In the past year or so cellphone jamming has become an increasingly more popular subject. Everyone has been plagued by obnoxious cellphone users in malls, buses, school, work, movie theaters, and in spite of being highly illegal, cellphone jammers are popping up in more and more places. Green Bay Professional Packet Radio has a great writeup on how it works and even a how-to for building your own
Robotics is an ever expanding career field and also now and ever expanding hobby. Numerous organizations have been put into place for the facilitation of robotic education and study. One such program called “Botball” is popular among students that range from junior high to high school. Their programs help develop and make the fascination that people seem to have naturally with robots, grow. It is something to look into if
Greener Business has put together a $15 Portable Solar Powered USB Charger with an LED Flashlight project that might appeal to the green person within you. “With this project the thing that makes it really useful is that you can leave the device in the sun, without anything hooked upped to it, then bring it anywhere with you to charge your USB devices, because it’s hooked up to the
What is an oscilloscope, what can you do with it, and how does it work? For those Hacked Gadget makers who have had little experience in working with oscilloscopes and would like to learn more about them, check out these tutorial sites. Oscilloscope tutorial Oscilloscopes Use of the Oscilloscope Using an Oscilloscope Oscilloscope Tutorials
Here is a project that you can build to show you some instant stats on almost anything you may want, emails, number of Diggs an article has, CPU usage of your computer, etc. There is a great build log for the project and the creator has released the entire project so you can build your own. You will find source code, schematic diagrams and even the PCB file on his
Tim from Imagitronics has created a cool alarm clock that was just a concept till he spent a few dollars on some parts and created it. “Several months ago, I stumbled across an interesting article on halfbakery.com about the possibility of an alarm clock in which the alarm only sounds when the user is actually lying in bed. The idea peaked my interest a bit. Last week I decided
“A stepper motor is a brushless, synchronous electric motor that can divide a full rotation into a large number of steps. When commutated electronically, the motor’s position can be controlled precisely, without any feedback mechanism” (citation from Wikipedia) Any DIY Maker should understand the workings of stepper motors, Ask any Robot maker, just about any motion control a robot makes is done with stepper motors. Here are a few links
