Les

FM-1 firmware · v0.1.0

SEQ-4

Four MIDI sequencers for the instruments around you, each in its own mode: melody, chords, drums or generative, on a lit 16-step grid.

Made by
Roberto Vega
Released
October 16, 2026
Install
On GitHub
Scan
Scanned, nothing harmful found · Oct 31 What we checked
Last checked
October 31, 2026

What SEQ-4 does

  • SEQ-4 turns the FM-1 into four MIDI sequencers that play synths, drum machines and software over four USB ports.
  • Each sequencer runs one of six modes, with up to 128 steps across eight pages and sixteen patterns.
  • The FM-1 makes no sound of its own here apart from a metronome click.
  • Every step holds velocity, octave, gate, glide, timing offset, repeats and a condition such as chance, first or fill.
  • White keys are the steps and black keys the rows; press SEQ to play the keys as a keyboard.
  • Record live with REC, step by step when stopped, or press REC twice to capture the notes just played.
  • Two LFOs, four mod lanes, Euclid, a drum generator, a random generator and a harmonizer shape what plays.
  • SAVE writes the sequencer into its pattern in flash, and a TRS jack takes in a keyboard or clock.

Its modes

Mono
Play a melody of one note per step, with the rows set to a scale's degrees.
Poly
Put up to seven notes on a step by playing a hand and tapping the step.
Chord
Place a chord on each step and set its type, voicing, spread, strum and bass note.
Multitrack
Program eight tracks of triggers, each with its own note, channel, port, length and division.
Stochastic
Set how likely each note, octave and length is and let the sequencer improvise.
Matriceal
Run four tracks of ten lanes for triggers, notes, intervals, pulses and more, each at its own speed.
The keyboard
Turn the keys into a playable keyboard, chord keyboard or drum pads for the sequencer on screen.
The patterns
See four rows of sixteen patterns and load, save, copy or empty them with the keys.
The arranger
Build ten songs from four lanes of slots, each a pattern played a set number of times.

What Les checked

SEQ-4 v0.1.0Scanned October 31, 2026

What we checked for

  • The file is exactly the one its author published
  • It's the same file we saw when this release first came out
  • It opens cleanly as an FM-1 firmware, nothing damaged
  • It doesn't show up on your computer as a keyboard, mouse or other input device
  • It doesn't show up as a USB drive or network adapter
  • Its text mentions no computer command tools, like PowerShell, Terminal or a download command

What we found

  • MIDI, as expected

StatusScanned, nothing harmful found

Les scans every firmware here whose file is public, and shows what it checked and what it found. A scan lowers the risk; it can't rule it out. This firmware is made by its author, not by Les or M-VAVE. Back up first, and install at your own risk. How Les scans firmware

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