No, I got samples but for the first board I'll place 1 manually after testing the power supply, and PIC first. I wish I was perfect but one wrong part placement in the power supply and you could end up with 12V going into the 1.2V line, or who knows what else could be wrong. I'd rather test it first, then test the PIC can communicate via USB (which it should be good for now), and then place an ASIC and test that communication. When there is too many unknowns it's best to go step by step.

(There are so many details. I didn't even realize until I wrote that above that the stencil I was using for the K1 was without NOR gate as well, from last week. So I need to cut a new one for the K1 too, with NOR gate.)

Burnin has his ASIC communication working now, though I don't know the details. I'm hopeful that mine won't take too much work either.

I love to see underpaid Chinese at work.
Just hope they ship fast.

FUD everywhere by people who can't do math.

1. these are not batch #1,2 or 3 units.
2. all the openWRT firmware is burnt from a single image in batches,
3. the openWRT is used in more than just production units.
4. all burn-in is 24 or more hours, you all think we seriously only would have 700+ bitcoins if they were mining? LOL
        I can't believe I'm repeating myself by saying we are not mining with batch #2 or #3 units.
5. complains will just lead into refunds, since clearly people are not happy with Avalon ASIC.
        personally I'd love to issue these refunds so these people can go find the next thing to complain about and I can get some peace n quiet.
6. I'm going back to deal with trade-in and damaged orders.

Just to update everyone in case it's not clear:

I've arrived back from Bkk and have sample chips from steamboat, final needed parts from Mouser, and K16 boards from China. I will be initially testing power supply on the boards and then PIC on the K1 and then mount an ASIC on a K1 for comm. tests. So barring unexpected set backs (like solder paste that turns out to be useless), I should be able to report something on ASIC communication within a day or two.

You may want to look at FPC or ribbon cable w/headers to tie the klego connectors on each side to the next side. Usually side-side would use a 2x5 pin header wired correctly, but since you have a corner to wrap maybe a short 3 lead FPC type connector could be fitted. Or possibly if the spacing is right a right angle header on one side matched with a vertical on the next would line up.

That's great and all but I don't know that your group buy thread is the right place to advocate a new venture.

*********************
Initial Release 0.1.0  
*********************

Just pushed to GitHub.

Please read the RELEASE NOTES as it explains a bit about why the schematic is the way it is.

The README has been updated to try and keep up with the current TODO list and license files have been added, and updated in the source code. I cleaned up the firmware project files a bit so that not as much USB SDK sample junk is left behind. I'll probably be fixing a few things for a while yet.

I think I'm taking a bit of a plunge of faith here in the Bitcoin community. I know it's full of all types, from both ends of the spectrum here - those who will hack and steal everything and those who contribute and support the efforts that made Bitcoin even exist. Everyone in the Klondike thread has been very supportive and I choose to give back what I can - maybe everything will work out and having this out will give everyone the best chance to have working mining boards when ASICs arrive. I'll be continuing my efforts to make that happen.

As I started this project hoping to expand my own mining from GPUs and keep up with changes I couldn't afford to buy into, I'm trusting I wouldn't have been better off keeping it all secret.

NOTE - This is not final code or design at all. I will be writing and re-writing parts, and adapting.  If you're wondering how it's possible for something to work when you can't find it, then it's probably because it hasn't been written yet.

"2.5 Watts USB Miner Outperforming Your Graphics Card. No Pre-Order. Get Them Now!"

No it does not

Considering  resale/reuse value of a video card, and hash/$ ratio erupters suck at that price. Electricity cost gains do not cover that gap.

https://www.stackpop.com/configure/colocation/singapore/singapore/singapore/19885
4 kva for 42U $2500 / month
125 x K16 = 4 kva
125 x K16 = ~3 K16 per 1U  (most likely there are some unusable slots, use for switches, spacing, etc)

https://www.stackpop.com/configure/colocation/united_states/virginia/ashburn/17237
24 kva 59U for $1000 per month (or $2000 unsure if power is included or extra)
750 x k16 = 24kva
750 x k16 = 12.7 k16 per 1U or ~51 per 4U  (most likely there are some unusable slots, use for switches, spacing, etc)

But these can only be used once stability of these devices is proven, to not need much babysitting by hand.

