<p>All of the oscillators in the Drone Lab start out as square waves. They go through a series of filters and distortion circuits which shape them in various ways, but they start as square waves. That means they are basically digital logic signals (high-low) and can be processed by digital logic ICs VERY easily and with some VERY cool results.<br />
For instance running two oscillators into an AND or XOR circuit can create some really cool ring mod-like effects. Running an oscillator into a counter like the 4017 can give you sub octave oscillator outputs.<br />
There is a community of folks developing digital logic audio circuits for a project called the Lunetta synth. I definitely recommend you check out the Lunetta forum on the electro-music DIY forums.<br />
http://electro-music.com/forum/forum-160.html</p>
<p>The oscillators in the Drone Lab are generated using a 40106 hex schmitt trigger IC. This is a popular IC in the Lunetta community and people have posted lots of schematics for how to use the 40106 in different ways.</p>
<p>One of the cool things about digital logic ICs is that they require little to no extra components to use. You don't need lots of resistors and caps, just the IC. Which means you can fit a logic IC in the Drone Lab's little proto area.
</p>
