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Topic: Server Power Supply Interface Board - for standalone miners and GPU rigs - page 29. (Read 120715 times)

hero member
Activity: 546
Merit: 500
Owner, Minersource.net
Ok, the FCI 51915-064LF part discussion has come to a dead-end.  Our only option is to place a large enough order to get the factory to manufacture another run.  Minimum quantities look like 200+.  Do we have that much interest?  If so, we have a couple ways to move on this.  I've got quotes for ordering these, which I've forwarded to sidehack.

Im in for at least that number, so yes.
PMB
member
Activity: 109
Merit: 10
Ok, the FCI 51915-064LF part discussion has come to a dead-end.  Our only option is to place a large enough order to get the factory to manufacture another run.  Minimum quantities look like 200+.  Do we have that much interest?  If so, we have a couple ways to move on this.  I've got quotes for ordering these, which I've forwarded to sidehack.


This will be the Connector from the PCB to the DELL PSU right? If so how much for each and Shipping to Europe?

regards,

P.
full member
Activity: 168
Merit: 100
Ok, the FCI 51915-064LF part discussion has come to a dead-end.  Our only option is to place a large enough order to get the factory to manufacture another run.  Minimum quantities look like 200+.  Do we have that much interest?  If so, we have a couple ways to move on this.  I've got quotes for ordering these, which I've forwarded to sidehack.
PMB
member
Activity: 109
Merit: 10
First "complete" prototype finished and undergoing testing; as soon as a reliable source of parts can be found I'll start on actual production. If anyone's got an "in" with Molex or FCI I wouldn't mind a bit of assistance tracking down both parts and information.

This board is designed to mate with a Dell Z750P power supply from a PowerEdge 2950; said supplies can be found fairly readily on eBay in various conditions for as low as $12. They are rated to provide 62A at 12V at 90% efficiency. This interface board provides
 - Screw terminals for +12V and GND so you only hook up what cables you need.
 - Additional output capacitance for voltage ripple and burst current buffering
 - Manual fan speed control (the stock full speed is quite loud)
 - Auto-powerup which can be triggered by an external signal as low as 3V, disablable by a toggle switch
 - Manual powerup from a toggle switch. Because toggle switches are legit.
 - In-signal and Out-signal headers which allow chaining, so one supply can turn on multiple others
 - Current share feature which should allow multiple supplies to cross-regulate and evenly distribute high power loads in parallel



Hi,

Great Project!

I'm from the EU so bringing it in from the US is going to up the price a bit. Will you be releasing the PCB design so one can build it by himself?

If so do you have a parts list?

regards,

P.
PMB
member
Activity: 109
Merit: 10
Glad to see I'm not the only one doing this.
For the molex crimp pins, I used mouser 538-39-00-0038-CT, I used 538-39-01-2060 for the 6 pin connectors but they have one square plug that didn't match my video cards but worked with the cube. The big issue is making all the connections, it's too time consuming to do by hand and the edge connector I used was $6 plus $0.27 per pin. Overall it's worth it for my own use because I already had the tools but the labor and liability keeps me from selling any.


Hi,

For 6 Pin you can use the Molex : http://www.molex.com/molex/products/datasheet.jsp?part=active/0455590002_CRIMP_HOUSINGS.xml

Which is made specially for this. For the 8 Pin I can't seem to find any. Maybe a 6 + 2 instead?

regards,

P.
sr. member
Activity: 378
Merit: 250
Hope you don't mind if I ask you any questions while designing the board for this supply.

I've got a few extra if you want one to play with. I've been meaning to come up with a good way to distribute all that power, the connector's terminals aren't exactly held in well and I'm afraid they'd be a problem at some point soldering directly to them.

Kinda why I wanted to see an up close pic to see if your connector was different, or how you dealt with what I'm seeing.

The little pins I'm only connected to the power on and ground wires. Then I gopped on some hot glue to keep the little bastards still.
The big power connectors aren't goin anywhere.

That answers my question pretty well, thanks! The little pins can do some pretty neat stuff from what I've been reading. Hot glue sounds like a good way to keep them from doing neat stuff when you don't want it to. I'm also glad it runs 12V pretty steady without any further control needed, I thought it might take at least a resistor to set the 12V..

I'd agree that the big ones bite down pretty hard, I don't think they will go anywhere either. Those terminals slide out pretty easy when they aren't connected though. I was planning on clipping all the little pins off and soldering gangs of wires down inside the terminal.

Sucks about that other power supply connector, I just searched the P/N of the socket and found the plug P/N on digi's search. I'm sure you figured that out though, guess I just got lucky picking these supplies  Grin

                        

You don't wanna see the zip ties holding the fans and power connectors to the psus Smiley
sr. member
Activity: 364
Merit: 250
Hope you don't mind if I ask you any questions while designing the board for this supply.

I've got a few extra if you want one to play with. I've been meaning to come up with a good way to distribute all that power, the connector's terminals aren't exactly held in well and I'm afraid they'd be a problem at some point soldering directly to them.

Kinda why I wanted to see an up close pic to see if your connector was different, or how you dealt with what I'm seeing.

The little pins I'm only connected to the power on and ground wires. Then I gopped on some hot glue to keep the little bastards still.
The big power connectors aren't goin anywhere.

