Update 2016-03-16: I added a vero layout It has been a slow start to 2016, but a few new projects are finally coming together. Here's a new DIY project - The Sentient Machine.
It's a resonant lowpass filter modulated with an LFO. It has a couple of different voice settings, a standard wah sound and a special vowel sound. At slow speeds it makes a cool spacey sweeping sound reminiscent of a phaser, and at minimum depth and medium speed it almost sounds like a tremolo.
This circuit is pretty advanced, but it's a straight forward build. The PCB is made to fit inside a 125B enclosure.
The madman Savvas (@tagboardeffects) submitted a vero layout. Thanks! Please note that it's not yet verified.