For this assignment I have experimented with the capacitive sensing technology. My aim was to sense how much a finger covers a tonehole in a simple wind instrument without keys like the Kaval.

I have used the Arduino IDE to capture he signal from the simple sensor, transmit it through the serial port and finally visualize it with MAX MSP programming language.

My simple code included a capacitive sensing library for the capacitive sensing which in my case has performed very smoothly with out issues.

The video below shows the performance of the system. The lines that appear as a comment in the code are used to visualise another sensor connected to my board (a breath sensor which my colleague Oilvia Kotsifa has experimented with for the same assignment).

The video illustrates the activity of the capacitive sensor only.

The Arduino board has been used for the prototyping.

The following image shows a quick prototype from paper we used to test the electronic circuitry.

I have also developed a simple shield with 2 capacitive type buttons. Bellow you can see the Modela milling the board. The Eagle files are: schematic and board

The edited image files ready for Modela (fab modules cam software) are illustrated below.

The following video demonstrates how it was used with Fabduino

The code used for the video is: