-translation-products.page

S-HASH says 'hello world' :



intron

Quick & dirty level shifting using discrete components:

https://mega.co.nz/#!7dk3VABY!CUQ27A_bGJLL6O6KfWhnRw9rXsEPJfnm54GGeVI9aMY

Don't know if I'm a bit late to this but just saw your thread. I would be very interested in helping to test your chips. I am a research engineer at a company that specializes in developing prototype scientific equipment and my primary duties include electronics design and testing and PCB design. I am very much familiar with proper power conditioning for sensitive chips including bypass caps, PCB power and ground planes, optimizing trace inductance and resistance, as well as shielding from EMI interference and eliminating stray capacitive loads.

I have free access to precision laboratory power supplies, signal generators (BNC 575 up to ~10 GHz), and oscilloscopes (Tektronix DPO2024 1GS/s), I even have a $5,000 scope probe (Tektronix TDP1000) that is excellent for measuring fast sensitive signals while injecting minimum noise, with very high impedance and <1 pF capacitance. I am skilled in prototype soldering (dead bug, etc) of tiny chips for a variety of precision analog and digital electronics applications. If you would like, I can send you a photo of my lab with all the various high end test equipment I have available. I also have experience with C-coding for Arduino and raspberry pi devices.

I have a thread where I offer PCB & electronics design services here:

https://bitcointalksearch.org/topic/professional-pcb-electronics-design-rapid-prototyping-testing-206853

And have two clients so far. I am relatively new so not a whole ton of reputation yet in the community but am hoping to build it up. I would be willing to provide detailed photos/diagrams/reports regarding the testing of your chips and could also quickly develop, order, and assemble a prototype PCB to mount them on.

Let me know if getting a few chips to test would be possible!

Thank you very much for your consideration.

I'm an engineer in micro-electronics and have most equipment to start using point to point construction.
I don't have time for reverse engineering, so I do need the datasheets and pin layouts though.

I think it will be impossible to solder trimmer directly instead of resistor (0603 size). Too small.

Yes it can be changed with trimmer to set different values of the output voltage. I have used these boards in other projects and they are rock solid, here are some measurements from TI http://www.youtube.com/watch?feature=player_embedded&v=HJSaIqWzM9w#! , this board will handle 4 - 5 chips. I have received some other suggestions from forum memebers due to the higher price of this board but if we compare it to the other evaluation boards it is even cheaper so for me this is the best buy, we can use lower priced modules with good results too such as D12S05020 http://pdf1.alldatasheet.com/datasheet-pdf/view/427198/DELTA/D12S05020.html , http://www.digikey.com/product-search/en?x=22&y=22&lang=en&site=us&KeyWords=D12S05020 

Yeah,

I'm planning to use the same eval board. One resistor must be changed as the board is configured to 1V.