M-VAVESynths
Pocket 6-operator FM synth, 27 keys, colour screen, TRS MIDI
The FM-1 is a battery-powered pocket FM synthesizer made by M-VAVE and released in mid-2026. It has a six-operator FM engine with 32 algorithms and up to 12 voices, a 27-key silicone keyboard, seven knobs, a colour TFT screen and a 16-step sequencer. It has a built-in speaker, a 3.5 mm stereo output, and MIDI over USB, Bluetooth LE and a 3.5 mm TRS input, with the engine running on a JieLi AC791N SoC.
Flash is single-bank. AL-255/FM-1-RE states that the update protocol is not a demonstrated recovery mechanism and that ROM recovery, rollback and safe interrupted-write behaviour are not established, so there is no established recovery path if a write is interrupted. The aroum hub documents community recovery attempts (plain-USB mask-ROM mode with jl-uboot-tool, RP2040 USB_KEY dongles) that FM-1-RE has not verified; treat them as unconfirmed. Do not unplug during a write, and take a backup first where the installer offers one. Community advice is to return to stock V15 before flashing a different custom firmware rather than flashing one over another. Installs are done from browser WebMIDI installers (Chrome or Edge, USB) or a Python script; most return to V15 through M-VAVE's M-UPGRADE or the installer's own restore. Entries that patch the stock image (macropad patch, czietz patcher) are patch-your-own and need your own V15 (or V14) file; never share the patched result. Stock firmware is V15, released 2026-07-30. Hubs: aroum/fm1-custom-fw (curated directory plus REVERSE_ENGINEERING.md), fm1-editor.com/firmware, cicloid/awesome-fm-1, AL-255/FM-1-RE (WTFPL). The same JieLi AC791N (WL82) chip runs the SMK-37 Pro / Elite keyboards.
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Generative ambient machine inspired by Music for Airports: starts playing at power-on with unsynced tape loops, a gliding bass and quiet Euclidean percussion.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Sampling groovebox on a Felucca base: 32 sample slots of 3 seconds, 8-track sequencer, slice and loop editor, recording through a computer or phone microphone.
by beashoko
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 1.1 | 2026-10-10 | Beta. Version and date from the fm1-editor.com/firmware hub; repository has no release tags (last commit 2026-10-10). |
Closed-source firmware that keeps M-VAVE's FM engine, fixes its bugs, and adds a virtual-analogue engine, an 8-bit engine, a Bitcrush effect, 64-step sequencer and per-screen knob banks.
by Baud Girl
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Telepathic Orchid-style chord instrument: one hand plays roots, the other shapes voicings, with key and performance modes, a bass line and a looper, on Felucca engines and the monome-grid ChoralRoot musical engine.
by Quixotic7
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Chord instrument for the FM-1, a fork of ChoralRoot FM-1 with its own chord keys, bass part, arpeggiator, looper, six effects, about 60 sounds and a pixel plant that grows from the chords you play.
by Danil Tokarev (FicusFicusov)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.1 | 2026-10-15 | First release. |
Turns the FM-1 into a MIDI master controller: 4 CC banks on the knobs, program change, scale keys with chords, arpeggiator and a 4-track Euclidean drum sequencer, plus General MIDI sounds of its own.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.9 | 2026-10-10 | USB-only build. |
Minimal base firmware to build your own on: update path, USB rescue, USB MIDI and audio, panel, screen and settings working and documented, with a sine wave on top.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Bi-timbral synth built on Felucca: two simultaneous sound parts with their own engines, patches, effects, EQ and arpeggiators, in LAYER, SPLIT or STEREO modes, with patch morphing and about 100 factory sounds.
by OSCILL/R
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.2.4 beta | 2026-10-12 | First firmware beta; earlier 0.1 beta was the emulator only. |
Draw-your-own-waveform synth: 8 voices, single-cycle waves A, B and a modulating C drawn on the device, morphing between them, a wave library, motion recording and an arpeggiator with a generative RIFF mode.
