midi_7555_FM.MOV

This is a recording (mostly for sound) of a simple example of controlling an analog sound circuit with MIDI. In this example a Novation Remote Zero sends MIDI CC messages on controllers 0-5 to control a 6 ch digital potentiometer. The Arduino translates the MIDI into commands for the digi-pot. The digi pot controls the pitch duty cycle and amplitude of two 7555 astable oscillator circuits. The output of one oscillator is connected to the pitch control of the second. Making a sort of frequency modulation circuit. FM with square waves = rock and roll.

Category:

Education

Tags:

• Arduino
• Music Technology
• Electronics
• Electronic music
• MIDI

[langsound]

@Quadraphonicsoul I do not have a schematic yet. but the sound making part is quite simple, The output (pin 3) of one 7555 astable oscillator is connected to the voltage control input (pin 5) of the other. see wikipedia 7555 article for astable diagram (hmm, youtube won't let me post link... sorry) 

[Quadraphonicsoul]

this thing is sweet. do you have a schematic for it?