david 8cd796e3dd Initial commit: Arduino Uno Q USB Audio Synth project ...

- USB gadget (UAC1 + MIDI) with boot persistence
- USB host mode with auto-detection
- Pure Data synth patch with ALSA + UDP netreceive MIDI input
- MIDI rawmidi-to-UDP bridge (midi-bridge.py)
- LED matrix visualization (led-matrix-viz.py via arduino-router RPC)
- MCU sketch for LED matrix control (Arduino_RouterBridge + ArduinoGraphics)
- Conftest/OPA Rego policy validation suite for .pd files
- gen_synth_pd.py: programmatic .pd file generator
- System services: midi-bridge, led-matrix-viz, pd-synth-auto, usb-role-detect
- Justfile with deploy, enable, diagnostic recipes
- Diagnostic script (diag.sh)

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..

99-usb-role.rules

Initial commit: Arduino Uno Q USB Audio Synth project

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asound-i2s.conf

Initial commit: Arduino Uno Q USB Audio Synth project

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asound.conf

Initial commit: Arduino Uno Q USB Audio Synth project

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configure-usb-audio.sh

Initial commit: Arduino Uno Q USB Audio Synth project

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configure-usb-host.sh

Initial commit: Arduino Uno Q USB Audio Synth project

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detect-i2s-device.service

Initial commit: Arduino Uno Q USB Audio Synth project

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detect-i2s-device.sh

Initial commit: Arduino Uno Q USB Audio Synth project

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detect-usb-role.sh

Initial commit: Arduino Uno Q USB Audio Synth project

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led-matrix-viz.service

Initial commit: Arduino Uno Q USB Audio Synth project

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midi-bridge.service

Initial commit: Arduino Uno Q USB Audio Synth project

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on-usb-role-change.sh

Initial commit: Arduino Uno Q USB Audio Synth project

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pd-synth-auto.service

Initial commit: Arduino Uno Q USB Audio Synth project

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pd-synth-i2s.service

Initial commit: Arduino Uno Q USB Audio Synth project

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pd-synth.service

Initial commit: Arduino Uno Q USB Audio Synth project

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reset-usb-gadget.sh

Initial commit: Arduino Uno Q USB Audio Synth project

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usb-gadget-audio.service

Initial commit: Arduino Uno Q USB Audio Synth project

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usb-role-detect.service

Initial commit: Arduino Uno Q USB Audio Synth project

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