This blog serves as an information repository for myself, and the information is posted for consumption by the circuit bending community at large. Feel free to use any information gleaned herein for your own bending purposes.

Warning: I make no guarantees of my methods as I know next to nothing about electronics. I will however guarantee that you will end up destroying a toy or two in your circuit bending endeavors and if you do so, it is your own fault.

You can send your questions, tips, news, ideas, et. al. to octatone@gmail.com.

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Saturday, November 10, 2007

Octatone's Bends: Vtech First Words Toy

I bought this the same day I grabbed the 99 cent geetar. This past Wednesday I finally bent it. I found pitch up and pitch down bend points as well as a jump that only works when the pitch up/down bends are active. The final result is a fairly simple noise making toy. For playability I added jumps to the pitch up/down bends to max them out instantly.

Inside you can see the signal flow of the bends. The pot I used has a built in switch which is handy. I placed the down bend pot and the body contacts next to each other because they work best together - the body contacts don't work as consistently with the pitch up bend. Placing the up bend toggle and photocell above the down bend makes it easy for me to remember what they do. The pushbuttons short the pitch bend signal path for instant max high/low. There is a 250k resistor on the signal from the speaker to the 1/4 out tip to tame the way too hot signal for use in a mixer/amp.

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