Here is a board I built for my DPS-800GB, It hooks up to a Raspberry Pi so I can monitor the supply's status and power cycle it remotely...
I like your setup. Could you please tell more about your board and PRi software you use to control PSU? Sure; The board, made to work with the HP DPS-800GBA, is my own design it's got logic to switch the supply on and off and convert the signal levels coming out of the supply into voltages the Rpi can handle w/o blowing up. If you don't want to bother with a Pi you can also just use a jumper to turn it on and off manually. The 12 position screw terminal is rated to supply up to 15 Amps on each position so you can push the supply to it max w/o worrying about starting a fire. The supply itself can handle 2 - 2.5 AntMiner S1's. The board interfaces with the Rpi via GPIO. There are 4 wires one to turn the supply on and off, one to tell the Pi the supply is plugged into a wall socket and receiving power, one to tell the Pi the 12 Volt power is on and working and the 4th is a ground wire. I have a couple shell scripts that are a few lines each that configure the GPIO setting on the Pi and then you can ssh into and check the status and switch the power on / off by the running the corresponding on off command. Each Pi has enough GPIO pins to control and monitor multiple supplies. My plan is to make an add-on for MinePeon were you can control the supply right from the web interface. I'm working on that now. Here are some photos of my latest revision, If anyone is interested, I'm building a bunch of these I haven't settled on an exact price yet but I'm thinking $40 each including shipping. I'll post a separate thread soon with more details but anyone interested in a board for the DPS-800 or a remotely controlable PSU keep an eye out for more info to come. Edit: There is a separate thread for more info on these now https://bitcointalk.org/index.php?topic=622783.0 or check out my website http://gigampz.comhttp://imgur.com/a/FmUl6
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This is PSA video I did this weekend concerning the BFL Bitforce SC Singles. We are recommending you replace the OEM power supply as soon as possible due to being a potential fire concern.
What voltage do these thing run on and what kind of plug do you need? They run on the standard 110-120volts, and it comes with a special 3-prong cords that plugs into a normal residential wall socket. Duh. I mean what comes out the other side of that power supply and what kind of wattage requirements does it have? Is it 12 volts like most of the other BYO PSU ASICs?
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Yeah this sucks, I hate eBay selling so much. Right now buyers want everything and are totally in control, f'ng Bitcoin is in the toilet and demand has dried up for equipment. Just last week someone offered me 150+ and I should have just took it. I've got a local guy that might be interested in making a bid on this one. Just sucks that I cannot pull the auction now, have a bad feeling this one isn't even gonna break $100.
Have someone you know buy it and then just dont make them pay? In order to void the auction that is... Or you can just cancel the auction. If you want to get the best price and aren't desperate to sell it right now the best time to sell ASIC equipment on eBay is during price bubbles people pay irrational prices during those times.
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This is PSA video I did this weekend concerning the BFL Bitforce SC Singles. We are recommending you replace the OEM power supply as soon as possible due to being a potential fire concern.
What voltage do these thing run on and what kind of plug do you need?
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Where did this come from? They were selling them at a steep discount to the list price yesterday for the first 50 buyers there was a posting on the reddit/bitcoinmining. Funny thing is, the product page selling these lists the warranty as DOA/0 days. Makes you wonder if they are just pawning off a bunch of unreliable boards to suckers.
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I sold a bunch of Block Erupters on ebay for decent prices a few weeks back I've found that using the "But it Now" fix price format with the "Make me an Offer" option works best for getting the highest price. I also offer free shipping with the option to upgrade to a faster shipping if the buyer wants it and make sure to have multiple good photos so people can see what they are bidding on. Your shipping is over priced by like 30% your pictures are not great and you lead with the "no refunds or exchanges" bit. I would say something more along the lines of guaranteed not DOA would make buyers more comfortable.
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So i just received an email to "Chris Bishop Has Sent You HashFast Refund Form for Order#*****" but i never asked for a refund. hmmm.
Yeah, that is some kind of phishing email or something making the rounds since all of your email addresses were leaked to the world. Just delete it; the Order# probably doesn't even match your actual order number the one I got didn't. Funny part is the order number does match. That's interesting. Whatever you do be careful if it actually is from HF it probably contains a bunch of additional terms and conditions they are trying to get you to agree to.
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So i just received an email to "Chris Bishop Has Sent You HashFast Refund Form for Order#*****" but i never asked for a refund. hmmm.
Yeah, that is some kind of phishing email or something making the rounds since all of your email addresses were leaked to the world. Just delete it; the Order# probably doesn't even match your actual order number the one I got didn't.
