BFL board project COINTAMINATION - EU facility - ORDERS OPENED for Chili

[Min€r]

What is the planned production schedule for batch 3?

Not sure what you mean with batch 3. But I'm currently at 38,5C... So I'm out cold to... Will do my best to send some boards tomorrow but we are snowed in at the moment so not sure if I will be able since it was snowing like crazy whole day and it is still snowing... I'm working on a first in first out bases... Unfortunately you are second to last in this "batch 3" if I understood that question right...

Would be cool to get them as soon as possible... a huge thanks for your work.

[asjfdlksfd]

I got my boards back from ChipGeek and got the first one assembled. It does a very slow ramp up on the volts but as soon as it hits 1.1v it crashes.

I've some  which have >= 25 engines. I do not active cooling strong the psr chip area so the temperature will limit the voltage below 1.13 V. Mine mostly crash above but not below. So mostly they are stable hashing now.

And yes, we are need a voltage limit for boards above 25 Engines. Maybe we can have a small formula which will calculate the endvoltage maybe if engines > 24 then 1.16 V - (noOfEngines-24) * 0.02 V elseif <=24 1.16 V else 1.1 V or so ;-)

Another way is to store the voltage at the crash, decrease it a little bit and use this as a new upper limit at next time. In this case we need only one fw for all boards.

Cheers...

[asjfdlksfd]

For the limiting firmware, there is a 14g under development now that besides having several features and enhancements for everyone includes some that should specifically help your run of boards. The slow ramp to help heat the boards will be more efficient and will be active at the time instead of just on the startup. As well, the board will drop to idle voltage (0.9V) if there is no work and then slowly ramp back up. That should help prevent resets in the case where the board cools due to lack of work and then starts back up.
The maximum voltage will also be configurable through a z command, so a user can tweak that parameter on their own rather than having different firmwares for different voltage limits.

These are really great news. I'd like to pretest ;-)

Cheers...

[MrTeal]

I got my boards back from ChipGeek and got the first one assembled. It does a very slow ramp up on the volts but as soon as it hits 1.1v it crashes.

I've some  which have >= 25 engines. I do not active cooling strong the psr chip area so the temperature will limit the voltage below 1.13 V. Mine mostly crash above but not below. So mostly they are stable hashing now.

And yes, we are need a voltage limit for boards above 25 Engines. Maybe we can have a small formula which will calculate the endvoltage maybe if engines > 24 then 1.16 V - (noOfEngines-24) * 0.02 V elseif <=24 1.16 V else 1.1 V or so ;-)

Another way is to store the voltage at the crash, decrease it a little bit and use this as a new upper limit at next time. In this case we need only one fw for all boards.

Cheers...

Actually, the plan with 14g is that it will limit based on current as well as voltage, so if you are nearing the current limit of the PSU it will reduce frequency/voltage to keep the regulator from reaching its current limit fault. It's then dynamic based on operating conditions.

[Mudbankkeith]

Actually, the plan with 14g is that it will limit based on current as well as voltage, so if you are nearing the current limit of the PSU it will reduce frequency/voltage to keep the regulator from reaching its current limit fault. It's then dynamic based on operating conditions.

Hi MrTeal

Your plan for 14g version sounds good.

With your voltage control tool, that will allow us to customise each device to its best condition, also to take advantage of the quality of each PSU as well.(mix and match)

[minerpumpkin]

Lucko & MrTeal, are you looking into producing boards and products for the new ASICMiner chips (https://bitcointalk.org/index.php?topic=438359.0), as well?

[Mudbankkeith]

What cpu coolers do you guys use with these boards?

Any cooler would work?

http://www.newegg.ca/Product/Product.aspx?Item=N82E16835103099

What are the heatsink dimensions in your coolers?

lots of info on this thread:-  https://bitcointalk.org/index.php?topic=304250.msg4865297#msg4865297

[ronin4bits]

Update on my one running board.

It ran around 24-28ghs for about an hour the first day - right up until it just disappeared from the peon.

I reset a time or two and couldn't get it to run for a more than a minute at that point. I redid all the cooling and moved it to a windows box -reflashed the fw to the 1.1v limiting version. I was having tons of stability issues after that. I couldn't do anything to keep it hashing for more than 30 seconds. Hairdryer, nothing. {I also was getting some weird comm port issues, but I think that was the windows machine puking}

I moved it to a different host again (same psu) and decided to reflash back to the "normal" Chili14e fw. After that, things seemed to work much better for me. I do have to do the hairdryer trick to get it running. And it's hanging upside down with a cardboard shroud over the caps & fets - with the backside open to allow a small usb arctic fan on blast on the back of the pcb - it's a headache, but it's been hashing between 32-34ghs for about 18 hours like this reporting about 6% errors.  Seems the temp in bfg stabilizes at 70c when you get the airflow just right - then it runs.

Still waiting on replacement capacitor to fix the other one.

https://s3.amazonaws.com/img_host/20140131_234257.jpg
https://s3.amazonaws.com/img_host/20140131_234307.jpg
https://s3.amazonaws.com/img_host/20140131_234339.jpg

[asjfdlksfd]

What are the heatsink dimensions in your coolers?

You can use socket 115x coolers. My favorite ist teh Zalmyn CNPS10X Performa.

[Lucko]

Finally get internet working on my mobile long enough to post this. We have one of the worst natural disasters of the county history. We lost power about 48 hours ago and roads are practically undrivable... A lot of ice and show... So trees are foaling on roads and power lines... 18% of people is out of electricity... No idea how long I will be away... Running out of batteries...

