Generative Sequencer (needs a cooler name)

This is a collection of generative sequencers, written in Rust. Use it to send MIDI notes to your synthesizer or DAW. Sequencers currently supported:

• Euclidean

Installation on RaspBerry Pi

This is put here as reference, in case the original link (https://aidanblack.github.io/RPiMIDI.html) goes offline.

Remove baud setting from boot command

sudo nano /boot/firmware/cmdline.txt

Remove console=serial0,115200

Add kernel overlays to config.txt

sudo nano /boot/firmware/config.txt

Add:

enable_uart=1
dtoverlay=pi3-miniuart-bt
dtoverlay=midi-uart

Disable serial console

sudo raspi-config

Interfacing options -> P6 Serial -> Disable login shell -> Enable serial port

Reboot

Install TTYMIDI

sudo apt-get install libasound2-dev

wget http://www.varal.org/ttymidi/ttymidi.tar.gz
tar -zxvf ttymidi.tar.gz
cd ttymidi/
make
sudo make install

ttymidi -s /dev/ttyAMA0 -b 38400 & Will run ttymidi in the background. ttymidi -s /dev/ttyAMA0 -b 38400 -v Will run ttymidi in verbose mode (midi traffic displayed on screen).

Use

To operate the sequencer, you can attach a keyboard to whatever device is running this code, e.g. a Raspberry Pi.

Common keyboard shortcuts

The common keyboard shortcuts are:

• SPACE to start/stop the sequencer
• TAB to switch between active sequencer

Active sequencer

• W to increase the MIDI note by 1
• S to decrease the MIDI note by 1
• A to decrease the MIDI note by one octave
• D to increase the MIDI note by one octave

Euclidean sequencer keyboard shortcuts

• UP to increase the number of steps by 1
• DOWN to decrease the number of steps by 1
• LEFT to decrease the number of pulses by 1
• RIGHT to increase the number of pulses by 1

Mixer

• R to increase mixer ratio by 0.05
• F to decrease mixer ratio by 0.05

Try it out with FluidSynth

An easy way (on Linux) to get a feel for this sequencer is to attach it to a FluidSynth instance.

Get a SoundFont file

Next, you'll need to download a .sf2 SoundFont file, such as here: Roland SC-88 SoundFont file

Roadmap

• Add chords
• Add scales
• Add +AI sequencer