Control real world devices with your PC Parts list: Picaxe 08M chip available from many sources including Rev Ed (UK), PH Anderson (USA) and Microzed (Australia) Protoboard, servo, microswitch, 9V battery, 4xAA batteries and holder, tag strip, 10k resistor, 22k resistor, 33uF 16V capacitor, 0.1uF capacitor, 7805L low power 5V regulator, 10k pot, wires (solid core telephone/data wire eg Cat5/6), 6V lightbulb, D9 female socket and cover, 2 metres of 3 (or 4) core data wire, battery clips The above companies also sell USB to serial devices which are useful for laptops which don't have a serial port.
How to Crack the Account Password on Any Operating System – Joe Tech This guest post was written by Blair Mathis from LaptopLogic.com – your premier source for the latest laptop software news and best laptop accessories. Computer passwords are like locks on doors – they keep honest people honest. If someone wishes to gain access to your laptop or computer, a simple login password will not stop them. Are you curious how easy it is for someone to gain access to your computer? Windows Windows is still the most popular operating system, and the method used to discover the login password is the easiest. Simply download the Ophcrack ISO and burn it to a CD (or load it onto a USB drive via UNetbootin). The computer will restart and Ophcrack will be loaded. Mac The second most popular operating system, OS X is no safer when it comes to password cracking then Windows. The easiest method would be to use Ophcrack on this, also, as it works with Mac and Linux in addition to Windows. If the Mac runs OS X 10.4, then you only need the installation CD. fsck -fy dscl .
Mecanum Wheels - AndyMark Product Overview: Mecanum wheels allow a robot to achieve omni-directional movement while supporting large weights. AndyMark mecanum wheels feature our patented designs. The rollers of our mecanum wheels are supported on both sides and not cantilevered. Bengt Ilon invented this wheel concept while working for the Swedish company Mecanum AB in the early 1990's. Specification sheet for AndyMark Mecanum wheels Bengt Ilon invented this wheel concept while working for the Swedish company Mecanum AB in the early 1990's. The 4” Mecanum wheels utilize 12 rollers positioned between 2 50/50 ABS & PC plastic hub halves. Common specs among 6" 8" and 10" Mecanum wheels: Driving a Wheel:There are two easy ways to drive a wheel. Replacement and extra parts: Below are replacement and extra parts that make up our mecanum wheels.
Free electronics projects and circuit diagrams (schematics) for hobbyists. Build your own electronic gadgets How to Surf the Web Anonymously" The Internet has a way of lulling you into a false sense of anonymity. After all, how can anyone know your true identity in a virtual world? The truth is that simply by connecting to the Internet, you share information about your computer, your geographical location and even about the Web sites you visit. The goal of anonymous Web surfing is to circumvent the technologies that track your online activity and may potentially expose your personal information to others. By surfing anonymously, no one knows who you are, where you're connecting from or what sites you are visiting. When people think of surfing the Web anonymously, they automatically associate it with extramarital affairs, malicious hacking, illegal downloading and other sordid behaviors. As you'll see in the next section, surfing the Web anonymously isn't as easy as erasing your browser history.
How to build electronic devices on your own Building electrical devices is probably the most inexpensive engineering you can do because most electronic components are very cheap, like less than $1. How to actually build devices on your own isn't taught enough in engineering courses, so here's a quick summary of how to get started making devices like I have on my site. In this page, I kind of assume you're an engineer/scientist of some sort (or studying to be one) and that you've already had a few electrical engineering classes. If you don't know any electrical engineering, you'll obviously need to learn the basics before you can start inventing. A good place to start is the book Make: Electronics , which teaches you theory and practical knowledge of components at the same time. First, get an idea To get an idea for something cool to make, it helps to go to online stores for electronic components (Jameco.com is a good one) and look at the components they have. Also, I really recommend getting a microcontroller, like the Arduino. . .
university lectures computer science Whether your goal is to earn a promotion, graduate at the top of your class, or just accelerate your life, lectures can help get you there. Our archives of lectures cover a huge range of topics and have all been handpicked and carefully designed by experienced instructors throughout the world who are dedicated to helping you take the next step toward meeting your career goals. Lifelong learns can turn their free time turn into self-improvement time. The online lectures on this list are more than lecture notes or a slideshow on a topic -- they were designed for audiences like you, with carefully sequenced themes and topics taught by veteran educators, and often with additional resources for your own independent study. Lecture courses are a valid and vital learning tool, and may be one of the best methods of learning available.
Electronics - Electronic Components Distributor Featured Product The Jameco Difference Jameco has been in business for over 35 years and carries over 50,000 semiconductors, passives, interconnects, electromechanical, power supplies, LEDs and other popular electronic components. Learn More About Jameco » At Your Service Talk to a live agent ortechnical assistant. Will Call Hours Monday-Friday 8AM TO 5PM PSTClosed Holidays 1355 Shoreway Road, Belmont, CA 94002Click here for directions Copyright ©2002 - 2014 Jameco. Safe Hex - safe computing tips to defend against viruses, worms, trojans, and other malware. Please note that this document is quite dated (last updated in 2008). Some of the infomation is still of interest so I'm keeping the document up for posterity only. Some of the old links have been removed. Safe Hex - A collection of suggestions intended to help you defend against viruses, worms, trojans (oh my!) You can use the Windows Update and Office Update sites to keep your system up-to-date. 3. Note that security holes may be discovered in these programs as well (though probably less frequently), so it's a good idea to check for updates regularly. You'll be able to import your IE Favorites to most of these browser alternatives. 4. Never open email attachments from someone you don't know Never open email attachments forwarded to you even if they're from someone you know Never open unsolicited or unexpected e-mail attachments until you've confirmed the sender actually meant to send them. 5. Warning - Microsoft RTF Security Bulletin - May 22, 2001 6. Administrator Tip Before you go...