by SikkenWorks
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 1.20 RC | 2026-10-12 | Release tag is fm1-firmware. |
Felucca fork with a self-playing ambient machine (pad, bells and endless noise on a shared scale), an Omnichord-style chord mode and a neon ghost theme. Lives on branches of the Pelucco repository.
by Gadlele
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 1.0 | 2026-10-14 | Commit titled FANTASMA 1.0 on the fantasma-1.0 branch; no tags or releases. The branch has later commits, including an animated splash. |
Novelty sample instrument: eleven fart sounds across all 27 keys, a one-bar 16-step loop recorder, reverb and delay, with an animated cartoon on the screen.
by adamcharleswilsonmusic-code
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date |
|---|---|
| 1.0.0 | 2026-10-12 |
Open multi-engine synth platform: 13 engines, 4 tracks sharing 8 voices, 64-step sequencer, mod matrix, USB and TRS MIDI, USB audio. The base most other FM-1 firmwares fork.
by Leo Kuroshita (@kurogedelic), Hügelton Instruments
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Felucca fork with a hardware-style browser Studio that also plays without an FM-1, TRS MIDI input with full expression handling, selectable clock sources, 20 screen palettes and preset favourites.
by Chance Roth (ChanceTheMaker)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.9-salt14 | 2026-10-05 | Marked pre-release. Commits continued to 2026-10-12. |
Felucca 1.5.1 fork with eight selectable sequences per track, optional chaining of them into longer runs, and per-sequence song choices, at the cost of the user sample slots.
by echoe
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date |
|---|---|
| 1.5.1_and_sequences | 2026-10-12 |
Physically modelled kalimba / mbira: modelled tines and resonator bodies, thumb-roll chords on the black keys, mbira pattern generator, tape, grains, reverb and delay.
by J. Adam Sowers (jadamsowers)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.6.1 beta | 2026-10-13 | Marked pre-release. |
| 0.6.0 beta | 2026-10-08 | Marked pre-release. |
| 0.5.2 beta | 2026-10-08 | Marked pre-release. |
Port of Doom (one FreeDM arena map) to the FM-1: rendered on the colour screen, keys and knobs as controls, synthesised sound effects, no music.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.5 | 2026-10-07 | Version and date from the fm1-editor.com/firmware hub; repository has no release tags. |
Port of Doom's first level (E1M1) to the FM-1, with title screen, sound and music, on rp2040-doom and Felucca's hardware layer, installed from a browser page.
by Sean O'Hollaren (seanohollaren)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ bde8893 | 2026-10-13 | No tagged releases; this is the latest commit. |
Python script that patches your own copy of stock V15: operator detune matched to Dexed, aftertouch vibrato removed, scope colour changed. The patched file must not be shared.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main | 2026-09-28 | No tagged releases; date is the last commit. |
Binary patch for stock V15 that makes all 55 inputs (14 buttons, 27 keys, 7 knobs in both directions) send USB-MIDI notes, for use as a macro pad with a host-side translator.
by smememe
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date |
|---|---|
| 1.0.0 | 2026-10-12 |
Experimental NES emulator: the 27 keys are the controller and the screen is the TV. A worked example in a source-only kit for writing bare-metal FM-1 firmware; no music, no game included.
by Keitark
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Turns the FM-1 into a Commodore 64 SID synth with twelve instruments, a three-track step sequencer and stereo effects, and also plays C64 tunes by running their own 6502 code.
by Joakim Eriksson (joakimeriksson)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| master @ 687ce7d | 2026-10-13 | No tagged releases; this is the latest commit touching fm1-sid/. The emulator's firmware list labels the package 0.1. |
Roland Juno-106 emulation: a 6-voice polyphonic port of the KR-106 engine using both cores, with oscilloscope and parameters on screen, 4 banks, Juno-106 SysEx patch import and USB audio.
by PattF
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Eight-track groovebox inspired by the Ableton Move workflow, built on SLOOP 2.5: any mix of synth and drum tracks, clips and scenes, 240x240 UI, browser simulator and device manager.
by Nicodesy06
Brick risk. Flashing this carries a known, documented risk of damaging the device.
