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How damaged is it? If you're gonna toss it, I'd pay shipping (well, within the US) to play with it a bit.
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We had a Prisma here to test for a day, and ran it just fine on 2x Dell 750
We have had 5x Tubes running on 2X DPS-2000BB in hosting for two months with no issues. A prisma pulls only slightly more power (20% max) than a Tube, so 2 per DPS-2000BB is well within the PSU's capabilities.
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Our boards were designed for a 240A rating, and the first one was stress-tested to 200A for a full seven days with zero problems. It was actually a current-sense board, so the PCB had to deal with the extra heat of 200A shunts and still performed beautifully; stock boards will do even better. They should be alright for a DPS-2500BB.
The only thing about adjusting the DPS-2000BB settings is, over-current is an internal pot so you might have to take the case apart - which is actually very easy. Overcurrent protection usually kicks in just shy of 200A but can be adjusted up over 210A I think.
Output voltage adjustment is not implemented on our boards, partly for safety reasons. We didn't want someone grabbing the wrong knob and roasting all their hardware accidentally.
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Be thankful it's not actually a 50's interface (punchcards). DOS wasn't a thing until the late 70's.
I just got a Habanero up and going last week, and in the next few days need to rig up and light up a stock Hashfast board. And will probably be pulling from some of this recent data on tweaking as well. Hope everything gets working for you, SVK. Wish I could help but all I know on them so far is hardware.
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No, still a work in progress. I need to make a good manifold on the radiator so I can pipe other stuff in there too. I cleaned out some of the tubing and added a good inlet filter this morning, regreased and rebalanced the waterblock. I fired it back up on full clock (850) and one of the cores was wigging out a bit more than expected, so I figured to restart on stepped reduced clocks until it evened out. Restart on 840 and one of the dies isn't hashing at all. Running cold and the hashrate is 3/4 expected. That's gonna be fun to diagnose.
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This particular PSU was used in IBM BladeCenters. I think each 6U machine had 4 PSU in it. Not sure if they had any other purposes from the start.
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Um, sure? I can ship internationally if you can pay for it.
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We've got probably 50-odd boards coming this way for hosting customers. If it's mostly a matter of swapping micros on an already-populated board, heck send 'em on and send the parts we'll do it here at the shop. Two days they'll probably all be up and running.
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I know the N750 PSUs (N750P-S0/S1 ?) should be good to go. Yep, I've got a dozen or so boards available and cables are discounted through Sunday night. PM an order and we'll get you fixed up.
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I finally got around to lighting up the Habanero I fetched secondhand from someone back in early August, and daggum I like that thing. Figured out there was something gumming up my waterblock at one point and it was overheating; after a full flush of the lines (including blowing out a big fat dead spider) and fetching new clean water, heck that thing's running cold. It was pushing 800MHz at 880mV and 80C when I left the shop. Darn sexy piece of hardware. I know the radiator I got set up is super overkill, it's just what I had (originally spec'd for a 3kw adjustable dummy load, should probably finish that thing sometime). Eventually gonna put together a manifold for it. Got another Hashfast board I need to figure out, and when those pesky technobit minion boards ever arrive I'll probably put them in the loop.
Raystorm waterblock (I forget the model, same as QG used I think)
Arctic Silver Ceramic thermal compound
~700LPH 12VDC pump
12x25" aluminum car radiator, 5-gallon bucket resorvoir
12VDC 6.5A 12" fan on one half and 6x 12V 0.68A 120mm fans on the other
Dell 750W PSU kit
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Received my Prisma today. I had a bit of trouble with the USB adapter, I guess the most recent Windows build of cgminer doesn't have the blockerupter stuff integrated yet? But AM's specific release is working just fine. Lit up across a pair of our D750 PSUs currently.
Thanks for doing what you do, Canary.
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Just got a Prisma in. The USB adapter uses the favorite CP2102, and we checked the firmware; it spoofs the ninth data bit by switching parity modes to force a "1" or "0" as needed in an 8+1 parity mode. So an off-the-shelf adapter would probably work, if you know what pins are what signals on the machine and the signal voltage is right.
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If these are controlled the same as the Tubes - which seems likely since they run on Tube controllers as well - you would need a USB-UART adapter's RX, TX and GND lines. I think it's a 3V3 signal voltage. But the actual protocol was a nine-data-bits, I think no parity, at 460800 baud, which isn't a mode that many converters support. I'd be surprised if the one he bought would do it, based on what Novak turned up while working on RPi support before AM released their cgminer stuff.
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All orders placed between noon Tuesday and end of Sunday (10/26) can get a special discount pricing. All DPS-2000BB interface boards are $45 in any quantity; 18" cables are $2.75 and 36" cables are $3.75 apiece in any quantity.
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I've got about a dozen 80mm 4-wire fans that work well in pairs for single PSUs. The leads would have to be stretched/spliced to reach the boards properly but that's not hard.
I also have some 12-foot NEMA L6-20P power cords for these PSUs.
While supplies last, I'll toss in free fans and power cords upon request for orders over $100.
Also, we're working on a deal that might allow us to drop our 6-pin cable costs and also increase flexibility in custom lengths and configurations. That's good news for sure.
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Any kind of USB made to be wired to a motherboard header will work, as the 5V and GND are spaced right. I have a RPi running off one in our hosting facility wired up just like that. I know the bitcoin economy is shifting away from the kind of people that don't always enjoy (or know how) doing most things for themselves and plug-and-go stuff is getting a lot bigger so catering to plug-and-go kind of people will probably be more of a thing than it was.
We could probably add one, if there was enough demand. It would require adding that part to the BOM and a bit of redesign to the PCB, but if we get enough people asking about it, maybe. So far I think you're the first.
Oh yeah, and we've had several people asking lately, as though it were a difficult favor, if they could buy cables without buying a board. Anything we have for sale, we'll sell. Doesn't matter. You want cables, we can sell cables.
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No, I still haven't gotten ahold of the interested EU guy. Been too busy making stuff.
All "preorders" have been shipped as of today and we are now in standing stock. Any order paid up will be shipped immediately. We've got stock on PSUs and both lengths of cable.
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We've got about a dozen and a half boards available, which can be boards or full kits. DPS-2000BB boards are also shipping from stock.
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