If you want to learn how to work with IR over long distances have a look at the article that Giorgos Lazaridis wrote. He uses 555 timers to generate the carrier frequency needed for the IR reciever which is the type you would find in a DVD player or a TV set (amongst a million other remote controlled things). Giorgos is getting a very healthy 10 meters of range from
This small DIY MP3 Player is much like the Apple Shuffle. Not a simple project since it consists of all tiny surface mount parts. The code for the 18F88 is available for download so you can build your own. “This player features a shuffle mode, basic track navigation, volume control, FAT32 support, fragmented file support, an unlimited number of files on the root directory, and high quality playback. Files at
The Department of Homeland Security has something they call the Threat Advisories, these come in 5 levels. Turns out some people would like to have one of these hanging on their wall so that they can crank up the threat level when they want to. Michal Zalewski thought it would be a good idea to make a display of his own, the display uses the same concept as the Word
This has to be one of the nicest Word Clocks I have seen yet. I am thinking I have to add this to my long list of project ideas! This one is in Polish but changing languages in this design is simple. The lines at the bottom are used to indicate minutes. So that this clock is not only cool but accurate.
Many of us use transistors everyday but don’t take the time to think about how the magic works. Bill Hammack explains how a replica of the first transistor works. “Bill uses a replica of the point contact transistor built by Walter Brattain and John Bardeen at Bell Labs. On December 23, 1947 they used this device to amplify the output of a microphone and thus started the microelectronics revolution that
With games needing more and more movement room you are forced to stand further away from the TV screen. This is most evident with the new XBox Kinect. Alex Uslontsev had this problem when he got a Kinect but his 37 inch screen wasn’t up to the task of making game play immersive. His solution was to build a cool 110 inch big screen on a budget. “I got myself
Triuky left a comment about his DIY Circuit Board UV Exposure Box with Timer in the comment section of this DIY UV LED Double Sided PCB Exposure Box he us using some small UV florescent tubes similar to the ones that I used when making my UV PCB exposure system. Instead of purchasing a tube with ballast he cracked open a few screw in florescent fixtures and used the small
