OneStringMiner board:The OneStringMiner boards are designed by Intron and C-scape, two well-known Bitcoin mining board designers.
The OSM is based on Bitfury chips and each board contains 15 chips, hashing 25+ GH/s without heat sink and 30+ GH/s with heat sink.
Each board runs from a single 12V supply, using ~25W.
Given the current difficulty and the
low price for the boards, purchase them to have FUN setting up a small miner!
You will not get a ROI on your investment, unless paid in fiat and BTC exchange rate raises significantly.
I estimate a single board will produce around 0.05 BTC during the first 6 months.
The models:The DIY comes in four flavours: bare board(DIY), set without heat sink(DIY0), and with one(DIY1) or two boards per heat sink(DIY2).
The OSM DIY0,1,2 sets come with all additional items to make a nice setup (hex spacers, rings, nuts, USB cable and board interconnection cables).
All you need to add is a power supply and a host computer running cgminer(bfgminer is not supported).
The hashrate will be at least 25GH/s for the DIY0, 30GH/s for the DIY1, 60GH/s for the DIY2.
Overclocking is possible, ONLY WHEN USING A HEAT SINK, by increase the voltage.
This voids the warranty.Last boards:This is the deal: PM me an offer(including shipment) in BTC for any number of DIY/DIY0/DIY1 and/or DIY2 and your complete address and I will get back to you whether or not your offer is acceptable. Shipment will be by FedEx on the next working day.
The latest prices can be found here: https://bitcointalk.org/index.php?topic=495536.msg9715128#msg9715128How to make a bid: fill in and email the list below to sales@btcguru.eu. You'll receive a reply within 24 hours.Name:
Address:
Zipcode:
City:
Country:
Phone number:To apply for 0% VAT, specify your VAT number:
Your order reference:
#DIY:
#DIY0:
#DIY1:
#DIY2:
Your bid in BTC(including shipment):
Mandatory items are
underlined.
39GH/sCan be reached by using heat sinks and overvolting, as has been done by one of the designers here:
https://bitcointalk.org/index.php?topic=495536.msg5515427#msg5515427What's in the box:DIY set:1 OneStringMiner board
DIY0 set:1 OneStringMiner board
1 USB cable
1 power interconnect cable
1 serial interconnect cable
8 hex spacers(4 for each additional board)
4 rings and nuts(for each up to 3 boards)
1 10cm fan(for each up to 3 boards)
4 fan mounting strips(for each up to 3 boards)
DIY1 set:same as DIY0, plus:
1 small heat sink with mounting holes.
4 M3 screws to mount the board to the heat sink
DIY2 set:2 DIY0 sets, plus:
1 big heat sink with mounting holes.
8 M3 screws to mount the boards to the heat sink
Everything is in stock, including single and double heat sinks:So YES, we are selling and shipping. Mostly DIY0 sets, which come without a heat sink. We sell these sets for 25GH/s, but most are faster, some even over 30GH/s. Currently the boards are connected via USB. The serial interconnection is available, but performance is about 10% lower than direct USB connection. Up to 16 boards can run from one USB connection when utilising the serial connection.
Taxes:The buyer is responsible for all taxes that might need to be paid besides the purchase price.
All shipments will be insured for the purchase price and a signature is required when receiving the package.
Some technical details:The initial design of the board was first shown on bitcointalk here:
https://bitcointalk.org/index.php?topic=370932.0The boards are fixed to the heat sink with 4 M3 screws, which will be supplied by us.
The heat sinks have 4 M4 screw holes to easily fix the heat sinks to a base plate. If you want, you can get the screws for these 4 M4 holes for free. Just ask when ordering.
The large heat sinks also have 2 M4 screw holes on top, to stiffen a set of multiple heat sinks. And if you want screws for these 2 holes too, just ask.
The size of an OneString board is 140mm x 100mm.
Two PCIe connectors, 2 screw terminals and 1 barrel jack connector are supplied on each board for power.
Advise is to make sets of 5 DIY1 boards or 5 DIY2 sets, power the middle board(s) with PCIe and use the screw terminals to connect the two boards on the left and the right with the centre board as can be seen on the picture with three single boards. Setup this way no more than ~6A flows through the boards interconnections and no more than ~150W through the PCIe connector.
DIY0 towers can also be made by using 3cm pieces of aquarium air hose and an M3 rod of 20cm. You'll only use the supplied hex spacers on the bottom and the top of the tower. Pictures can be found in this thread.
Communication:Direct communication only please and by email; four email addresses have been setup:
info@btcguru.eu,
sales@btcguru.eu,
support@btcguru.eu and
rma@btcguru.eu. This will be the only way for us to reply to you in a timely manner. We will do our best to answer within 24 hours. If you have a tough question to answer we will let you know within 24 hours that it will take longer to answer your question.
I will do my best to reply to bitcointalk messages; still replying to email will have priority. We are located in the Netherlands and our timezone is CET, GMT+2 (Summer time).
Who am I:
In the summer of 2011 I started mining Bitcoins, with GPU’s and later with FPGA’s. Not a huge miner, but nowadays running around 2.5TH/s and that’s still growing. I am an active member on bitcointalk, helping others and now selling our first products.
The company:My company is called One day I will fly Away B.V.:
http://www.onedayi.nl. Sales and support of the mining hardware please only via email to the earlier mentioned email addresses @btcguru.eu. btcguru.eu is currently used for the manual only:
http://www.btcguru.eu/documentation/InstallationManualOneStringMiner.pdfPictures:DIY bare board:
All DIY1 items in one picture:
OSM DIY2 test setup for serial communication:
OSM Boards in box, two layers, 200 boards per box:
Questions ? Ask away... or email info@btcguru.eu