SLOOP as a pixel-art RPG sidescroller: tracks are party heroes, lit steps are attacks, tempo sets walking speed, scales set biomes, and recording a loop triggers a boss fight. SLOOP functions and controls are unchanged.
by hericdk
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Open C bootloader for the FM-1 and SMK-37 Pro/Elite, reconstructed from JieLi's generic one, with a recovery key that drops into USB download mode and a recovery menu.
by Julius Vitkauskas (jvitkauskas)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ 14b26f4 | 2026-10-13 | No tagged releases; this is the latest commit. |
Chord machine on Felucca: white keys play and strum the scale's chords like an Omnichord, black keys add sevenths, ninths, suspensions and borrowed chords, with a chord sequencer, drum loops, looper and ear trainer.
by math0ne
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Polyphonic 16-step sequencer and a bare-metal hardware abstraction layer for the FM-1 written in strict C99, zero-malloc, targeting the pi32v2 CPU. Published as source only.
by NOVALENTI
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Work-in-progress clip-launching performance firmware that turns the FM-1 into an Ableton-style clip launcher and matrix sequencer; forked from X0X.
by cmlarsen
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Synthwave synth-looper by Floydus: play a loop on the keys, layer another instrument over it, or step-program it, then chain loops into a song. Version 0.1 is SLOOP 2.5 under a new name, with a browser FM-1 and 8 tracks planned.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.1 | undated | F0-01: SLOOP 2.5 renamed; version from the README, no dated release. |
Omnichord-style chord harp: the 16 white keys strum, the 11 black keys pick the chord, with rhythm patterns, auto bass and effects.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Shigin accompaniment instrument forked from FoMni, inspired by Suikohsha's ST-50: koto, sho, shakuhachi, flute and taiko voices on a 6-op FM engine, in equal temperament or the ST-50's just tuning.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Dungeon-synth and dark-ambient groovebox on a Felucca 1.4.1 base: cathedral HALL reverb, worn-cassette TAPE effect, a hurdy-gurdy engine with buzzing trompette, drone latching, historical temperaments and dozens of dungeon sounds.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Felucca fork that replaces the engines with one microKORG-style analog-modelling synth: two oscillators, multimode filter, LFOs, patch routing, arpeggiator, step sequencer and effects, with live waveform drawings.
by Gadlele
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 1.0 | 2026-10-14 | Commit titled GOLANA 1.0 on the golana-1.0 branch, ahead of main; no releases. The v1.5.x tags in the repository belong to Felucca. |
Commercial 8-track groovebox ($29): FM and virtual-analogue engines, up to 20 voices, per-track loop lengths and effects, 64-step sequencer with parameter locks, sound packs.
by Peter Gombos
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Drum-machine firmware on Felucca: eight tracks of TR-808, TR-909 and Plaits drum models and samples, 64-step sequencer with motion recording, Mutable Instruments Grids, a ducking compressor, resonators and live effects.
by DEADACTIVE
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Felucca fork with an industrial, Brazilian-accented groovebox: twelve engines (6-op FM, superwave analogue, physical models, scanned synthesis), 4 tracks, mod matrix, ratchets, evolving drones, own drum kits.
by zednaked
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Bio-synthetic groovebox on Felucca 1.1.5.1 and SLOOP: six tracks, eight engines (analog, FM6, phase, bytebeat/floatbeat LOFI, voice, wheel, noise, bio-percussion), a bus slicer and a thermal-camera UI.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.6.70 | undated | Version from the README status line; no release tags, so no date. |
Always-on generative ambience machine for DJ intermissions: power on and a random in-key world plays across four parts (pulse, floor, haze, voice), with verb buttons and a taste memory of liked worlds.
by okumurari2
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.1 | 2026-10-11 | First release. |
Original 1990s-style groovebox: three melodic parts with LA- or 303-inspired engines (128 presets), a 16-lane synthesized drum part with eight kits, 64 patterns, song mode, effects and an arpeggiator.
