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atcollab The microhydro plant My little paradise has a stream that provides enough water flow and head to run a small turbine, to provide electricity to my home. While writing this, the microhydro plant is being implemented, and here are some photos of the process. Since I usually like to start at the end, the first thing I built is the controller: It is an implementation of Jan Portegijs' "Humming Bird", with some changes and adaptations. The largest cost of the plant, by far, is in the piping for the rather long penstock. A smaller number of pipes were stored closer to the turbine site. Only for the last part of the run, where the pressure exceeds 2 bar, I will use blue class 4 PVC pipe. To change from the low slope run of the white pipe to the much steeper run of the blue one, a change of direction is required. My neighbor Gabriel and his son took the hard work of digging the channel. The open channel has a rounded cross section and runs with a very small slope. The flat area is where the forebay will be built.

Hobo Stove | Practical Survivor Urban survival is a tricky subject to discuss. There are advantages to urban survival. Anywhere you look there are items in trash cans and dumpsters that can be used to improve a survival situation. Cardboard boxes can be used for shelter, newspapers can be used for insulation and to the practical survivor another persons trash can be a treasure. In this case we will use a coffee can to build a stove. Keep an open mind during any survival situation. Whether backpacking, camping, or surviving, having a way to cook can make a huge difference. A coffee can or large vegetable/ravioli can will allow you to build a stove and cook. Items used to build this stove: * Coffee can * Can opener * Tin snips * Drill and drill bits * Metal coat hanger There are many methods that could be used to build this stove. We use a metal coat hanger to build rods which will help hold up the cooking pot. The top side of a coffee can is already opened. We then used the tin snips to cut a small door. Materials:

Invent Your Own Computer Games with Python Chapter 1 Read online: Chapter 1 - Installing Python Videos: Chapter 2 Read online: Chapter 2 - The Interactive Shell Chapter 3 Read online: Chapter 3 - Strings Download source: Copy source to clipboard: Use the online diff tool to find typos in your code: Chapter 4 Read online: Chapter 4 - Guess the Number Download source: Use the online diff tool to find typos in your code: Chapter 5 Read online: Chapter 5 - Jokes Download source: Use the online diff tool to find typos in your code: Chapter 6 Read online: Chapter 6 - Dragon Realm Download source: Use the online diff tool to find typos in your code: Chapter 7 Read online: Chapter 7 - Using the Debugger Chapter 8 Read online: Chapter 8 - Flow Charts Chapter 9 Read online: Chapter 9 - Hangman Download source: Use the online diff tool to find typos in your code: Chapter 10 Read online: Chapter 10 - Tic Tac Toe Download source: Chapter 11 Download source:

Top 10 Password Crackers SecTools.Org: Top 125 Network Security Tools For more than a decade, the Nmap Project has been cataloguing the network security community's favorite tools. In 2011 this site became much more dynamic, offering ratings, reviews, searching, sorting, and a new tool suggestion form . This site allows open source and commercial tools on any platform, except those tools that we maintain (such as the Nmap Security Scanner , Ncat network connector , and Nping packet manipulator ). We're very impressed by the collective smarts of the security community and we highly recommend reading the whole list and investigating any tools you are unfamiliar with. 12 tools Aircrack is a suite of tools for 802.11a/b/g WEP and WPA cracking. version 1.1 on April 24, 2010 (2 years, 5 months ago). crackers wireless UNIX users often smugly assert that the best free security tools support their platform first, and Windows ports are often an afterthought. version 4.9.43 on Dec. 3, 2011 (10 months ago). sniffers fuzzers

Chess Tactics Explained in English: Ward Farnsworth's Predator at the Chessboard & Overclock Your Reading Speed This is a guest post from Kim Roach of The Optimized Life. In today’s Information Age, reading is now a prerequisite for success in life. In fact, many presidents, including Kennedy, have required their staff to take speed reading lessons. Brian Tracy, a best-selling author, points out that just 1 hour per day of reading will make you an international expert in your chosen field within 7 years. If you’re looking to increase your learning rate while decreasing your effort, speed reading is a method you should consider studying. The Brain’s Power Speed reading actually began as part of military training to identify enemy war planes. But what was interesting about this method of military training is that it began to unveil the idea that the brain could process more things visually than was previously thought. What many people don’t realize is that the mind becomes bored when it’s not constantly stimulated. 1. In fact, I would suggest skipping parts of a book that you don’t need. 2. 3. 4. 5.

The 26 Best Self-Improvement Posts Ever Need a place to find the best self-improvement blog posts ever? One big list of inspiring geniuses? Well, here it is… my list of the best self-improvement posts ever: 1. – How to be Creative – Originally published in 2004 by Hugh Macleod at the Gaping Void. If you haven’t read it, you’re missing some of the best advice ever given freely over the internet. If you have read it, read it again… 2. – How to Make Money From Your Blog – If I had a dollar for every person who started blogging after reading this post… well… I could quit my job. 3. – Zen To Done (ZTD): The Ultimate Simple Productivity System – This is a post you can put to use to improve you life immediately. 4. – How to Learn (But Not Master) Any Language in 1 Hour (Plus: A Favor) – Tim Ferris describes in detail how you can learn the basics of new language quickly through a method he calls deconstruction. 7. – Do You Have Weirdo Syndrome? 9. – 279 Days to Overnight Success – This isn’t a blog post.

A Quick, Painless Tutorial on the Python Language Norman Matloff University of California, Davis June 17, 2008 ©2003-2008, N. Matloff Contents What Are Scripting Languages? Languages like C and C++ allow a programmer to write code at a very detailed level which has good execution speed (especially in the case of C). The term scripting language has never been formally defined, but here are the typical characteristics: Used often for system administration, Web programming, text processing, etc. Why Python? The first really popular scripting language was Perl. Advocates of Python, often called pythonistas, say that Python is so clear and so enjoyable to write in that one should use Python for all of one's programming work, not just for scripting work. Background Needed Anyone with even a bit of programming experience should find the material through Section 8 to be quite accessible. The material beginning with Section 10 will feel quite comfortable to anyone with background in an object-oriented programming (OOP) language such as C++ or Java.

70 Things Every Computer Geek Should Know. | Arrow Webzine The term ‘geek’, once used to label a circus freak, has morphed in meaning over the years. What was once an unusual profession transferred into a word indicating social awkwardness. As time has gone on, the word has yet again morphed to indicate a new type of individual: someone who is obsessive over one (or more) particular subjects, whether it be science, photography, electronics, computers, media, or any other field. How to become a real computer Geek? Little known to most, there are many benefits to being a computer geek. You may get the answer here: The Meaning of Technical Acronyms USB – Universal Serial BusGPU – Graphics Processing UnitCPU – Central Processing UnitATA- AT Attachment (AT Attachment Packet Interface (ATAPI)SATA – Serial ATAHTML – Hyper-text Markup LanguageHTTP – Hypertext Transfer ProtocolFTP – File Transfer ProtocolP2P - peer to peer 1. One of the best list of default passwords. 1A. 2. 3. 4.