Pedalboard OS

Low latency Audio Operating system based on the open source ELK Audio OS.

Hardware

• Raspberry Pi Compute Module 4, 4 GB RAM, 32GB eMMC, Wireless
• Waveshare CM4 Nano A
• HiFiBerry DAC+ADC

Configuration

The Pedalboard OS is based on Elk Audio OS.

Since v1.0.0 RPI CM4 is supported natively.

1. Enable USB host

On the compute module USB host is disabled by default.

Add the following line to config.txt to enable it.

dtoverlay=dwc2,dr_mode=host

2. Enable WiFi

• boot the board connected to LAN and ssh into it with ssh mind@elk-pi
• follow https://elk-audio.github.io/elk-docs/html/embedded/working_with_elk_board.html#over-wifi

3. Change hostname

sudo echo pedalboard > /etc/hostname
sudo reboot
ssh-copy-id mind@pedalboard
ssh mind@pedalboard

4. Install pedalboard software

Midi

sudo mkdir /mnt/pico
cd /udata
git clone https://github.com/pedalboard/pedalboard-midi.git
cd pedalboard-midi

Audio

cd /udata
git clone https://github.com/pedalboard/pedalboard-audio.git
cd pedalboard-audio
make install-plugins
make install
make restart
make status

Midi Bridge

cd /udata
git clone https://github.com/pedalboard/sushi-osc-midi-bridge.git
cd sushi-osc-midi-bridge
make install
make start
make status

Backup on OSX

1. run usbbot
2. find disk diskutil list
3. copy sudo dd if=/dev/diskX of=backup/pedalboard-audio-20230129.dmg
4. shrink the image with pyshrink