by dspaudio
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ 5214cea | 2026-10-14 | No tagged releases; this is the latest commit. The README describes it as experimental 0.3.0. |
Felucca fork with a Sequential Prophet-5 engine (all 200 factory programs, SysEx), a Casio CZ-1 phase-distortion engine (64 factory tones), FM6 with DX7 SysEx banks, 70 microtonal tunings and a unified note editor.
by keremimo
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Fork of Melodee that adds algorithmic note generators to its four tracks (Turing, Euclid, Markov, Morph) with Evolve, Form and Tweak pages for mutating phrases and building song sections.
by Rastapopolix
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date |
|---|---|
| 1.1.0 | 2026-10-11 |
Display-test firmware and web app for sending arbitrary bitmap pictures to the FM-1 colour screen over WebMIDI.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date |
|---|---|
| 0.9 | 2026-10-10 |
Nord Modular-inspired modular synth engine for the FM-1 with a browser patch editor: build signal paths visually, upload patches over WebMIDI, plus a generative arpeggiator with Euclidean rhythms.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Forest, psytrance, goa and hi-tech themed firmware built on Felucca and SLOOP, with original drum assets, icons and four factory songs. Test release; a full physical listening and controls test is outstanding.
by megagott
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 1.0-test | 2026-10-14 | Test release; marked as a pre-release. |
Drone synth: two always-on drones with partner and sub oscillators, resonant filters, an LFO with two waves, a rhythmic swell, delay and reverb, 16 scenes and slow automatic drift.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.1-beta | 2026-10-14 | First public version; marked as a pre-release. |
OP-1-style eight-track groovebox on SLOOP: ACID and WAVE engines, circuit and Machinedrum-style kits, visual sequencer, live USB sampling, Ableton export from the browser and Android controller integration.
by catacombius
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.1 | undated | Version from the README status line; no release tags, so no date. |
Single-engine 8-voice analog-style polysynth with two oscillators per voice, a morphing 12/24 dB filter, chorus, delay, plate reverb, an arpeggiator and a two-track step sequencer.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Modular firmware platform derived from SLOOP, Felucca, Melodee and X0X: choose engines, kits, effects and sequencer features in a builder that shows the flash and RAM budget, then build your own image.
by w0ts
Brick risk. Flashing this carries a known, documented risk of damaging the device.
OP-1-inspired groovebox firmware based on SLOOP: synth, drum and mixer screens, per-track inserts, sample tools, an event tape for rearranging what the four tracks play, and its own engines beside a 6-op FM.
by dspaudio
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Felucca 1.5.1 derivative that turns the FM-1 into an audio-only performance sampler: two chopped song samples and a 16-pad drum kit, a 64-step sequencer, patterns and arrangement, with a browser emulator and sample tool.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ abb62aa | 2026-10-15 | No tagged releases; this is the latest commit. The project site offers a 0.1 beta candidate package, and the repository lists hardware checks for it as pending. |
Pocket arranger inspired by the Yamaha QY70: a style plays an eight-instrument band that follows the chords you play, with General MIDI sounds from Sonivox EAS and use as a GM sound module over MIDI.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Toddler instrument: any key plays a pentatonic FM note or a drum over a backing beat, with four animated animal friends on screen and no menus.
by Quixotic7
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.11 | 2026-10-10 | Marked pre-release; first public beta. |
Music toy for small children, built on Felucca: every key shows its note in its own colour, 40 animal friends each bring a picture, sound and beat, with a volume limiter. Holding HOME and SAVE opens the full Felucca synth.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Early Felucca 1.6.1 derivative that adds four reggae sounds (organ and bass), four-knob editing and an animated organ and sound-system home screen. Untested on hardware.
by Kemar Pennant (KemstheSage)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ b687e1a | 2026-10-15 | No tagged releases; this is the latest commit. |
Commodore 64 SID instrument for the FM-1 with its own SID emulation, a live-play mode and MIDI input, and a step sequencer and .sid playback planned. Tested in an emulator only.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ 394a872 | 2026-10-15 | No tagged releases; this is the latest commit. |
Six-track groovebox forked from Felucca: 14 synth and drum engines, 64-step sequencer with trig conditions and parameter locks, pattern pool and songs, performance layer, FM6 editing on the unit and a browser editor.
