This project is brand new. I just ordered the PCBs (5/35/12) and will be testing them out in a few weeks.
I will post schematics once the boards have been tested. 
The image below is of 4 analog synth modules.
1. QUAD VCO (wide range VCOs from LFO to audio)
2. VCO/VCA/VCF (single voice module)
3. S&H/DUAL RING MODULATORS/COMPLEX SEQUENCER(FX and modulation module)
4. TOUCH CONTROL,PROGRAMMER (touch controlled voltage and preset bank)
stacking control bo
Layout is standardized to allow easy connection with stacking interface and control boards, or jumpers can be run to panel mounted hardware on a custom interface. 
The stacking control board will enable the builder to connect all external hardware simply by plugging the control board on top of the module. 
I will design the stacking control panels once the PCBs have been tested. I intend to use Arduino style headers and bread board jumpers for all modular signal patching which will make this a powerful and very compact system. 

<a href="http://casperelectronics.com/wp-content/uploads/MiniModularNoiseSynth/MiniModularSynth.png"><img src="http://casperelectronics.com/wp-content/uploads/MiniModularNoiseSynth/MiniModularSynth-461x1024.png" alt="" title="MiniModularSynth" width="450" height="1010" class="alignnone size-large wp-image-1060" /></a>

