Scannone is a sequencer where you can draw the notes
Rotolo is a clock generator with a crank

This is my Diploma projects at Filmakademie Baden-Württemberg

On Scannone with a chalk marker you can draw a pattern on a rotating plexyglass disk that is going to be read either as CV notes or as gates.
Gates are useful to trigger drums and change parameters on the synth.
CV notes are meant to be used for melodies.

Scannone has also an octave selector and motor control system allowing to play forward, backwards and set the rotation spead, either using a clock input or a potentiometer.

Rotolo is a krank system giving an output tempo based on the rotation speed, as the speed is reached the crank keeps giving the output clock.

It has an integrated LFO and a time division selection used to double the output clock.

Scannone uses a series of photodiodes to scan the the disk surface.
Inside a 3D printed enclosure there is an array of leds on one side and on the other side their matching photodiodes, if there is some paint on the glass the light won't get trough and the photodiode will close.
Closed diodes will turn on a gate that pretty much works as a keyboard key.

The project was meant to work with a proper scanner sensor, but I was a rookie back then and didn't manage to understand the whole 40 pages of Toshiba documentation.

The devices has its flaws, for example I didn't took in count the internal resistance of the integrated switches I used so the note signal depending on the situation can play out of tune. and the motor is too weak for the system to be used as meant (or maybe the whole device is just too big!)

The motor is run by a stepper motor and an Arduino.

To be used in combination with Scannone I built a drum sampler in a pizza box using a Teensy board


Rotolo is made using a motor recycled from an old hard drive in combination with an Electric Druid Tap Tempo LFO IC.

The crank by rotating the HDD motor generates a 3 wave voltage that is being squarized and fed to the tap tempo IC responsible for the constant clock output



Ela Duca - Management

Patrick Kuhn Botelo - Electronics

Larissa Bonitz - Enclosure

Paolo Scatena - Arduino programming

Michael Bohnenstingel - Video

Me - Direction, Electronics and CAD