Berlin School

8 step analogue sequencer under digital control in MU format

Berlin School is based around the classic CD4017 Johnson counter chip, under the control of a 16F1765 PIC which provides a few novel features:

Onboard clock division: /1, /2, /3, /4, /5, /6, /7, /8 (integers)
External voltage control of clock division
Quantised output (chromatic)
Quantised manual transpose (chromatic)
Quantised voltage controlled transpose (chromatic)
4 step / 6 step / 8 step options

Berlin School has a 5 octave range (0V to 5V). A fun little feature is that if you’re running a sequence and then transpose it, any notes which end up being transposed above 5V are transposed down by one octave (rather than ‘clipping’ against the 5V ceiling), thus preserving the melody!

https://frequencycentral.co.uk/product/mu-berlin-school/