831 project page

The 831 is a 3-IN, 3-OUT voltage interval switcher that does not have separate octave and step switches. Instead the intervals (5 up and 5 down) are selectable by the user at the time of construction. It can be used to instantly select musically useful intervals instead of trying to manually tune them each time. 

 

 

photos
schematics

parts list
instructions

PCBs SOLD OUT !
Rotary switch issues

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