Hacking a BFL Jalapeno to 32GH and beyond....(???)

[freddyfarnsworth]

On a side note, I think I see the issues with the singles; BFL really screwed with the firmware to try and keep them from blowing up. However with the later model heat sinks this is not so much a problem, however you can't just flash them. You need to also add some heat sinks and ensure the airflow is right.

I think I have it down pat here; is anyone interested in the details and such once I get it done? So far I have a 23gh single running at 28+ with no heat problems, but a number of temporary sinks.

C

Go ! GO ! MOAR yayayayayaaaaaaaaaaaaaaaa.

Pix of that new cable and sink layout when you can ....

Before BFL or someone hires ya, and has you sign a NDA

[lightfoot]

Will do. I think I'm going to try a corsair 100i for my third jally when I take it to water cooling. The Sedion is good, but not quite as good as the larger radiator on the h100. And the h100i is supposed to have more surface area, which is *all* that matters here.

C

[ManeBjorn]

Carrying over from the other thread.  This looks great. 
I just bought a bunch of gear once I get my BTC amount back up I will get a hold of you and have you upgrade mine.  That's great work.

[hyphymikey]

I have a LS30 that I flashed and now I'm averaging about 34-35Ghs. It runs anywhere from 68-70C so I am thinking about watercooling it. How easy is it to mount something like you have?

[bcp19]

On a side note, I think I see the issues with the singles; BFL really screwed with the firmware to try and keep them from blowing up. However with the later model heat sinks this is not so much a problem, however you can't just flash them. You need to also add some heat sinks and ensure the airflow is right.

I think I have it down pat here; is anyone interested in the details and such once I get it done? So far I have a 23gh single running at 28+ with no heat problems, but a number of temporary sinks.

C

You reflashed the firmware and added more heat sinks?  So you're not seeing the slowdown you mentioned before when you re-apply power?  That sounds like a strange firmware problem... or are you saying the firmware was to try and keep it running cool?  I was thinking from your description of it slowing down to low teens that there was a bad component on the board, which when hot was sending bad information, which screwed up the firmware.  Do you have any pics of your changes so far?

[vapourminer]

On a side note, I think I see the issues with the singles; BFL really screwed with the firmware to try and keep them from blowing up. However with the later model heat sinks this is not so much a problem, however you can't just flash them. You need to also add some heat sinks and ensure the airflow is right.

I think I have it down pat here; is anyone interested in the details and such once I get it done? So far I have a 23gh single running at 28+ with no heat problems, but a number of temporary sinks.

yup, I would.

my little single has the aluminum heat sink, no baffle, one 120 side fan plus the 92 on the heat sink.

only 1/2 the long board is populated, the other side is pretty bare. one heatsink on the board aside from the main one for the ASICs.cant remember what its on, Ill have to take it apart again.

runs at 64-68C @ 31 Ghs (its a SC25 with stock firmware, runs at 31 though). running off a seasonic 750 that also runs the PC and the jally hooked to it.

[drmadison]

PM'd you about this but that cable I had was shipped out last week - should make it there in the next couple of days...hopefully that will help with some power issues

Thank you for sending it. It's amazing, beautiful,

And almost set my supply on fire. Specifically I plugged it into two 7 chip jallies, and my supply. Ran it for a few hours and checked it. The ATX molex connection was *hot*.

So I pulled one unit off and back onto the hard-wired connections and all is well. Moral seems to be that 7-8 chip units pull an incredible fuck-ton of power, so hard connections are where we need to go.

I'll think about it a bit more over the next few days, but for the smaller jallies it will be perfect. Thank you for sending it to me.

C

Youch!
It was made to power 2-3 "normal" jallies. Your machines are just to beastly I guess!

And (no relation to this specific quote) would love to hear more of your work on singles...I have 2 50GH (can't remember what they call them, little sc?) that I'd love to boost.

[lightfoot]

Youch!
It was made to power 2-3 "normal" jallies. Your machines are just to beastly I guess!

And (no relation to this specific quote) would love to hear more of your work on singles...I have 2 50GH (can't remember what they call them, little sc?) that I'd love to boost.

That's ok. I looked at it, and it's three power cords, each cord going into one of the 12 volt lines on a PCIx connection. The issue is simply that each of my turbo jallies pulls 4 times as much current as a normal one. So instead of feeding 3 jallies, it was feeding 12 of them. :-)

On the positive side, the barrel connectors can handle the current load, so I don't have to replace those. But it is a pretty big bit of power draw.

C

[Drug5bitz]

I have a problem with my unit, I use an AVR ONE ti can't read the device like you can see on the screenshot

This is why literally EVERYONE said "Just get a dragon it's only $50.". I don't know how much other programmers work but that's why you read before you click. This also isn't the correct thread for this, there are a few other flashing threads. Go read through the 40+ pages of info, it's a plethora of knowledge. Also make sure you have the 256kb chip and not the 128kb, this literally makes all the difference.   

