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FM-1 firmware · fantasma-v1.1

Fantasma

A ghostly ambient synth: endless nature-noise drones, self-playing FM bells, a pad that writes chord progressions and an Omnichord-style strum mode.

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

What Fantasma does

  • Thirteen engines include AMBI for sea, rain, fire and vinyl beds and BELL for soft two-operator FM bells.
  • SEQ > AMBIENT builds a whole ambient piece: OCT+ picks sounds, a key and a scale and starts the Pad, bells and noise.
  • The sequencer holds 64 steps per track with chords, ties, accent, slide, per-step chance, velocity and ratchets, plus live loop recording with overdub.
  • Four parts named PAD, LEAD, ECHOES and NOISE each carry their own colour, engines and warm presets.
  • OMNI turns the keys into an Omnichord: black keys hold chords, white keys strum, ENV makes it minor and LFO adds the seventh.
  • On Echoes the bells play themselves from four drifting loops, and the keys choose which notes they draw from.
  • AMBI reverb stretches tails from 7 seconds up to about 90 seconds, next to delay, chorus, insert effects and the SLICER.
  • Store sounds in 32 user preset slots and four projects, and the FM-1 starts again with the music you left.

Its modes

HOME
Watch the oscilloscope or the four tracks and reach the selected part's four main knobs.
MIXER
Tap HOME again for the mix of the four parts.
CLOCK
Set the BPM, the swing and the clock source.
STEP
Write the 64 steps in the piano roll or the drum grid and lock parameters on a held step.
DETAIL
Set the cursor step's chance, ratchet, nudge and velocity on the four knobs, drawn as lanes.
AUTOMATION
Work through one list of the track's step events, locks and automation to change, add or delete them.
AMBIENT
Press OCT+ to draw a new Pad, Echoes and Noise in one key and scale, OCT- to stop them.
SONG
Chain up to 16 sections, each naming the project slot every track plays and its repeats.
GEN
Set the Pad's generator: DENS, BARS, CHORDS and SEED.
CHORD
Pick the chord keys, including OMNI and OMNI H, the voicing, and the Pad's DENS and BARS.

What Les checked

Fantasma fantasma-v1.1Scanned 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 and audio, as expected
  • A serial port, which many FM-1 firmwares keep for debugging. It can't type into your computer.

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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