This is an effect type module. When a saw, sine or triangle wave is inputted it creates a moving string or chorus like texture to the sound. It uses no external control voltage, and is very easy to use.
Here are three MP3 demos of the circuit in action using Saw,
Triangle and Sine waveforms. Each demo has adjustments of the
settings of the module and of the pitch of the oscillator feeding the
For schematics, circuit description, a parts list and construction information, check out this PDF.
Boards currently available. Price for 1 board is $8.
Grayscale is offering an anodyzed aluminum panel for this project that looks pretty good.
Here's a picture of the Waveform Animator in my