Octatrick
Firmware for Octatrack MKI / MKII (Elektron)
Four octabam-built additions for OS 1.40C: a two-operator FM synth machine with chords, a scale quantizer with glide, direct pattern jump and a tuner; also USB MIDI and 20-channel USB audio.
by Tim Hastie
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- License notes
- Covers this repository only; octabam is separately MIT-licensed by Sam Banks.
- Source
- github.com https://github.com/timhastie/octatrick
- synth-engine
- fm
- scales
- chords
- usb-audio
- usb-midi
- performance
Description
The synth machine turns a FLEX track whose sample is named FMSYNTH*.wav into an FM voice with mono or paraphonic voicing and chord shapes. The scale quantizer offers 24 scales on a chosen root and survives power cycles. Direct jump starts a newly chosen pattern at the current step. The remix also adds USB MIDI and 20-channel USB audio out. Runs on the author's MKI on every build since 2026-09-26; not yet reported on an MKII.
Install notes
One-command build from your own OS 1.40C file; no firmware is included.
Version history
| Version | Date | Notes |
|---|---|---|
| MKI hardware-tested builds | 2026-09-26 | README states every build since this date runs on the author's MKI. |