todbot

# trinkey_theremin_pitch_code.py -- Trinkey MIDI Theremin! with pitch control!
# 2021 @todbot
# left antenna: pitch (by multiple MIDI notes, put your synth in legato mode)
# right antenna: filter cutoff
# video demo in comment below
#
import time
import board
import neopixel
import touchio

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

// Simple MIDI input using MIDI Library on Pico
// 2 Mar 2023 - @todbot / Tod Kurt

#include <MIDI.h>

// Serial MIDI, could be "Serial1" or "Serial2" depending on pins on Pico
// See: https://arduino-pico.readthedocs.io/en/latest/serial.html
// and https://pico.pinout.xyz/
MIDI_CREATE_INSTANCE(HardwareSerial, Serial1, MIDIserial); 

todbot

# generated by PrusaSlicer 2.2.0+ on 2020-04-02 at 04:02:32 UTC

[print:0.175mm - Monoprice Mini Select v2]
avoid_crossing_perimeters = 0
bottom_fill_pattern = rectilinear
bottom_solid_layers = 3
bottom_solid_min_thickness = 0
bridge_acceleration = 0
bridge_angle = 0
bridge_flow_ratio = 1

todbot

# wire a rotary encoder to GP2,GP3, and encoder switch to GP4, with commons going to Gnd
import board
import rotaryio
import keypad
import usb_hid
from adafruit_hid.keyboard import Keyboard
from adafruit_hid.keycode import Keycode

CLK_PIN = board.GP4
DT_PIN = board.GP3

todbot

# synthio_midi_synth.py - pretty usable MIDI-controlled synth using synthio in CircuitPython
# 11 May 2023 - @todbot / Tod Kurt
# Uses cheapie PCM5102 DAC on QTPY RP2040
# Video demo: https://www.youtube.com/watch?v=N-PbbWWDE6k
# Features:
# - midi velocity controls attack rate (gentle press = slow, hard press = fast)
# - notes have small random detune on all oscillators to reduce phase stacking
# - adjustable number of detuned oscillators per note 1-5 (midi controller 83)
# - five selectable waveforms: saw, squ, sin, noisy sin, noise (midi controller 82)
# - vibrato depth on mod wheel (midi controller 1)

todbot

# dual_i2s_player.py -- demonstrate using two I2S stereo DACs at once on RP2040 / Raspberry Pi Pico
# 19 May 2023 - @todbot / Tod Kurt
# video of this code: https://www.youtube.com/watch?v=CgqECxhqJEo
import time, board, audiocore, audiobusio

# qtpy rp2040 pins
# in this case, board.* names just match silkscreen, don't indicate functionality
lck1_pin, bck1_pin, dat1_pin = board.MISO, board.MOSI, board.SCK
lck2_pin, bck2_pin, dat2_pin = board.SCL, board.SDA, board.TX

todbot

/* 
  tinyusb_hid_ctrl_mousesscroll.ino
  2021 @todbot 
  Modified example from
  https://github.com/adafruit/Adafruit_TinyUSB_Arduino/blob/master/examples/HID/hid_composite/hid_composite.ino

  This sketch demonstrates multiple report USB HID.
  Press button pin will move
   - press 'Ctrl' key
   - mouse scroll up using scrollwheel

todbot

/**
 * Modified 12 Jun 2024 - @todbot -- added USB MIDI forwarding
 * originally from: https://github.com/rppicomidi/EZ_USB_MIDI_HOST/blob/main/examples/arduino/EZ_USB_MIDI_HOST_PIO_example/EZ_USB_MIDI_HOST_PIO_example.ino
 * Be sure to set "Tools / CPU Speed" to 120 MHz or 240 MHz and 
 * be sure to set "Tools / USB Stack" to "Adafruit TinyUSB" 
 */
 
 /* 
 * The MIT License (MIT)
 *

todbot

"""
beatfader_demo.py -- fade between different drum loops
10 Jun 2024 - @todbot / Tod Kurt

originally from
https://github.com/todbot/circuitpython-tricks/blob/main/larger-tricks/beatfader.py

Demonstrate how to play WAVs via PWM audio

Functions, designed for QTPy RP2040 or Xiao RP2040: