Specs on BFL Single power adapter?

[P_Shep]

Hey Mr BFL man,
If we don't need the included PSU, can we get a discount?

[1713933062]

1713933062

[1713933062]

1713933062

[1713933062]

1713933062

[rjk]

Hey Mr BFL man,
If we don't need the included PSU, can we get a discount?

I still think the idea of either a PSU or an adapter is a good idea for a choice.

[BFL-Engineer]

Hey Mr BFL man,
If we don't need the included PSU, can we get a discount?

We can ship your unit(s) without PSU (10$ reduction).


Regards,

[iambaboon]

ZTEX have a guide for adapting to a computer PSU:

http://wiki.ztex.de/doku.php?id=en:ztex_boards:ztex_fpga_boards:cluster_power_supplies

I guess it can be applied here, not sure about the power though.

[BFL-Engineer]

ZTEX have a guide for adapting to a computer PSU:

http://wiki.ztex.de/doku.php?id=en:ztex_boards:ztex_fpga_boards:cluster_power_supplies

I guess it can be applied here, not sure about the power though.

Connecting a computer PSU to BitFORCE units is very easy. For this, all you need is a barrel jack and a PSU. The center
of the barrel jack must be connected (or soldered) to the Yellow wire (providing 12Volts) and the outer-cylinder of the
jack is connected to the black wire (the GND). Please note that each yellow wire must be able to provide 70Watts
of power (that's around 5.83A per wire).

The jack needs to be 5.5mm OD and 2.5mm ID (OD=Outer Diameter, ID=Inner Diameter).


Regards,

[jjiimm_64]

Tentative good news.  OEM is considering the order a small run.  Not sure if it is past business or that the economy is slow.  In the past I know the have balked at runs below thousand units.  No idea on pricing yet, no need to respond saying you want one, and don't get your hopes up yet.

My contact called me back.  He asked for a wiring diagram to give to the team. Anyone have experience making wiring drawings?  
Diagram is pretty simple but my graphical skills are lacking.  If anyone has experience and wants to help let me know in thread or by PM.

Also if someone can measure the PSU barrel adapter.  Measure in mm the length of the metalic part.  I know BFL indicates 12mm but I just want to make sure.  12mm seems a very strange length for 2.5mm/5.5mm barrel plug.  Can't seem to find a part # anywhere (Molex, digikey, half dozen suppliers, etc).  Found 8mm length and 14mm length but not 12mm length.    If someone from BFL is reading this and has part # for the barrel power socket on the BFL Single board it would help finding an exact match.

D&T,  did we ever get word whether you can get a run of these?  I would like to pitch in.

[DeathAndTaxes]

I did not.  I sent a followup email on Thursday was told I would be given a quote on Friday.  I wasn't.

That pesky thing called my real job preventing me from making another followup.  I gave them a pinout and technical drawings.  I will let everyone know when I know.

If I can't find an OEM to do it the cables could be done by hand but it will be slow tedious work.

A 3x barrel to 1 PCIe 6 pin adapter requires

1) cut 6 wires for x ft in length
2) strip both ends.
3) crimp male pin to one end of all 6 wires.
4) solder crimp pin
5) attach 6 pins to PCIE 6pin module
6) solder 3 of the wires to shell connector on barrel adapter
7) solder 3 of the wires to the center connector on barrel adapter
8 ) attach barrel cover
9) cover assembly in shrink tubing and shrink
10) test

For the couple dollars in markup no thanks. 

[rjk]

I did not.  I sent a followup email on Thursday was told I would be given a quote on Friday.  I wasn't.

That pesky thing called my real job preventing me from making another followup.  I gave them a pinout and technical drawings.  I will let everyone know when I know.

If I can't find an OEM to do it the cables could be done by hand but it will be slow tedious work.

