todbot

// lightly modified to print out the top level directory as strings, 
// like for use with a display

/*********************************************************************
 Adafruit invests time and resources providing this open source code,
 please support Adafruit and open-source hardware by purchasing
 products from Adafruit!

 MIT license, check LICENSE for more information
 Copyright (c) 2019 Ha Thach for Adafruit Industries

todbot

# builds on John Park's Parsec on drawing circle https://www.youtube.com/watch?v=nI55N6q0sUo
import math
import time
import random

# Set up the display
display = board.DISPLAY

# Create a blank displayio group
group = displayio.Group()

todbot

import board
import displayio
import math
import time

# Set up the display
display = board.DISPLAY

# Create a blank displayio group
tilegroup = displayio.Group()

todbot

// Port of code at https://efundies.com/src/arduino/midi-solenoids.ino
// to use fortyseveneffects MIDI library and Adafuit_TinyUSB
// Be sure to set Tools -> USB Stack: Adafruit TinyUSB in Arduino IDE
#include <Adafruit_TinyUSB.h>
#include <MIDI.h>

// USB MIDI object
Adafruit_USBD_MIDI usb_midi;
// Create a new instance of the Arduino MIDI Library,
// and attach usb_midi as the transport.

todbot

# led animations + audio on RP2040 Pico
#
import os, time, random
import board, keypad
import audiomixer, audiocore
import audiopwmio
import neopixel
from adafruit_led_animation.animation.rainbow import Rainbow
from adafruit_led_animation.animation.rainbowchase import RainbowChase
from adafruit_led_animation.animation.rainbowcomet import RainbowComet

todbot

# SPDX-FileCopyrightText: Copyright (c) 2023 Tod Kurt
#
# SPDX-License-Identifier: MIT
"""
`sleepy_keys`
=============

HID System Control Powerdown / Sleep / Wake device helper library

* Author(s): Tod Kurt

todbot

# usb_host_midi_demo.py - demo new USB MIDI Host capability in CircuiPython
# 27 Nov 2023 - @todbot / Tod Kurt
# adapted from https://github.com/adafruit/Adafruit_CircuitPython_USB_Host_MIDI/blob/main/examples/usb_host_midi_simpletest.py
# needs "circup install adafruit_midi adafruit_usb_host_descriptors"
# and hand-copy library from https://github.com/adafruit/Adafruit_CircuitPython_USB_Host_MIDI
import time
import board
import usb.core
import adafruit_usb_host_midi
import adafruit_midi

todbot

# phase accumulation oscillator experiment
# 13 Nov 2023 - @todbot
# basically just copying
#   https://github.com/wntrblm/Sol/blob/master/firmware/winterbloom_sol/lfo.py
#

import time
import math
from supervisor import ticks_ms

todbot

# "output" a waveform of a given length at a given frequency
import time
import math

# frequency in Hz of wave
frequency = 3

# length of the wave, number of samples in the wave
LENGTH = 13

todbot

# diagnose https://old.reddit.com/r/circuitpython/comments/17snve6/trouble_with_ssd1306_and_asyncio/
# 11 Nov 2023
import asyncio
import random  # for creating synthetic data
import time
import board
import digitalio
import busio
import displayio
import adafruit_displayio_ssd1306