I can't believe how loud these are. I have an extra PS, it looks like the top panel can be removed almost in one piece. I have a buddy that can laser cut sheet metal. I might have him cut out two openings so I can put two 140mm fans on top. I just dont know if the logic board will throw a fault because it doesn't detect the original fans to be on.
Here are some pics of how we made the harness. My buddy owns a cable manufacturing company and even using $120,000 of equipment, the time and effort was not worth it. I only made these because of the delivery time to get J4bberwock boards for the first 52 Antminer S5's. I highly recommend not even consider doing harnesses and just buy the boards.
The equipment we used to do this project was an auto feed wire cutting and stripping machine that did all the 10 gauge black and reds. Then we used an automatic stripping machine to get .6" on the pre-made PCIE wires we got from klondike_bar. An ultrasonic welder was use to join the wires. Had to use a 150 watt soldering iron to join the welded pads to the power supply.
There is also a shot of the power meter when the room was hot and the fans were at max, it was drawing 3785 watts.
3785 watts? 2880 with 94%n is 3053watts how is it more?
I have no idea, going to test a few and see if they draw differently. I do believe the power supply will work with out the fans. But if not cooled it will self distruct.
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Re: Reservation for the Bladecenter H 2880W Breakout Boards
by
Soab
on 19/01/2015, 00:09:04 UTC
Here are some pics of how we made the harness. My buddy owns a cable manufacturing company and even using $120,000 of equipment, the time and effort was not worth it. I only made these because of the delivery time to get J4bberwock boards for the first 52 Antminer S5's. I highly recommend not even consider doing harnesses and just buy the boards.
The equipment we used to do this project was an auto feed wire cutting and stripping machine that did all the 10 gauge black and reds. Then we used an automatic stripping machine to get .6" on the pre-made PCIE wires we got from klondike_bar. An ultrasonic welder was use to join the wires. Had to use a 150 watt soldering iron to join the welded pads to the power supply.
There is also a shot of the power meter when the room was hot and the fans were at max, it was drawing 3785 watts.
Re: Reservation for the Bladecenter H 2880W Breakout Boards
by
Soab
on 13/01/2015, 03:13:13 UTC
I have a test unit set up with 5 Antminer S5's , The Bladecenter appears to be handling it OK. but I think this has got to be close to the max for it. I am wondering if it would be safer to just run 4 per Bladecenter. Can't complain about how loud the S5's are since you can not hear them over the Bladecenter's fans.
drawing 3180 watts at the wall 13 Degrees C air temp increase from input to output .998 power factor
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Re: Reservation for the Bladecenter H 2880W Breakout Boards
First batch of 200 boards is closed. There will be a few extra boards in stock after the batch will be shipped. I'll also try to ship up to 20 boards during the last 2 weeks of january with modded main connectors while waiting for the correct reference.
The first boards with 22 PCI-E plugs will be in my hands by the middle of next week to check them before bulk ordering.
Deposit will be collected during next week.
Any luck on a US distributor yet? Please verify that I'm on the list for the 22 PCIE boards for at least 1, but if you have enough I'll take 3. I'm picking up on of these PSU's now. Thanks so much for developing this. I've been scouring rcgroups.com on how to do this myself. I saw your recent post there as well. It seems they have a lot of info on this type of work but not much on how to do it yourself for the BladeCenter H or any supply that will handle this type of load. Do you plan or would you consider sharing tips or how to's for the do-it-yourself electronics tinkerer in the future?
Thanks again!!
There will be a US distributor for the boards. In fact I'll ship him a big batch in the first days I'll have them ready so he can dispatch the boards for small orders locally.
And everything is ordered to make at least 250 boards for the first batch, so there will be a few left.
The DIY isnt that hard, the pinout to start the PSU is available on rcgroup. (A5 to ground to start, and B2 to 12v to start the fans) Finding the good connector reference is sometimes harder, but the easy way to do it is to buy the power backplane that goes behind the PSU in the server.
I'm not an expert for the PSUs, but xandrios posted a great "how to" on rcgroup for dealing with unknown PSU
I am not sure how the control pins are labeled but I found a diagram that showed looking from the rear , the upper left pin to ground turned on the supply and right most pin on the second row to turn on the fans, This seams to be working but am I doing it the wrong way ?
This would be a question for J4bberwock.
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Re: Reservation for the Bladecenter H 2880W Breakout Boards
by
Soab
on 10/01/2015, 05:50:58 UTC
I have Jerry rigged one supply to play with it until J4bberwock's boards are ready. Works find but the fans are loud. Can not even here the S5 beside it.
Does any one know what the other control pins do. I was able to find a diagram that showed only how to power on the unit the fans and how to increase voltage by .5, would be nice to under stand all the controls.
Sent you a PM a before but i will take 15 for now.
Doug
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Re: Reservation for the Bladecenter H 2880W Breakout Boards
by
Soab
on 05/01/2015, 23:01:34 UTC
Hey smracer,
Could you do me a favor and give me measurements of the IBM Blade center please.
Thanks
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Re: [WTS] Custom server PSU breakout boards. DPS-2000 BB, HP 1200 and 1300w. 2880w
by
Soab
on 31/12/2014, 03:40:58 UTC
Hi J4bberwock, What is the part number of the connector, I can check with my contacts to see if I can get any. I also would like to buy several of these but really would like them before the end of January.