Cramming higher density into 1U is only viable if you are hosting the rack on your own premises and can arrange adequate cooling.. But then why would one use 1U and not bigger cases where u can have better airflow using more efficient bigger fans.

The address is always 000 for the primary USB board, and >= 001 for subsequent chained boards. For chained boards it simply relays the cmd to the I2c bus.

The primary board auto-detects what chained boards are present using "serial# as address" arbitration and assigns a unique I2C 7 bit address. So the possible range for destinations the host can talk to is 000-112 (some I2C addresses are reserved). This would be the max boards per chain. I didn't go with 10 bit addressing as it would probably be beyond the limits of what even 400kbps could support on I2C, and at first I'll be working with 100kbps until there's time to test faster. And there's no real need either - at the USB level having 100+ boards on each port of a hub is economically cheap, and more flexible.

Each PIC also auto-detects how many chips are on board and adjusts it's work splitting to match. The number of chips is relayed as status info for the host but the host doesn't really need to know - more for user overview, monitoring problems. - BKKCoins

Bitcoin ASIC mining board project

WARNING:

This project is incomplete and in progress. There may be errors, mistakes, incomplete portions at this time. Do NOT use these project files to order circuit boards until they have been finished and confirmed to work.

SUMMARY:

This is an open source effort to design and build a Bitcoin mining board based on the Avalon ASIC. The final goal is to have a small 10cm x 10cm board that holds 16 ASIC chips. This board can be controlled via USB or I2C communication. An example host would be a PC, Raspberry Pi or TP-Link WR703N router. The host will run cgminer with a custom driver based on the Avalon one and control the board via USB. The I2C interface allows chaining together more than one board consolidating control by the host system using only one USB connection.

Each board has a 6 pin PCI Express power connector allowing efficient powering of many boards from an ATX PSU. A 16 chip board should be capable of 4512 MH/s and consume about 32W power. A low cost Corsair CX-600 PSU should easily power 16 boards using readily available power splitters. This provides for 72 GH/s off one low cost ATX PSU.

STATUS:

The PCB routing is currently done and I'm making small changes to tidy up, improve and double check the design while waiting on the Avalon communication protocol docs. After they come out I'll finalize any changes and order first prototype boards. During the waiting period for boards to arrive I'll be coding / debugging the firmware and hope to have something workable to program into a test board when it arrives.

COMING SOME DAY:

Kicad Schematic and Board files

MPLAB-X Project and source files

Great idea, will do that. Thanks.

BKK - add a donation address to your signature pls. I wouldn't mind contributing and I'm pretty sure there will be others.

What about a wiki?

Thanks a bunch for starting this thread, super helpful.

All those supporting BKK please let me know and we can all support the shipping cost equally. Please give us a wallet address for shipping costs for BKKCoins only Raging.... also  Noitev we can reimburse you later if you like as we all should really split that shipping cost fairly.

I pledge whatever amount of chips I am supposed to be allotted to BKKCoins and I will keep track in this post. Please tell us what the shipping costs to Thailand will be?


Pledged Chips to BKK

Bicknellski (540)
Noitev (592)
bigbeninlondon (20)
Vycid (128.21)
bassclef (95)
erschiessen (51.28)
Kushedout (300)
pierrejo (69.72)
SteveB (40)
dan99 (68.36)

Total 1904.57

1904.57 / 10000 chips = 0.190457

0.190457 x 30 =  5.71371 (6) sample chips

We need to PM BKKCoins and coordinate shipping ASAP he can actually use even 1 chip if possible right now. Anyone else pledging chips for BKKCoins do so soon and let others know about it so we can get him more.