Also, using VCF 2 (filter of mono 2) as a stand alone filter, with its own line out.
Altogether will have dual VCO with in-built CV mixer to mix them, squarewave VCO waveshaper with PWM, a dedicated filter, and an audio out mixer to mix the mono 1&2 and the VCF 2 outputs.
To do all this, I utilized a voltage inverter to get +/- 5V supply voltages for the CV mixer circuit and the audio mixer circuit. The CV mixer was modelled from Din Sync's module(http://www.dinsync.info/2010/12/synovatron-diy-eurorack-prototyping-kit_31.html), with different Op-Amp and smaller supply, and the Audio mix out circuit was taken from the "simple mono mixer" at MFOS (http://www.musicfromouterspace.com/).
Anyway, still got tons of work to do - but should be done soon!
|Here's the Square Wave & PWM board with all components installed. This circuit board includes a gated output.|
|Here's the votlage inverter and CV mixer circuits.|
|Same board as above, but with added Audio mixer circuit.|
|Board mounts for some switches and another board for the PWM pot, Square/Saw select switch, and polarizing switch for CV mixer; both were manufactured via chemical etching.|
|Where they'll sit in enclosure.|
|Knarling me Knobs!|
|Looks more like monotron style knob.|
|Next to monotron knobs.|
|What they'll look like in the box.|
|Mounts for the filter knobs.|
|Mounts for the VCO mixing pots.|
|All the Op-Amps, and a spare 5532.|