Maybe he should add shop product "assembled pcb without chips" and put price for it. If customer don't send chips in reasonable time he can downgrade order and refund rest? Should fullfit EU laws. He sends something. There are maybe some EU return policy which may complicate things?

And there are maybe customers who are interested to buy assembled board without chips + suitable (mylar?) stencil to add chips at home..

I am not burning. Only person who give you offer which you answered no.

Burning don't have time to mail/talk he is busy in assembling boards. He had got more chips as you shoud know. He 1st. priority is do assembly and ship boards to people. After that is done he maybe have time to talk - or use time to develop bitfury chips. But next 1-2month he is ~100% busy in assembly / postage things. Right?

I looked some days ago K16 board and U24 NOR clock pulse generation circuit look like it dosn't generate clock pulse from first bit in reporting line. Am I right?
 If reporting protocol is same than avalon-ref send0/send1 first bit may loose. But reporting protocol is not documented at all..

It is quite easy to calculate missing bit as firmware do but if this is real bug it should fix in hw?

I asked from BKK pm, but not reply yet. Hope I am wrong

It is answer for your questions how much you get back. Next ~5.45hrs 1/2 of amount, after that maybe nothing?
You bought something - look valuable when bought. Not any more. I have same broblem but I have not lost my patience.

So please don't pollute that thread any more for refunds. You got your answer.

Put parts reference (white paint on pcb). Big power inductor is
L2 0.47UH, 20%, 30A IHLP4040DZERR47M11
L26  1.5UH 10A 20%  SPM6530T-1R5M100
C522 470UF, 25V, 105°C EEEFP1E471AP

Hope burnig dosn't got angry about nda, but it save one support ticet from him.. And thing should go GPL later and that information is quite easy aqquire from board pictures anyway..

Component value is quite minimal. Only posible valuable thing is position to get avalons board with tested build.

I can offer for your positions (if they are real - need to check from burning) of total 30 board all with 20 avalons (I send avalons to burning) total 1500eur.
I can send money to burning and him can refund you. In this case I trust burning more than you. And he is busy - do customer post in night ~3.00 (time to he should sleep).

Do you accept? And this offer is valid only 12hrs.
I can iban money to burning tomorrow in bank time.

http://klondikedesign.com/

Shop disappeared?

Sold out..

I have quite low time to own project. I have only time to share some ideas.

I'll like add 64pc to my previous order thank you. Can you send btc amount to cover components costs?

Maybe board change to with new reg?

Maybe pic change to 32bit series? 32MX795F512L is less than 9$. 80Mhz, Ethernet, 512K ram, 85 IO-lines (over 300 avalons per one motherboard if use per 8 lines one clock line and 7 datas to drive one 70 pcs avalon bank in seven chains.) Six uarts.

Separate avalons and pic. As bitsyncom done. Simple reg + 10pcs avalons + buffers in one board. Motherboard with simple pinheads to plug/cable avalon stics.
 And if something fails you only need replace one 10pcs avalon card or build new motherboard.

And motherboard with populated ethernet parts it can done later standalone firmware. First versions can do fine with ~current fimwares and usb + cgminer.

Now K16 cost: 2xIR3895 ~5$, pic ~2$ per 14 avalons (if OC'd regs can't drive 16pcs) means 7$/14=0.5$ reg+pic price per one avalon.
 If 60/80A reg can done for 5$ and one ~10$ pic32mx795 are used say per 280 avalons -> 0.036$/chip, + 60A reg per 20pcs avalons -> 0.25$/chip total ~0.28$ per avalon chip or ~50% cheaper.
 Calculation are crude and don't include ferrite, caps etc price, but they are ~equal for same amperes so don't affect much.

One more thing for separating boards: you can populate motherboard later full. You can maybe later add bitsyncom addon cards.
Or maybe even mix bitfury chip in some chain.
 So general motherboard with plenty of IO's and many asic chips chains boards. Types for water cooling, 8, 10 14 chip chain lenght etc. Diffrent alternates if some component are out of stock.

Maybe time to start kolondike V2.0 plans?

