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#Sonic Pi theremin using time of flight sensor VL531X
#Discrete note version (c: major {changeable})
#by Robin Newman, August 2018 updated August 2020
with_fx :reverb,room: 0.8,mix: 0.7 do
  use_synth :tri
  #start long note at zero volume: will be controlled later by k
  k = play octs(0,2),sustain: 10000,amp: 0
  set :k,k #store k in time-state reference :k
  live_loop :theremin do
    use_real_time

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# CircuitPython USB MIDI to serial MIDI converter for Raspberry Pi Pico (RP2040).

# IMPORTANT! Should *only be used for MIDI in*, i.e. from USB devices to hardware
# MIDI synths, and *not* in the opposite direction. Doing so could risk damage to
# the microcontroller, your computer, or both.

# Wire a 10Ω resistor from the Tx pin on the Raspberry Pi Pico or other 
# RP2040 board to the 3.5mm stereo jack tip, a 33Ω resistor from the 3v3 pin on
# the Raspberry Pi Pico to the 3.5mm stereo jack ring, and the ground pin on the
# Raspberry Pi Pico to the 3.5mm stereo jack sleeve.

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# 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

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Gstreamer Pipeline Samples

Table of Contents:

• Gstreamer Pipeline Samples
  • Tips for Debug
  • Video
    • display test video
    • record to file
• record and display at the same time(queue)