For this project we are creating a device which can excite the strings
of a piano (or potentially any string instrument). This exitation
is meant to be created by means of spinning
motors which create a bouncing effect on top of an instruments strings.
This is the electroacoustic project base on DC motors and Arduino and piano
as an acoustic instrument.
These six DC motors are connected to the Arduino. I use Arduino's relay
to control the signal, which is capable of handling and switching
high-voltage or high-power circuits. A relay consists of an electromagnet
which, causes a switch to close or open.
I put these motors inside the balls to make vibration and these balls will
set up on strings of the piano. The sounds consist of a clash of balls with
strings and a combination of processing of vibration and acoustic piano.