Speaker Projects

Evasive Beeping Thing

Evasive Beeping Thing

The Evasive Beeping Thing is appropriately named, since it dutifully does exactly what its name implies: it sends out a 5-second, high-pitched beep every few minutes. The source is extremely...

Posted by Brad Graham

Categories: Fun & Games | No Comments


Charlie’s RFID Teddy Bear

Charlie’s RFID Teddy Bear

This location-aware teddy bear reads RFID tags and plays different customizable sounds depending on where it is or what object it’s near — other toys, books, CDs, anything. Charlie’s Bear...

Posted by David Harris

Categories: Music, Arduino | 3 Comments


Light Theremin

Light Theremin

Anyone who’s shivered in the dark at a scary movie or laughed at the unintentional cheese-ball of a bad sci-fi (paging Ed Wood) knows the eerie sounds of the theremin....

Posted by Steve Hobley

Categories: Music | 11 Comments


Whack-a-Mole Game

Whack-a-Mole Game

Jim Chen designed an excellent electronic "Whack-a-Mole" game using 555 timers, LEDs, and bent-diode touch sensors, that you can build on a solderless breadboard; for a full explanation, check out...

Posted by Steve Hobley

Categories: Electronics, Fun & Games | No Comments


Chladni Plate

Chladni Plate

Use a broken speaker, bits of wire, and tape to prepare a coneless voice coil driver, then use it to generate standing waves on a sheet of metal, making sound...

Posted by Edwin Wise

Categories: Music, Science | 1 Comment