AMARU OS

Hard-tekno generative firmware for the M-VAVE FM-1. Four-track song generator, Bunker HOME identity, and a USB installer that never touches the boot block.

AMARU OS turns your FM-1 into a live hard-tekno groove box. It is a deterministic, seed-driven four-track generative engine — pick a genre, dial a SEED, and the GEN page renders a complete 64-step song across AIR (pad/chorus), MELODY (lead), ROOT (bass), and SPARK (drums). Same seed, same settings, same song, every time.

Built on Bunker Evolved 1.0. Licensed GPL-3.0-only.

Play in the browser → | Install to FM-1 → | Song editor → | Verify package →

The sound package

Drums (SPARK track) — thirteen kits spanning hard and classic electronic percussion:

TEKNO — dry, percussive, brutal: hard kick, cracking snare, tight clap, metallic hats, dry tom, hard rim, short bell
GABBER — heavy saturated kick, cracking noisy snare, metal hats
HARDTEKK / HITECH — short driven kick, cluster hats
DEEP / TIGHT / PERC — model-kit percussion from the Felucca pieces
80 / 10 / 66 / 55 / 77 — the classic box kits
PSY / FOREST — AMARU-appended model kits

808 presets — 808 BASS BOOM, 808 BASS DIRTY, 808 BASS SLIDE.

Synthesis engines (four active): ANALOG, DIGITAL (FM4-style), FM6, and DRUM. Retired engines stay compiled out so the render loops stay tight.

Genres — tribe tekno, mental tekno, hardtekk, acidcore, jungle, drum & bass, breakbeat tekno, techno, psytrance. DnB and breakbeats are not four-on-the-floor.

32 hard-tekno worlds — curated at the GEN recipe layer, replacing the 112 ambient worlds.

GEN page — one seed, one song

Knob	Role
GENRE	tribe / mental / hardtekk / acid core / jungle / drum&bass / breakbeat / techno / psytrance
SEED	any number 0–9999 — a stable, repeatable song
ENERGY	0–100 — full adds extra hats and ghosts, empty strips them back
FORM	`LOOP` (1 bar) / `PARTS` (2 bars) / `SONG` (4 bars)

OCT+ advances the seed and plays a new take. OCT- resets to the base value. PLAY runs or stops the sequencer. REC records a take.

The track sound name shows the recipe's source at a glance: MYC PUNCHY, MYC BLOWN, GREEN KIT, TEKNO KIT, HYPOGEUM CHANT, ORACLE CHOIR, SILBURY WAIL, and more.

Installing (at your own risk)

Coming from another custom firmware (Felucca, Baud Girl, or any other)? Return to official V15 first, then install AMARU. Writing straight over another custom firmware has bricked an FM-1.
Open install.html in Chrome or Edge, with the FM-1 connected directly by a data USB cable. Close other MIDI apps.
Press Install, allow MIDI (SysEx), and wait for Done (about a minute). The status stays armed the whole write and disarms only at Done.
Do not unplug while writing. If interrupted, replug and press Install again — it resumes from the start.

The installer checks the FM-1 first and writes only over official V15 or AMARU. It offers the approved version only: every change is checked in the emulator first, and only then reaches the installer.

Offline: python3 tools/fm1_install.py build/felucca.fwsc.

Recovery: hold OCT− while switching the FM-1 on — the device enters update mode and listens for rescue. See docs/RESCUE.md and docs/SAFETY.md. AMARU must never disable this handler.

Changelog

0.4

TEKNO drum kit and TEKNO KIT preset added
Monochrome Bunker HOME rework — canary accents in the bottom corners, splash untouched
32 hard-tekno worlds (replacing 112 ambient), curated at the GEN recipe layer
808 presets renamed 808 BASS BOOM / DIRTY / SLIDE
Flash-fit verified; CPU budget clean; brick-safety gates re-verified (ota_test, ldr_test)
Song editor librarian verified on FM-1 hardware: backup export/restore round-trip (BACKUP_LIST/GET/PUT)
Generated drum patterns rebalanced: hats/rims/bells thinned, kick/snare/tom weight kept (four-on-floor genres)

Earlier

Built on Bunker Evolved 1.0; genre concept from JIANT; timbral shapes from Carnac OS / Mycelium FM-1 (numbers only)

About

AMARU OS is an alternative firmware for the M-VAVE FM-1, made for playing live and building whole songs without a computer.

Emulator: https://marcocasanova00.github.io/amaru-os/
Installer: https://marcocasanova00.github.io/amaru-os/install.html
Editor: https://marcocasanova00.github.io/amaru-os/editor/
Verifier: https://marcocasanova00.github.io/amaru-os/verify.html
Flash safety: docs/SAFETY.md
Rescue: docs/RESCUE.md
Releases: https://github.com/MarcoCasanova00/amaru-os/releases

AMARU OS is an independent community firmware. It is not affiliated with or endorsed by M-VAVE, Bunker Evolved, JIANT, Carnac OS, or Mycelium FM-1. Installing custom firmware is at the user's risk; keep the stock image and a verified recovery path.

See docs/ATTRIBUTION.md and LICENSE for full attribution.