That answers my question pretty well, thanks! The little pins can do some pretty neat stuff from what I've been reading. Hot glue sounds like a good way to keep them from doing neat stuff when you don't want it to. I'm also glad it runs 12V pretty steady without any further control needed, I thought it might take at least a resistor to set the 12V..

I'd agree that the big ones bite down pretty hard, I don't think they will go anywhere either. Those terminals slide out pretty easy when they aren't connected though. I was planning on clipping all the little pins off and soldering gangs of wires down inside the terminal.

Sucks about that other power supply connector, I just searched the P/N of the socket and found the plug P/N on digi's search. I'm sure you figured that out though, guess I just got lucky picking these supplies  Grin

                        
legendary
Activity: 3374
Merit: 1859
Curmudgeonly hardware guy
That's how I did my first test, wired straight to the supply terminals with pin header plugs and hot-snotted the whole thing solid.

The Z750P connector is not the same as on the 2000. I think, actually, that the Z750P is the only effin' supply that uses that connector; there's a bunch with the same pinout but ever-so-slightly different spacing on the power blades which is why it's hard to find mating connectors.
sr. member
Activity: 378
Merit: 250
Hope you don't mind if I ask you any questions while designing the board for this supply.

I've got a few extra if you want one to play with. I've been meaning to come up with a good way to distribute all that power, the connector's terminals aren't exactly held in well and I'm afraid they'd be a problem at some point soldering directly to them.

Kinda why I wanted to see an up close pic to see if your connector was different, or how you dealt with what I'm seeing.

The little pins I'm only connected to the power on and ground wires. Then I gopped on some hot glue to keep the little bastards still.
The big power connectors aren't goin anywhere.
sr. member
Activity: 364
Merit: 250
Hope you don't mind if I ask you any questions while designing the board for this supply.

I've got a few extra if you want one to play with. I've been meaning to come up with a good way to distribute all that power, the connector's terminals aren't exactly held in well and I'm afraid they'd be a problem at some point soldering directly to them.

Kinda why I wanted to see an up close pic to see if your connector was different, or how you dealt with what I'm seeing.
legendary
Activity: 3374
Merit: 1859
Curmudgeonly hardware guy
Hope you don't mind if I ask you any questions while designing the board for this supply.
sr. member
Activity: 378
Merit: 250
These are what I've been making for my DPS-2000BBs. Holy shit I'm tired of soldering and stripping wires. I need a cable manufacturer.

I've made almost a dozen so far. Nice part of the 2000bb is that I can run 7 r9-280x or 10 270x cards off each one. Probably more, as I think there is sufficient over capacity in the power supplies, but I'm leaving headroom.



Totally cool! I assume the pot is for setting volts on the 12V rail, Sata lines for riser cables, a few fan headers, and running the mobo off another cheap supply?

Do you think I could talk you into a close up of how you mounted all those wires? It looks like you've got them all directly to the pins, am I right?



no pot, that's a switch and a volt gauge to monitor. It's 12.3 volts rock solid. I don't need to mess with it. It's all soldered directly to the header plug  I posted earlier in the thread.
sr. member
Activity: 364
Merit: 250
These are what I've been making for my DPS-2000BBs. Holy shit I'm tired of soldering and stripping wires. I need a cable manufacturer.

I've made almost a dozen so far. Nice part of the 2000bb is that I can run 7 r9-280x or 10 270x cards off each one. Probably more, as I think there is sufficient over capacity in the power supplies, but I'm leaving headroom.



Totally cool! I assume the pot is for setting volts on the 12V rail, Sata lines for riser cables, a few fan headers, and running the mobo off another cheap supply?

Do you think I could talk you into a close up of how you mounted all those wires? It looks like you've got them all directly to the pins, am I right?

sr. member
Activity: 378
Merit: 250
These are what I've been making for my DPS-2000BBs. Holy shit I'm tired of soldering and stripping wires. I need a cable manufacturer.

I've made almost a dozen so far. Nice part of the 2000bb is that I can run 7 r9-280x or 10 270x cards off each one. Probably more, as I think there is sufficient over capacity in the power supplies, but I'm leaving headroom.

legendary
Activity: 3374
Merit: 1859
Curmudgeonly hardware guy
DPS800 is the next board we'll have available. Just gotta get some time to make one - in addition to Blade/Cube repair service and Z750P designs, I've got a "real job" and a few other side projects to juggle.


Also looking at cables; Cheshyr got some good numbers, need to find out a bit more information but we'll likely have cables available for purchase alongside the boards for around $4-$5 depending on wire diameter and length; this'll have a PCIe 6-pin and spade connectors already assembled.
sr. member
Activity: 588
Merit: 250
I grabbed an IBM DPS-2500BB A and a HP DPS-800GB A 1000W for a few pennies, so if you're working on compatible boards, count me in for one of each, in addition to 4 Z750P boards.
sr. member
Activity: 455
Merit: 250
You Don't Bitcoin 'till You Mint Coin
Finally found some information on to turn on the HP Common Slot Power Supplies:

http://www.rchelination.com/setting-hp-dps-1200fb-power-supply/

Still looking for a connector though.





member
Activity: 90
Merit: 10
Untitled
I have a Dell Z750P that is waiting for 1 of these once the bigger orders have been fulfilled.

Looking forward to seeing what the finished product looks like.

member
Activity: 117
Merit: 10
Bump for OP...the guy knows his shit.

Count me in for a couple.
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