[Min€r]

Finally get internet working on my mobile long enough to post this. We have one of the worst natural disasters of the county history. We lost power about 48 hours ago and roads are practically undrivable... A lot of ice and show... So trees are foaling on roads and power lines... 18% of people is out of electricity... No idea how long I will be away... Running out of batteries...

I can confirm that - it`s really bad here (2-3m snow & a lot of people are out of electricity).

[mmitech]

I can also confirm the bad weather, half of my coworkers didn't make it to the work today but I am lucky that my electricity and internet is not effected. 

[GrapeApe]

Finally get internet working on my mobile long enough to post this. We have one of the worst natural disasters of the county history. We lost power about 48 hours ago and roads are practically undrivable... A lot of ice and show... So trees are foaling on roads and power lines... 18% of people is out of electricity... No idea how long I will be away... Running out of batteries...

Hang in there...

[Lucko]

OK my road is open again

Home we are still with limited power only. Out of 3 phases only one is working from time to time... Not sure how much you know about electricity but generally that means that I only have power in every 3 device or power socket... Also only 2 lights in house are working... But luckily central heating is working again So I'm totally fine with things as they are...

In the time I was cut from the world MrTeal did send me posible fix to a problem. Will do my best to test it ASAP... Let just hope that today's weather predictions are wrong and I won't end up cut away from the world again. More ice rain and now also some wind...

Grate out of power again...

[asjfdlksfd]

Hello,

after asking Lucko I've 24 BFL chips left over for sale them to any one in EU who is interested.
I'm sitting in EU so I can send them directly to Lucko so he and also buyer must not pay any additional tax to transport costs. Transport costs from germany to Lucko with insurance are ~46 € via DHL.

For transport to germany they are not more ~ 8,50 €
For other destinations ask me for different transport costs or check them by yourself at http://dhl.de ord http://post.de
Because of export regulations outside of the eu community I would not send the chips outside of the EU.

For offers from 1 to 24 chips send me p.m.'s. I accept payments via SEPA or bitcoins. The price is based on €. For schedule and mounting ask Lucko, if interested.

I will edit this message later and add a photo of the chips, today.

[Min€r]

OK my road is open again

Home we are still with limited power only. Out of 3 phases only one is working from time to time... Not sure how much you know about electricity but generally that means that I only have power in every 3 device or power socket... Also only 2 lights in house are working... But luckily central heating is working again So I'm totally fine with things as they are...

In the time I was cut from the world MrTeal did send me posible fix to a problem. Will do my best to test it ASAP... Let just hope that today's weather predictions are wrong and I won't end up cut away from the world again. More ice rain and now also some wind...

Grate out of power again...

Nice to hear that you are ok - saw the pics of my friends.... their house was damaged by a tree & no water/heating too.

[Mudbankkeith]

OK my road is open again

Home we are still with limited power only. Out of 3 phases only one is working from time to time... Not sure how much you know about electricity but generally that means that I only have power in every 3 device or power socket... Also only 2 lights in house are working... But luckily central heating is working again So I'm totally fine with things as they are...

In the time I was cut from the world MrTeal did send me posible fix to a problem. Will do my best to test it ASAP... Let just hope that today's weather predictions are wrong and I won't end up cut away from the world again. More ice rain and now also some wind...

Grate out of power again...

Hi Lucko........
When this finally gets to you..........
(UK) We have winds, flooding and fallen trees, but not much snow .... yet...... and the power has stayed on where I live.
 The cables for the street lights gave up about 5 weeks ago, so its dark outside.
https://www.dropbox.com/s/ytykkpbhykvmg4i/2013-12-05%2012.59.11.jpg

[bx8389]

OK my road is open again

Home we are still with limited power only. Out of 3 phases only one is working from time to time... Not sure how much you know about electricity but generally that means that I only have power in every 3 device or power socket... Also only 2 lights in house are working... But luckily central heating is working again So I'm totally fine with things as they are...

In the time I was cut from the world MrTeal did send me posible fix to a problem. Will do my best to test it ASAP... Let just hope that today's weather predictions are wrong and I won't end up cut away from the world again. More ice rain and now also some wind...

Grate out of power again...

Hi Lucko........
When this finally gets to you..........
(UK) We have winds, flooding and fallen trees, but not much snow .... yet...... and the power has stayed on where I live.
 The cables for the street lights gave up about 5 weeks ago, so its dark outside.
https://www.dropbox.com/s/ytykkpbhykvmg4i/2013-12-05%2012.59.11.jpg

Thanks for update Lucko, We understand how is difficult to test these boards without a reliable power source...

** off topic
Here we have also some trouble with weather, wind and sea related, but is small annoyance if compare to most of north Europe. But always someone is able to take advantage of situation:
http://au.sports.yahoo.com/news/article/-/21254678/plumber-surfs-biggest-wave-ever-in-nazare-portugal/

[Lucko]

OK back... Well it is not that much problem only of power but internet working at that time on cell phone... It is hard to mine without that... ISP couldn't even give me a estimate at the moment when I will get internet back. So mobile network is overloaded...

Anyway I hope all this get fixed soon...

About the fix I got some PMs. It is replacing 4 capacitors and reprogramming VRM...

[Bogart]

Wow.  I looked at some pictures from over there and it does look pretty severe.

I hope the world gets back to normal for you soon over there, and also that you're no longer sick w/ a fever while all that's going on.