Alternate firmware for the ginko synthese grains eurorack module

NOTE: Although I can't imagine this damaging your grains module, you install this at your own risk!

http://www.ginkosynthese.com/product/grains/

Code by a773 (atte.dk) and released under the GPL licence.
github: https://github.com/attejensen/grains

Clock multiplier/divider (mult_div)

https://www.instagram.com/p/BBI0L4PmHXQ/

Features:

• CV controllable clock multiplication/division
• Separate knob/cv in for mult and div
• Switchable between simple ratios (1,2,4,8...) and prime ratios (1,3,5,7...)

Pot 1/Input 1
Multiplication

Pot 2/Input 2
Division

Pot 3
CCW: Simple ratios (1,2,4,8,16...)
Middle pos: Stopped
CW: Prime ratios (1,3,5,7,11,13...)

Input 3
Clock in

Out
Clock out

Square wave oscillator

https://www.instagram.com/p/BEbCrmOGHaN/

Features:

• 5 octave range, lowest note C2
• In tune with pot 3 CCW, fully CW is one octave up
• Pot 1 turns quantization to semitones on/off (CW/CCW)