A 3x barrel to 1 PCIe 6 pin adapter requires

1) cut 6 wires for x ft in length
2) strip both ends.
3) crimp male pin to one end of all 6 wires.
4) solder crimp pin
5) attach 6 pins to PCIE 6pin module
6) solder 3 of the wires to shell connector on barrel adapter
7) solder 3 of the wires to the center connector on barrel adapter
attach barrel cover
9) cover assembly in shrink tubing and shrink
10) test

I have a nice automatic stripper, but the crimping would piss me off rapidly. If I had one of Molex's dedicated $350 crimpers, I might give it better consideration, but then there is soldering to worry about.. Nah no thanks

[jjiimm_64]

Thxs.  I just ordered 2.  but any more and I would want to hook them to my seasonics.

[jddebug]

Although it pains me a little to do it I'm going to just cut off the PCIe connector and wire these on. They were $4 a piece and I can use crimps or whatever and will be fast and easy. I bought a 1200 watt supply PSU COOLMAX|ZPG-1200B 1200W R to run the 14 singles.



These were available at my local electronic supply house. I imagine even Radio Shack would have them.

They had cheaper ones (24 gauge wire which I felt was a bit small) and they had just barrel connectors but I don't want to waste a day trying to screw with soldering to barrel connectors. These are a simple snip, strip and crimp.

[jake262144]

Although it pains me a little to do it I'm going to just cut off the PCIe connector and wire these on. They were $4 a piece and I can use crimps or whatever and will be fast and easy. I bought a 1200 watt supply PSU COOLMAX|ZPG-1200B 1200W R to run the 14 singles.

Why not use one of these adapters instead of ruining the resale value of your PSU?

[jddebug]

Although it pains me a little to do it I'm going to just cut off the PCIe connector and wire these on. They were $4 a piece and I can use crimps or whatever and will be fast and easy. I bought a 1200 watt supply PSU COOLMAX|ZPG-1200B 1200W R to run the 14 singles.

Why not use one of these adapters instead of ruining the resale value of your PSU?

I'd have to be a bit more patient to do that (Can't find any of those locally, I tried). Thank you for pointing out where to get them. I may wait. I've not done any cutting.....yet.

[BlackPrapor]

Hey Mr BFL man,
If we don't need the included PSU, can we get a discount?

Taking into account that PSU weighs as much as the unit itself, shipping discount should be offered as well.... I'm just saying. 

[rjk]

Hey Mr BFL man,
If we don't need the included PSU, can we get a discount?

Taking into account that PSU weighs as much as the unit itself, shipping discount should be offered as well.... I'm just saying. 

Lol, I suppose it does make a bit of a difference if you expect them to ship you 50 at once

[DeathAndTaxes]

So I got a quote back.  Simply not economical for our purposes.

3x barrel to 1x PCIe 6 pin adapter (2ft in length) is $25.34 ea in qty 100.  Even qty 250 only brings that down to $19.88. 

Very disappointing since I estimate the parts to be <$8 in bulk.  Needless to say I won't be ordering them and I have no interest in doing any by hand beyond my personal use.

[Inaba]

Well shit...

So, do we have a comprehensive parts list and requirements?

[DeathAndTaxes]

I have it on my home computer I will post a parts list this evening. 

I think partially complete parts lists are floating around in various threads.

The main obstacle is the mind numbing tedium of manually crimping and soldering a couple hundred wires. 

[Inaba]

Yeah, I am not looking forward to that... it is almost tempting to just cut the ends off and do some soldering.

[DeathAndTaxes]

Yeah, I am not looking forward to that... it is almost tempting to just cut the ends off and do some soldering.

Yeah I am thinking that is the better route for hand assembly.  Doing 6 butt splices would be a lot easier than building a cable assembly by hand.

[rjk]

Yeah, I am not looking forward to that... it is almost tempting to just cut the ends off and do some soldering.

Yeah I am thinking that is the better route for hand assembly.  Doing 6 butt splices would be a lot easier than building a cable assembly by hand.

Well hey, I just found this thing:



That would cut the amount of work needed by quite a lot. You would only need to buy barrel adapters, and then there would be no PSU hacking needed. I might even do some, since gigavps offered 4BTC each how does that sound for everyone?

EDIT: This one would allow for 3 BFLs per 6-pin, and if you need some, say how many so I can figure out how much stuff to order.