[int03h]

I have a problem with my unit, I use an AVR ONE ti can't read the device like you can see on the screenshot

This is why literally EVERYONE said "Just get a dragon it's only $50.". I don't know how much other programmers work but that's why you read before you click. This also isn't the correct thread for this, there are a few other flashing threads. Go read through the 40+ pages of info, it's a plethora of knowledge. Also make sure you have the 256kb chip and not the 128kb, this literally makes all the difference.   

I use the device that I have to not buy a dragon just for the jalapeno. Thanks anyway

You too smart .. we too stupid .. they try help you not accept .. idiot.

[southerngentuk]

I have a problem with my unit, I use an AVR ONE ti can't read the device like you can see on the screenshot

I just flashed my LS with a raspberry PI, if you have one of those to hand. 

I flashed GenTarkin firmware, what firmware are you guys using. I have gained about 1.5G per unit but am still under the 30G spec, would be G8 to get them to 30G they are suppose to have been. 

[otsaku]

This is about the best thread on the forum, following step by step takes a lot of the fear out of the equation.

I really want to add chips to both my jallies but can't find any. SO anyone have or know where I can find some - looking at four to six chips. Preferably in Europe but at the right price I'll suffer the import tax at this end.

Thanks in advance.

[lightfoot]

This is about the best thread on the forum, following step by step takes a lot of the fear out of the equation.

I really want to add chips to both my jallies but can't find any. SO anyone have or know where I can find some - looking at four to six chips. Preferably in Europe but at the right price I'll suffer the import tax at this end.

Thanks in advance.

ceecee apparently has chips in europe..

[otsaku]

Thanks I've sent him a message.

Additional:

On the cooling front, I'm resurrecting an old freon unit I used on an overclocked quad board 10 or so years ago.

[lightfoot]

On the cooling front, I'm resurrecting an old freon unit I used on an overclocked quad board 10 or so years ago.

Freon? Wow.

[Drug5bitz]

Thanks I've sent him a message.

Additional:

On the cooling front, I'm resurrecting an old freon unit I used on an overclocked quad board 10 or so years ago.

+1 if it can be done it should, good luck man and make sure you let us all know how it goes.  The only other option I researched at the beginning was mineral oil but cost out weighed air by a bit.

[lightfoot]

Thanks I've sent him a message.

Additional:

On the cooling front, I'm resurrecting an old freon unit I used on an overclocked quad board 10 or so years ago.

+1 if it can be done it should, good luck man and make sure you let us all know how it goes.  The only other option I researched at the beginning was mineral oil but cost out weighed air by a bit.

Hm. I wonder if I can immerse it in a tank of mineral oil, then put *that* into a 50 gallon rain barrel. Would the surface area of the glass be enough to allow the heat to radiate into the rain barrel's thermal mass....

That's a project for spring. :-)

C

[ManeBjorn]

Thanks I've sent him a message.

Additional:

On the cooling front, I'm resurrecting an old freon unit I used on an overclocked quad board 10 or so years ago.

+1 if it can be done it should, good luck man and make sure you let us all know how it goes.  The only other option I researched at the beginning was mineral oil but cost out weighed air by a bit.

Hm. I wonder if I can immerse it in a tank of mineral oil, then put *that* into a 50 gallon rain barrel. Would the surface area of the glass be enough to allow the heat to radiate into the rain barrel's thermal mass....

That's a project for spring. :-)

C

That could be good but how warm are your summers?  Our rain barrel turns into bathwater during the summer I don't know how long it would move lots of heat.

[Drug5bitz]

The above is something to think about. The only other concern with mineral oil is that if any components are cheap rubber it will slowly dissolve them. This was my main fear before I realized all the capacitors seem to be a metal case. It seems like just the USB and power wires might pose to be a problem.

As for circulation and heat dissipation, you literally put the electronics in a tank and have a pump moving the oil through a radiator. It's almost exactly like water cooling but if you have a leak it doesn't fry your shit.  There is like a 0.01% loss of oil if it's mostly contained. ie if it condenses on a hose or wire and drips down = loss. 

All this effort only concerns me with the hashrate changing so quickly. What will it be like in a year? Either way I have enjoyed the hell out of this thread, everything I got to contribute, and of course the various help from community members. Great job everyone who's been here.

[miaviator]

Hm. I wonder if I can immerse it in a tank of mineral oil, then put *that* into a 50 gallon rain barrel. Would the surface area of the glass be enough to allow the heat to radiate into the rain barrel's thermal mass....

That's a project for spring. :-)

C

From what I've seen and done the mineral has to be moving in order to adequately cool anything serious.  (*Imagine the glass tank in a snowbank, I'll look for pictures)