a machine that makes sort of party like music.. (it can also make other types of music).
The circle with the lines that you see on the top of the machine, rotates and displays the note you are playing.
When you play a C the lines in the middle circle will be standing still.. from the C it will go outward, displaying all notes on a keyboard in 12 steps.
It works by making a LED blink in the frequency of the sound, and rotating the image at a set speed. For the distance between the lines i used this table, it displays musical frequencys in centimeters.
I made a script in PHP that can transform the frequencys in a circle, that can be used to display the notes.
The circle can also be used to find notes using the potentiometers on the synth.
With this form, you can generate your own circle with the frequencys you want..
The sound part of the machine is based on logic ICs, but it also has a simple noise generator, and a filter.
The sound the synth generates, is a 4 bit saw, or the same saw clipped to a square.
The 4 bit saw is made with a binary counter and a resistor ladder. A nice feature is that you can mix in the binary pins, making one octave jumping chords (like c1 + c2 + c3 or d1 + d2 + d3 and so on).
Credits to helpful information here
V2a
V2a-V1-V2b
V2b
V1
