The flood gates on Bitcoins ASIC miners is definitely open with more Bitfury-based devices hitting the streets.My last post on Bitfury based USB sticks covered the Bi•Fury ASIC miner.Bi•Fury packs dual 55nm Bitfury ASIC chips, a striking red design, and hashes at around 5 Gh/s.The Twinfury USB miner, currently available from Minecoin.net, is another new USB ASIC based based on a dual 55nm Bitfury design.Right away you will notice these devices have much larger heat-sinks than the Bi•Fury ASICs requiring 3x the clearance.However, this comes with noticeable benefits as the Twinfury hashes at half the temperature Bi•Fury: about 16C versus 38C in my tests.In addition the Twinfury USB stick includes a button for resetting the device without having to unplug it, a handy addition inherited from the Blue & Red Fury ASIC predecessors.Now that we have a rundown on the features, let’s see what what we can do to get it hashing under OS X!As with the HashBuster Micro before it, the Twinfury is currently only supported by bfgminer.

So, the first step is to install bfgminer on OS X. There is a thread here on the Bitcoin Talk forums which discusses various ways to install bfgminer on Mac OS X.The most full-proof method is to use Homebrew: Note: It is important that you use the --HEAD argument (two dashes prefix) until bfgminer 3.9.1 is released.This will install the miner using the latest source from Github which includes some fixes for Twinfury on OS X. Like the HashBuster Micro (and in contrast to the Bi•Fury) the Twinfury USB ASIC requires no installed kernel extension or driver.After bfgminer is installed you can use the -d?argument to list available devices with bfgminer: bfgminer -S twinfury:all -d?[2013-12-28 00:58:45] Started bfgminer 3.9.0 [2013-12-28 00:58:48] Devices detected: [2013-12-28 00:58:48] Device (driver=twinfury; procs=2; path=/dev/cu.usbmodem3a21) 1 devices listed Once the Twinfury stick is detected you can start bfgminer using the -o, -u and -p arguments to begin mining: bfgminer -S twinfury:all -o hostname -u username -p password The red-and-green color scheme above is thanks to a small Christmas-themed update released by the bfgminer author just prior to the holidays.

I’ve done similar things in my own software in the past and think it’s a nice touch.jpm chase bitcoinIf you have any questions feel free to post them in the comments below or on this thread at the Bitcoin Talk forums.litecoin via paypalShare See more product details GekkoScience Compac USB Stick Bitcoin Miner 8gh/s+ (BM1384) What other items do customers buy after viewing this item?buy litecoin hong kongRev 2 GekkoScience 2-Pac Compac USB Stick Bitcoin Miner 15gh/s+ (BM1384x2) 8 2,784 Sabrent 13 Port High Speed USB 2.0 Hub with Power Adapter And 2 Control Switches (HB-U14P) 824 GekkoScience Asic Rev.2 Double chip 2-Pac Compac-2 USB Stick Bitcoin Miner 15gh/s+ (BM1384x2) Product description The most efficient USB miner ever manufactured is available in limited quantities!litecoin rise 2017

The Compac features 2 Bitmain BM1384 chips (same chip in S5) and a fully adjustable regulator design that gives you a core voltage range of 550mV to 800mV.bitcoin extension wikiTypical hasrate is 15+gh/s depending on clock rate.bitcoin mining setup youtubeEfficiency is .31-.35 watts per gh.Product information Technical Details Brand Name GEKKOSCIENCE Series Compac Hardware Platform Mac, Windows, Linux, Raspberry Pi Operating System Windows, OSX, Linux Item Weight 2.2 ounces Product Dimensions 5 x 1 x 0.6 inches Item Dimensions L x W x H 5 x 1 x 0.55 inches Color Green Power Source USB Voltage 5 volts Additional Information ASIN B016CWBYJK Customer Reviews 4.1 out of 5 stars Best Sellers Rank #4,368 in Computers & Accessories (See top 100) #647 in Computers & Accessories > Tablets Shipping Weight 2.2 ounces Date First Available October 9, 2015 Warranty & Support :: Product Warranty: For warranty information about this product, please click here Feedback If you are a seller for this product, would you like to suggest updates through seller support?

See questions and answers 5 star70%4 star8%3 star3%2 star8%1 star11%See all verified purchase reviewsTop Customer ReviewsGreat little sticks to mine with, but there's a small learning curve to using them.Let me help a bit.Second most energy efficient miner in the world!I got it to work, pretty nifty.Most Efficient USB Miner AvailableAwesome miner!!This seems to be the best USB miner on the market right nowworks great after I figured out it did not like my ...Fun for messing around with.Customer Images See all customer images Most Recent Customer ReviewsSearch Customer Reviews See and discover other items: adjustable voltage regulator, raspberry pi clockAdd lots more USB capability to your Raspberry Pi or computer using this powered USB 2.0 hub.It adds a full seven powered ports, all at USB 2.0 speeds so you can use video cameras and other high speed devices (cheaper hubs are v1.1 and not as fast!)The extra sauce with this hub is that you can power it with an external 5V adapter.

There's a 2 Amp adapter included, which should be plenty to run even power-hungry cameras, WiFi adapters, and flash disks.The hub is fused for two amps using a resettable PTC fuse.Unlike cheaper hubs, this one has a single chip that provides all 7 ports instead of having two 4 port hubs chained inside.This is a great companion to your Pi, as they only have one or two USB ports and limited powering capability - we've tested it with great success on the Pi as well as our Mac and Windows desktop machines Comes with a 7-port hub, a USB extender cable, 5V 2A UL listed power adapter that can be used with 100-240VAC wall power.The 21 Bitcoin Computer is the first computer with native hardware and software support for the Bitcoin Protocol.It allows you to: Buy digital goods and services with a stream of bitcoin mined by a 21 Bitcoin Chip Sell your digital goods and services for bitcoin with the built-in 21 Micropayments Server Easily build bitcoin-payable apps, services, and devices Operate it as a standalone computer, or connect it to any Mac, Windows, or Linux machine Mine small amounts of bitcoin to facilitate development of Bitcoin applications and to purchase digital goods.

See "What is the 21 Bitcoin Computer" below for more details It includes: A command line interface and Python 3 library A 128 GB SD card loaded with a full copy of the Blockchain A suite of pre-configured Bitcoin-dependent software All the items you need to get started - including a WiFi adapter, USB-to-laptop cable, and power supply The 21 Bitcoin Computer was produced with funding from Qualcomm, Cisco, and Andreessen Horowitz.Mine Bitcoin on demand with the 21 Bitcoin Computer.Then buy and sell digital goods and services at the command line.The 21 Bitcoin Computer is the first computer with native hardware and software support for the Bitcoin protocol.That means the hardware to mine a stream of small amounts of bitcoin for development purposes, and the software to make that bitcoin useful for buying and selling digital goods.Developers use the 21 Bitcoin Computer to quickly add Bitcoin-based monetization to any app, service, or device.Please note: the satoshis you mine provide a source of readily-available bitcoin for application development, but are not intended to be used for investment purposes.

You can use the 21 Bitcoin Computer with your keyboard and monitor as a standalone Linux box, or plug it in to provide bitcoin over the Internet to any existing Mac, Windows, or Linux machine.Either way, the embedded 21 Bitcoin Chip gives you a stream of mined bitcoin to use at the command line and in your code.Now you can programmatically interact with the Bitcoin network as easily as you can connect to the Internet.The 21 Bitcoin Computer is ideal for buying and selling digital goods and services.You can use it to create bitcoin-payable APIs, set up your own personal digital goods store, pay people to share your content online, or host online games of skill.For example, you can provide translation services for bitcoin, sell your photos online, pay people to share links to your product on social media, or host a game of skill in which your friends win real money.In terms of physical goods, you can also use the 21 Bitcoin Computer to rent out any Internet-accessible device on a per-use basis.

So you can allow people to submit paid print jobs to printers and 3D printers for bitcoin.Or you can set up a smart lock that accepts bitcoin to open a door.Because the 21 Bitcoin Computer is a full computer, you can make essentially any Internet-accessible device Bitcoin-rentable.The micropayments server built in to each 21 Bitcoin Computer allows true peer-to-peer commerce.Any buyer can now directly connect with any seller anywhere in the world.As such it’s a tool for both learning Bitcoin, and for becoming an entrepreneur by selling access to your digital goods and services for Bitcoin.If you can code it, you can sell it.Describe your product in 3 words.First Bitcoin Computer Where did you get the inspiration for your product?We're all about the individual entrepreneur.The Internet meant that everyone became a publisher, even if their full time job title wasn't "reporter".Bitcoin will similarly mean that everyone becomes an entrepreneur, even if they don't quit their day job.The 21 Bitcoin Computer is our contribution to this transformation.