RS-232 Laser Transceiver Published in Electronics Australia Oct. 1997 pp.56-61 Laser based projects used to be expensive, until the development of solid state lasers. This project is designed for the entry level laser experimenter. The circuit allows any two computers with serial (RS-232) communication capability to communicate over 200 meters using a laser beam. A low cost transmitter only circuit is also presented here for use in one way communication and other laser based projects. Introduction Projects As of July 1, 2013 ThinkQuest has been discontinued. We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Teachers - For your passion in guiding students on their quest. Partners - For your unwavering support and evangelism.
The Great Geek Manual Geek Media Round-Up: July 31, 2013 Jul 31 2013 0 Comments 271 views Comics Browse like Bond: Use any computer without leaving a trace with Tails If James Bond logs on to a computer, he doesn't want to leave a bunch of files, cookies, or his IP address out there for someone to find. It might seem extreme, but sometimes it's a good idea to take the same precautions yourself. In this post, we'll walk through how to use a USB stick or DVD to anonymize, encrypt and hide everything you do on a computer no matter where you are. When we say "browse without leaving a trace", we truly mean it. This Easy Morning Stretch Will Revitalize Your Body, And Give You A Boost Of Energy! The Sun Salutation: (Surya Namaskara) is a sequence of twelve positions performed in a continuous flow. Each position counteracts the one before, stretching the entire body, while alternately expanding and contracting the chest to regulate the breathing. These powerful yoga poses are said to have a great impact on the whole body, and mind. Sun Salutation is best done at sunrise in a space that will allow you to soak up the sun’s rays.
Common wire-to-board, wire-to-wire connectors, and crimp tools As someone who builds a lot of electrical things, one of the perhaps most unexciting yet fundamental subject areas is connectors. The range of connectors available and in-use today is trully astonishing. Big sellers like Digi-key/Farnell/Mouser literally have tens of thousands of product lines in their connectors category! With so many different types of connectors available, it’s often difficult to know what to buy, especially when you’re buying for general use or “personal stock”. On this page I’ll cover some of the most common connectors in use today, and detail crimping/tooling considerations.
How to Can, Freeze, Dry and Preserve Any Fruit or Vegetable at Home Home canning, freezing and preserving, whether it is jam, salsa, applesauce, apple butter, pickles or whatever, is easy; with these simple, fully illustrated directions with detailed tips and tricks. Save money, eat healthier, with no additives or chemicals... and with much better taste! This page provides the links to our illustrated recipes and canning* directions - so easy ANYONE can do it, along with a multitude of other recipes, guides and canning instructions. For safety, these recipes closely follow the USDA recipes, Ball Blue Book and/or those provided by major university extension services. Whenever possible, instructions also are provided to allow you to choose the options that are important to you; such as types of cooking equipment or choices in sweeteners: honey, Stevia (in a prepared form like Truvia, it measures same as sugar; if you use another form, you'll need do your own conversion) - or Splenda, if you prefer, , Stevia, fruit juice or sugar. United States
70 Things Every Computer Geek Should Know. 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. A geek is one who isn’t satisfied knowing only the surface facts, but instead has a visceral desire to learn everything possible about a particular subject. A techie geek is usually one who knows a little about everything, and is thus the person family and friends turn to whenever they have a question.
Get Detailed Information About Particular IP address Connections Using netstat Command netstat command and shell pipe feature can be used to dig out more information about particular IP address connection. You can find out total established connections, closing connection, SYN and FIN bits and much more. You can also display summary statistics for each protocol using netstat. This is useful to find out if your server is under attack or not.