Electronic Hacks

Old Silver Flash adapted for a Digital SLR

If you have some old camera flashes in the closet that you can’t use with your new DSLR have a look at this project that Adapts an Old Silver Flash for use on a Digital SLR over at Rien que pour les yeux. There is a 5.1 volt zener diode in the circuit to protect the TTL fire circuit of your camera. Please follow the warning on the site that

DIY Sentry Gun

This is a bunch of electronics that have been taped together to emulate a sentry gun. It is supposed to scan looking for the range of an object and when something moves it is supposed to stop and speak a command to what just moved. It doesn’t quite work properly but I am sure we will see it working a bit better in the future. The Parallax text to speech

Altera DE2 based 3D Pong Game

Sean Chen and Yunchi Luo packed some cool 3D Pong Game Play into 3 Altera DE2 Development boards. Two digital cameras have their composite outputs feeding into the game hardware. They are using the image in the game and the system is monitoring the image for the colored paddles.  These represent just one of the many great ECE 5760 projects. Thanks Bruce “The game software runs on a third DE2

Long Distance IR Beam

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

Open Source Apple Shuffle like DIY MP3 Player

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

Doorbell Control

If you are getting tired of your plain old doorbell that just goes ding dong when someone presses the button why not jazz it up with a bit of electronics. Nicholas Skinner has done just that with his Doorbell System. “Features: Sense Bell Press – Allowing for triggering of other events on press, such as additional remote ringers in other parts of the house, computer popup notification and possibly cameras

Halloween Electric Chair

I have seen lots of great Halloween Prop builds but this Halloween Electric Chair that Robo and his son made for a school haunted house takes the cake. I love the mix of pneumatics and electrical. The sensor is IR which I obviously love since that is exactly how my Stair Lighting System is activated except by a leg not an electrocuted head! The sander under the seat is sure