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Are electricity rates higher for a in a residential area or for a medium size business-- this would be in southern California? Southern California edison--- currently paying .30 per kw at home
Wow, those rates are horrible. I think my electric company on the east coast charges like 10 cent per kwh.
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Looks like I'm screwed, I called the retailer and told him I want to swap the PSU for something else as this one isn't "enough", obviously the answer I got wasn't satisfying, so guys. Suggest me how to make it work, I have no devices to plug in the 5v line, and the ones that I did were not enough.
You can use a resistor, I've had luck with a 56 Ohm 1/2 Watt resistor between 5v and ground on the 24pin connector. Your supply might need something that draws more power if your really do need to draw 1 Amp. There was a helpful thread on reddit a few days back about this same exact problem. Make sure the wattage rating on the resistor is high enough or you will start a fire... http://www.reddit.com/r/BitcoinMining/comments/216epw/need_help_with_antminer_s1/cgasnca
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If you shop around you will want a single rail IMHO. After messing with a TON of options, I nailed it down to CX750s. One can power two overclocked antminer S1s
No way. I have 2 overclocked @375 ants on a 850w corsair tx850 pulling 824 watts with a extra 120mm fan on each The wattage rating of a PSU is typically the _output_ power when you are measuring using a kill-a-watt you are measuring the input power. A typical supply like the CX750 is 80% efficient so at full load you would expect a kill-a-watt to read 750 / 0.80 = 937.5 Watts the CX750 is definatly right on the edge when fully loaded but still slightly under its rated capacity. That said I sold all my ATX supplies and replaced them all with server supplies like the HP DPS-800GBA, like half the price or less for 100 Watts more power and equal efficiency.
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2) you buy a miner in about 5-6 weeks you have the same BTC and the ability to make more BTC if the price goes up or the difficulity goes down. Thats why these farms are rigging powerful mining units. Equiptment will be paid for and it will cost hardly anything to let it sit. However when the BTC price shoots up they can crank out milions of $$. Run your calculator at 2000 or 5000 BTC and see what you get.
Most of these miners will not ROI in "5-6 weeks" if it doesn't produce more BTC than you could simply buy on the market for the same fiat cost then when BTC price shoots up you will end up making less $$ and have to put in work to do it.
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This might be a bit of a silly question but, this TRO against hashfast, will it stop orders from being dispatched?
No, it shouldn't. You can go read it yourself, but my understanding of it is it only covers an amount of BTC and USD that would be needed to refund the orders of that particular customer. It doesn't freeze all of their assets or anything like that.
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Amazing. I wonder if it can be done with HP power supply part#403781-001 & 379124-001 - They are 1000watt supplies and very good quality too. I have like 6 of them lying around with no use for them. It will be much better if you had the connectors for those PSUs. Do you have them? It is a board with cables that connects with those psus'. Otherwise, you can use pci brackets from old motherboards. I made some breakout boards for this supply (DPS-800GB A) If anyone is interested I've got extra parts and can build more. PM me if you are interested. Photos below, the ones I've made so far have turned out really nice. The header on it allows you to also attach it to a Raspberry Pi and monitor and switch it on/off remotely. The other advantage is you don't have to mod the supply at all so it is still in re-sell-able condition.
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Recently I try to sell my brand name JingTian miner in USA.
Then I found out that maybe a better solution to have a manufacturing place in here (since I myself lives in SF Bay area).
I am looking for
-- making my own PCB board -- SMT -- Assembly my own system
Probably with cheap price for both land and electricity, to build my own mining facility here.
Anyone?
If your board is all SMT components have you looked at http://www.smallbatchassembly.com/ it looks like they have really good prices on assembly of small batches.
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Here are my Ants powered by a HP DPS-800GB server supply w/ custom breakout board wired to a Raspberry Pi running MinePeon so I can monitor the status and power cycle remotely. http://imgur.com/a/kqFsz#0Edit: does anyone know why the embedded image isn't working right? Whoa, I didnt know you can hookup AntS1's to a Pi... Do you know of any tutorial for doing this? The Pi just controls the power supply so if something goes wrong and I need to turn the power on and off I can do it remotely. The ants are super reliable but my last miner was a POS that would without fail break when I was away and need a power cycle. That said the Ant's have an API I think it would be cool to be able to control multiple Ant's through a single MinePeon via their API. I was also thinking of building some software to check the difficulty and BTC price and turn the Ant's on and off or adjust the clock rate automatically depending what was profitable under current conditions.
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Has anyone actually received any refunds for any batch higher than Batch 1?
The letter NinjaRobot received from Hashfast via the CA consumer protection people stated that they had "refunded" amounts totaling $30,000 USD. That is like 5 orders tops. They have hundreds of customers.
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