The NovaDrone is an open source, analog sound and light synthesizer.
<a href="http://casperelectronics.com/wp-content/uploads/NovaDrone/V1.2/NovaDrone.jpg"><img src="http://casperelectronics.com/wp-content/uploads/NovaDrone/V1.2/NovaDrone-573x1024.jpg" alt="" title="NovaDrone" width="450" height="900" class="alignnone size-large wp-image-1045" /></a><br></br>
<iframe width="450" height="225" src="http://www.youtube.com/embed/d5PooXdGQzU?rel=0" frameborder="0" allowfullscreen></iframe>
PCB:
<a href="http://casperelectronics.com/wp-content/uploads/NovaDrone/V1.2/NovaDroneRender.jpg"><img src="http://casperelectronics.com/wp-content/uploads/NovaDrone/V1.2/NovaDroneRender.jpg" alt="" title="NovaDroneRender" width="400" height="703" class="alignnone size-full wp-image-1030" /></a>
SCHEMATIC:
V1.2 fixed virtual ground error
5/1/2012
V1.3 fixed signal path errors
5/16/2012 
<a href="http://casperelectronics.com/wp-content/uploads/NovaDrone/HomePage/NovaDroneV1.3_schematic.png"><img src="http://casperelectronics.com/wp-content/uploads/NovaDrone/HomePage/NovaDroneV1.3_schematic-225x300.png" alt="" title="NovaDroneV1.3_schematic" width="225" height="300" class="alignnone size-medium wp-image-1046" /></a>

PROTOTYPING:
<iframe width="400" height="275" src="http://www.youtube.com/embed/XYliYHHihzU?rel=0" frameborder="0" allowfullscreen></iframe>
<a href="http://casperelectronics.com/wp-content/uploads/NovaDrone/V1.2/NovaDroneV1.2_schematic.png">