Topic: The Chili – 30+GH/s BFL based Bitcoin Miner Assembly - page 41. (Read 138054 times)

 35Gh is ok, it means your power side was running too hot.

What is the temperature reported from your miner?  If it is around 70c then its reasonable.

i put a fan now it is hashing at 35gh does that mean my heatsink contact is bad?

If your heatsink to chip contact is good then try this.  If the heatsink contact is bad then the chips will stay slow.

Get a fan blowing onto the mosfets,  The core temp should rise to 70c and the hash rate will rise. 

 32Gh without mosfet cooling to 35Gh with mosfet cooling is the minimum I would be looking for.


If the mosfets on the power control get too hot, it will throttle the board.

it is working now and all good

but i am getting 29.39 ghash is there a way to get more out of it?

temp is 55

Depends on volume, but probably not. A lot of it will depend on what kind of price you can get for the ASICs themselves, as at list price they're more than everything else combined. For our part of it, an order of 100 boards is enough that it takes you out of the very expense realm you pay for runs of 10-20 or so for prototypes and the ludicrously expensive cost of doing a few, but it's not nearly enough to get down to even the costs we saw in our first batch (which was 3x larger than our second batch).

just received my chilli i connected it to my raspberrypi and i am gettting failed to send queue message and retry in 1 second

it is detected and temp is 30 degrees

any ideas?

Thanks

i got it working on bfgminer on windows but it is only getting 22gh

what do i need to get it going on windows till i figure it out on raspi?

On windows, the direct USB support requires the installation of a WinUSB
driver (NOT the ftdi_sio driver), and attach it to the chosen USB device.
When configuring your device, plug it in and wait for windows to attempt to
install a driver on its own. It may think it has succeeded or failed but wait
for it to finish regardless. This is NOT the driver you want installed. At this
point you need to associate your device with the WinUSB driver. The easiest
way to do this is to use the zadig utility which you must right click on and
run as administrator. Then once you plug in your device you can choose the
"list all devices" from the "option" menu and you should be able to see the
device as something like: "BitFORCE SHA256 SC". Choose the install or replace
driver option and select WinUSB. You can either google for zadig or download
it from the cgminer directory in the DOWNLOADS link above.

When you first switch a device over to WinUSB with zadig and it shows that
correctly on the left of the zadig window, but it still gives permission
errors, you may need to unplug the USB miner and then plug it back in. Some
users may need to reboot at this point.

just received my chilli i connected it to my raspberrypi and i am gettting failed to send queue message and retry in 1 second

it is detected and temp is 30 degrees

any ideas?

Thanks

Hello Mr. Teal,

you told in the past there was a problem with the board by mounting the asics.
What was the problem exactly? I understood the most of the tin-soldering-balls of the asic has to been flooded the holes completly or over the strip-lines?
I've only the photo in my mind which you post here. It looks a little bit there or the mask was not printed to the asic chip area to stop flooding the tin-solder over the whole strip line. In this case there is only a little bit missing of tin-solder.

I want to prevent me from this problem so maybe compensate the situation by a little bit soldering paste filled to the holes ?

Another question, as I understood in this discussions was not only the cooling of the chips is essential, also the cooling of the power chips is very essential. So it looks to me it must not be a big EVE 212 cooler needed only. Maybe a smaller is good, too but I should check that the power chips get there own heatsinks.
I plan to glue a heatsing on top and a big heatsink plate on the back for the power chip area.

I've now ordered two of the most more cheap Scythe Setsugen Rev. 2 Grafikkartenkühler VGA
https://www.google.de/images?output=search&sclient=psy-ab&q=Scythe+Setsugen+Rev.+2+Grafikkartenk%C3%BChler+VGA&gbv=1&sei=fjSHUuX_EMLItQam-oHACg&hl=de&sa=X&oi=image_result_group&ei=gDSHUr5_jcGzBsGUgOgK&ved=0CDIQsAQ
which could be buy in germany from < 22 € and plan to mount them in a way the air flow will be go through the top heatsinks of the power chips.
The heatsink itself is know to handle ~ 200 W which should be enough to cool the asics.
On the back I want to mount a heatsink as bfl did this with the little singles.

I hope it will work ;-)

But in fact, can anybod give me the mechanical dimension from the board and the holes so I can prepare/check my 19 Inch server rack case for mounting some of them? I would like to bring the case in a air conditioned server room which is only possible if I mount them in a server case as I allready did this with my knc miners ;-)
I want to calculate how much asics I can mount in one case. I think 5 should been possible but I need
clarify that.

Cheers...