https://bitcointalk.org/index.php?topic=190731.msg3115839#msg3115839

Quote from: zipiju on September 09, 2013, 07:02:12 PM

Quote from: btceic on September 09, 2013, 06:51:25 PM

Quote from: zipiju on September 09, 2013, 06:33:44 PM

Quote from: mjmvisser on September 09, 2013, 02:31:49 PM

Quote from: Darktongue on September 09, 2013, 02:25:06 PM

I don't think everyone needs to.abandon. For the sake of community development. I'd say we finish the project. If a handful exist that's okay. I understand people are MIA as well as nerve racked. That is why I believe wr need fresh hands and eyes on this project.

Absolutely! I'm not advocating we abandon the project. But there's no point in continuing the design using first-generation Avalon chips. They are obsolete. At this point, with an assembled board in hand, if you mine forever, you will not make back the cost of the miner. However, we can retarget for a different chip and, at the very least, break even.

The design is fully functional, the only thing that needs to be finished is firmware.
I have two boards hashing with only one side (with 8 chips) at about 3Ghps, ~3% ER (without USB ferrite beads), chips overclocked to 375MHz with no overvolt. Other side on each board has few chips that do not respond, but this is because those chips were poorly soldered. And on every board it's different side. Tried to fix it yesterday, but was unsuccessful, and now waiting for solder wick and isopropylalcohol.
I've also tried some modifications in firmware for 16 chips, but it wasn't really usable. The board with that did hash faster, but had around 20% ER - which is a firmware and poorly assembled chips problem, not the design one. Now waiting with this until I fix the other side, then will continue working on FW.
Tried also to contact one of the companies, that claimed to have fully working board (with firmware that hash with all 16 chips), but they did not respond. Anyone here can guess why.
About the ROI, it really is gone now, but you have to take into account, that BTC price will likely go up, so even if you lose now, you can gain later. Especially if you've already made an investment in the HW, chips etc.

Edit:
And about changing the HW for next gen Avalon chips (or any other chips), who is going to make this? Bkk seems to be gone (probably get sick of all the events regarding chips delivery, companies taking advantage of opensource project and giving nothing back) and there is noone (even in the group of those companies, which started their business on this) who is able to make this change.

Is it not possible for you guys to use TerraHash's stuff? They said they have working k16's with less than 1% error rates.

What Terrahash stuff? They have used stuff that Bkk made as opensource. To be absolutely clear on this, I've wrote to them about mine board with 4 chips assembled hashing at 400MHz with around 0.6% ER, when they were asking me via PM about the changes in HW I made to get it working. They were not able to fix even this for the whole time. They claimed even here on this forum, that the design is wrong.
Later, when they did claimed at 5th of September, that they do have a working board, and the only issue there is I2C, I've wrote them again, asking what firmware changes do they made to hash with all 16 chips and that low error rate.
They didn't even bother to wrote me back.
So what do they actually have? Nothing? Lies?