by illuminus5
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Live-performance groovebox built on Felucca: 4 tracks, 12 engines including 6-op FM with DX7 import, drum machine, 27 punch-in effects, user samples, song mode, USB audio, web editor.
by isod89
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Experimental SLOOP fork adding engines of its own: a 6-op DX7 with voice import, virtual analogue, additive, pluck and Karplus-Strong strings, each editable on the device, with a web editor. Notes are in Chinese.
by shaw-core
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| ALG05 | 2026-10-07 | Test build. Version and date from the fm1-editor.com/firmware hub; repository has no release tags. |
Test builds of SLOOP with a DX7 voice engine holding twelve voice banks in flash, loaded from a web editor or sent from Dexed, plus a key-velocity setting and latching punch-in effects.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| v2.5-b28-test | 2026-10-09 | Pre-release. DX7 voices play as the patch is, with no level trim. |
| v2.5-b27-test | 2026-10-09 | Pre-release. Adds a KEY VELOCITY setting and plays picked DX7 voices dry. |
| v2.5-b26-test | 2026-10-09 | Pre-release. |
SLOOP fork that adds a 4-operator FM engine with per-operator envelopes, a seven-page editor and an on-screen envelope and voice display.
by renebohne
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 2.4 | 2026-10-06 | |
| 2.2-visual-fm | 2026-10-05 | Adds the visual FM editor and an option to light the keys of notes that sound. |
SLOOP's live workflow around a 6-operator DX7 engine ported from Dexed's msfa, with a resonant filter, 256 SysEx voices, on-device voice editing, programmable FM drums and patterns up to 128 steps.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Dark performance synth and four-track groovebox with 64 curated sounds, six-operator FM, metallic distortion, synthesized drum kits and pads, a reactive purple-and-green display, and 64-step tracks with four pattern banks.
by TerkWerX
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.22.0-dev | 2026-10-13 | Development preview; marked as a pre-release. |
Non-groovebox firmware for electroacoustic and live ambient playing: six layers with FM, ANIMA and CALIGULA engines, a free looper per layer, latched drones, granulator, crusher and reverb. No tempo or step sequencer.
by Nuno Zimas
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ 8e7463d | 2026-10-14 | No tagged releases; this is the latest commit. The changelog lists 0.23 as the newest version. |
X0X fork with ten tracks where any engine plays on any track: two kicks, 909 and 808 drum voices and a 303, sixteen clips per track, scatter effects and two master effects.
by apiel
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.1 beta | undated | First public version. The release notes carry no date; no GitHub release or tag. |
Psychedelic synth where every page is a full-screen animated picture driven by its four knobs: sitar, pad, organ and FM bell voices, spiral echo, shimmer reverb, vowel filter, scale lock, arpeggiator and sequencer.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| 0.2 | 2026-10-14 | Git tag; no GitHub release page. |
Experiment that reads key velocity and aftertouch from the FM-1's rubber-dome keys with no hardware changes, by sampling two key rows with the chip's ADC; a small FM voice and USB MIDI output show the result.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ 8f62ce0 | 2026-10-14 | No tagged releases; this is the latest commit. |
Felucca controlled from an Arturia MiniLab 3: four track faders, knobs that follow the track, preset and engine browsing, a master DJ filter, momentary effect pads, session resume.
by ELI7VH
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date |
|---|---|
| 1.0.5.2-midi23 | 2026-10-09 |
| 1.0.5.2-midi22 | 2026-10-09 |
SLOOP 2.6 fork that restyles the FM-1 interface as a Winamp 2.x window, with the sound list as a playlist, a tape-deck loop recorder, effect sliders and 28 full-screen visualizers.
by hericdk
Brick risk. Flashing this carries a known, documented risk of damaging the device.
