It’s a great project paired with a microcontroller (Arduino, EFX-Tek Prop-1, or Picaxe) that can trigger the playback of an MP3 or WAV file. How it works: The circuit inside the skull is replaced by a small, custom-made board that will respond to “beeps” on an audio track when the circuit hears a “beep” it turns on the motor in the skull, opening the mouth. The professionally-made board is quite reasonably priced, and can be bought as a bare board where you supply the parts, as a kit with the parts, or assembled (see step 2 for details). We made a custom-designed circuit that needs less than $5.00 of parts – plus we’ve arranged with a company to offer a professionally printed circuit board so you can assemble it like a kit, instead of working out how to build it on prototyping board. Other versions of this project on the web use parts that cost lots more than the skull! These talking skulls are usually about $20.00 new, and less off-season. Some friends and I worked out how to do this inexpensively as a matter of fact, this is the least expensive way possible to do this. I think this makes him harder to understand. Also, he doesn't just talk - he's got his own sound effects and music as well. Notice that I have to snap my fingers at it to get it to play. What if you could hack one so that you could make it say anything you want? And have it work with any speakers you own? And they only say a few pre-programmed things. They look good, but they have a tiny speaker inside them, making them hard to understand. Every Halloween, inexpensive talking skulls are available as decorations.
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