A clone of the VCF found in the Elka Synthex around the CEM 3320 IC. This project is still 'work in progress', a prototype has been build, but it's not quite bug free.
the current design needs to be debugged
- done: first schematic & board design
- done: breadboard and test
- done: design frontpanel
- done: order PCB
- todo: build (working) prototype
https://bitbucket.org/XNOTOX/synthex-vcf/src/master/ https://electricdruid.net/cem3320-filter-designs/ https://www.instructables.com/How-to-Program-an-Attiny85-From-an-Arduino-Uno/