Same for me. It is also ok desing with new regulators because IR3895 are out of stock. There are other posibilities also with lower $ per ampere. With higher efficiency too. Two ten rows of avalons are ok too. Look burning board 60amps(80A if properly cooled). Can do 450Mhz.

Standard board are useless until IR3895 are mfg more. Who knows how long it take?

I can wait until complete kits are availabe in shop. I don't care which component mix/alternatives it have if githut have such version board to download. I have maybe posibility to use pnp machine. So components on roll/tape are best.

I'll solder, and they are good. Don't worry. 450@ ~40..45C

OK find this:
"Exposing the copper on the bottom will increase the thermal coupling but i want to keep the heat sinks isolated.
(Important for water cooling, electrical corrosion)"

Well it makes difficult to solder heatsink on painted surface and using stripper will remove all paint. Not good. Electrical corrosion blah. If use same ground no broblem or use non conducting coolant.

Fridge starts and K16 reset itself, laptop USB port generated noise lead 10% hw errors, but raspi usb port "only" ~1-2% hw erros. But you can read more in kolondike thread from pages ~80 -> (but do more important jobs first so we get boards

Btw have your PCB's bottom full painted? I mean have chip thermal vias solder only? (Solder is better heat conductor than paint). Your three test PCB have full painted bottom. Avalon boards have paint free squares.

Kolondike have two chains 8 chip per chain. And weak regs so if plan oc ~ 6 chips per chain.. (and some communication broblem if "full" eight chip chain are used, atleast first pcb versions. And super sensitive to emc noise..)

Burning boards have ~320 parts and pnp machine handles ~22000cph. So ~70 boards per hour. He can handle over 10000pcs avalons in normal 8hrs workday. But broblem arise from postage. It takes lot of time to pack boards and post to many customers. If average order is ~200 avalons ~10boards it means 50 pack/post per day. And he is alone and have other work too. But if things gone well he handle all orders in week.

Burning test pcb bottom are full painted. Orginal avalons have solder square in every chip locations. I think solder is better heat conductor than paint. Maybe he corrected it production boards..?

Yes, but I think order only ~10pcs bare pcb. And like to get ethernet version, but I have also junk computers with usb if ethernet are not availabe.
 10000pcs avalons need ~30kw. Over 50A three phase 400volt mains are needed. 40000pcs avalos needs so big mains that only rare places have it. And I don't have 40000pcs avalons and no ideas how to get them in my hand
 btw 200000$ is not enough for 40000pcs if follow burning list price but maybe he can give some bulk price..

bitfury standard size is 400Ghash. I'll like to get them say few containers but lack some 10⁶ euros..

Ethernet mac chip for pic32mx7xx cost ~0.99$ (in reel), rj45 socket less 0.5$, some xtal, res, caps etc and ~2cm² PCB area. Say total max 4$. RJ45 socket can leave unpopulated so customer can solder it if need. Other parts pnp machine lay board <0.1s.

One board can act master and chain other 16.
I see raspi ~50$ vs. ~4$ (plus onetime code/firmware generation = port cgminer to mips and some micro tcp stack).

If burning boards are done say 2000pcs and every 16 needs raspi -> 125 x 45$=5600$. I can't say is it enough to modify board now. Atleast it reduce one board + wires when suitable firmware are done.

I see it good option, not reinvent wheel.

Hello I fast browse your thread, but don't find any info how pic (32MX795F512 in demo board. Same chip in production version?) firmware updates are handled?
 If your firmware have bugs/improvements how installed boards are updated? Can it done through CAN bus chained board?

Have you released pic sources yet?

PIC 32MX7xx have ethernet. Have future boards ethernet socket? (maybe somebody develop standalone firmware to avoid raspi..?)

When you plan release BOM? BOM and PIC firmware(/source) are needed bare PCB order customers..

One month newer (0.201306251957):
https://launchpad.net/~adamwolf/+archive/kicad-testing-daily

Maybe alien can fit it fedora?
Ubuntu (etc&):
deb http://ppa.launchpad.net/adamwolf/kicad-testing-daily/ubuntu lucid main