randomtune.py

import time
import board
import busio
import usb_midi
import adafruit_midi  
from adafruit_midi.note_on          import NoteOn
from adafruit_midi.note_off          import NoteOff
import random

USB_MIDI_channel = 1  # pick your USB MIDI out channel here, 1-16



usb_midi = adafruit_midi.MIDI(
    midi_out=usb_midi.ports[1], out_channel=USB_MIDI_channel - 1
)

counter = 0
current_note=10

while True:
    # read all the knob values

    counter = counter+1
    if (counter == 100) :
        usb_midi.send(NoteOff(current_note, 10))
        current_note = random.randint(0,100)
        usb_midi.send(NoteOn(current_note, 10))
        counter = 0

    time.sleep(0.01)