ReBirth-style groovebox: TR-909, TR-808, two TB-303s with an acid line generator and a breakbeat player playing together, with song mode, shared reverb and tape delay, master compressor.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
12-bit sampling drum machine in the spirit of the SP-1200: 32 pads at 26 kHz without interpolation, 8 filtered channels on the knobs, loops on the black keys, songs, swing and punch-in FX.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Performance and recording interface firmware built on Melodee: four tracks with scoped pattern actions, drum ratchets, automation graphs, shared delay and reverb, Galaxy and Dark Matter themes. Development preview only.
Six-track live groovebox written from scratch in C99: TR-style drum machine, 8-slice sampler, wavetable bass and three assignable synth/kit/MIDI tracks, with polymeter, p-locks and crash-resilient flash saves.
by Erbubar23
| Version | Date | Notes |
|---|---|---|
| 0.5.0-beta | 2026-10-12 | Marked pre-release; no firmware attached. |
Experimental Sharp X68000 MDX/PDX song player using a software YM2151 emulation, with part muting and live keyboard accompaniment. Tested on a computer, not yet installed on an FM-1.
by Keitark
Open firmware project with engines derived from Mutable Instruments modules, a Movy-style sequencer and a playable browser simulator. Has not yet run on an FM-1.
by ip2k
Four-track tracker firmware with SID, FM, sampler and 303-style engines, edited from a browser page over USB. The firmware is not published; only the web editor is.
Curated directory of FM-1 custom firmwares, tools and docs, with REVERSE_ENGINEERING.md and a Python flasher/extractor (fm1_flasher.py) for exploring the SysEx update protocol.
by aroum
| Version | Date | Notes |
|---|---|---|
| main | 2026-10-12 | No tagged releases; date is the last commit. |
Python scripts for Windows that drive Felucca 1.5 over its SysEx editor protocol: write four-track arrangements, manage project slots and song chains, and read or set parameters from the command line.
by Hunter Xiong (hunterxiong2026)
Emulates the FM-1's CPU, screen, keys, knobs and audio so community firmwares run unchanged in a browser or in a native window; also ships a SID-chip firmware of its own.
by Joakim Eriksson (joakimeriksson)
| Version | Date | Notes |
|---|---|---|
| master @ e52f464 | 2026-10-13 | No tagged releases; this is the latest commit. |
Android app that runs community FM-1 firmware engines (SLOOP, FM1 MOVE, Felucca, sloopDX, Ghoulbox, zp12) on a phone or tablet with a touch panel, piano roll and sound editors.
by thingsapart
Firmware for a Seeed XIAO RP2040 wired to the FM-1's USB lines that forces the chip into its ROM download mode, then reads and writes the flash from a Mac, so it can recover a unit that no longer boots.
by Leo Kuroshita (@kurogedelic)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main @ a632d92 | 2026-10-01 | No tagged releases; this is the latest commit. |
Reverse-engineering repository for the FM-1: architecture, boot chain, OTA protocol analysis, decompiled M-UPGRADE, Ghidra setup and a Linux USB-MIDI OTA client (fm1_ota.py).
by AL-255
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date | Notes |
|---|---|---|
| main | 2026-09-08 | No tagged releases; date is the last commit. |
Browser-based DX7-style voice editor and patch librarian for the FM-1: every voice parameter and the FM-1 effects chain, bank import and export over SysEx, bundled DX7 bank catalog. Also hosts the fm1-editor.com firmware directory.
| Version | Date | Notes |
|---|---|---|
| main | 2026-10-12 | No tagged releases; date is the last push. |
Windows and Linux app that backs up, restores and installs FM-1 and SMK-37 Pro/Elite firmware through the chip's USB download mode, so it also works on a unit whose firmware is broken.
by Julius Vitkauskas (jvitkauskas)
Brick risk. Flashing this carries a known, documented risk of damaging the device.
Windows app that lists community FM-1 firmware, checks downloads against published hashes and installs them through Felucca's own installer, with a stock-first rule and a USB recovery guide.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
| Version | Date |
|---|---|
| 1.0 | 2026-10-14 |
Standalone app and VST3/AU/LV2 plugin that plays the FM-1's FM engine and syncs presets and patterns both ways with an FM-1 running FM-1+VA, Felucca, SLOOP or Melodee.
by Jacob Schooley (jbschooley)