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KeySense

2019
Ólafur Arnalds, Benjamin Maus

An optical piano key sensing device senses key presses and velocities of piano keys on any 88 key piano or keyboard instrument. It can be quickly installed without any modifications to the piano by resting it on the left and right key blocks of the piano.

Working on the first prototypes used for the live tour

Working on the first prototypes used for the live tour

Specifications

Technology

Mechanical

Controller

Mechanical Elements

Block for adjusting the height

Block for adjusting the height

Magnetic interconnect with spring-loaded contacts

Magnetic interconnect with spring-loaded contacts

Electronics

Sensor PCB for one octave and additional four notes

Sensor PCB for one octave and additional four notes

Inside the controller box

Inside the controller box

Module interconnect

Module interconnect

Credits

Stage photographs by Maximilian Koenig

Here are some pictures of the production and development process.