M-VAVE FM-1: MIDI CC, NRPN and OSC map¶

The M-VAVE FM-1 as named OSC addresses — 2 SysEx commands — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.

Device	M-VAVE FM-1
Vendor	M-VAVE
OSC prefix	`/fm1`
Source	📘 From the manufacturer's documentation
Firmware	grimm-1.0
Revision	GR!MM 1.0 (alternative firmware by GRiMMBIENT)
Upstream	vendor-doc
Driver file	`devices/m-vave/fm-1.vendor.fw-grimm-1.0.json`

Not tested on the device yet

This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.

Other variants of this device: fm-1.vendor.fw-15, fm-1.vendor.fw-16, fm-1.vendor.fw-386dx-1.0.2, fm-1.vendor.fw-amb-1.3, fm-1.vendor.fw-beetle-1.4.25, fm-1.vendor.fw-bunker-1.0.0, fm-1.vendor.fw-bytemania-1.2.0, fm-1.vendor.fw-carnac-0.9.3, fm-1.vendor.fw-chipbox-1.2.4, fm-1.vendor.fw-choralroot-0.26.1, fm-1.vendor.fw-chord-0.3, fm-1.vendor.fw-clipper-1.1-experimental, fm-1.vendor.fw-coralflower-0.5, fm-1.vendor.fw-cs1-2026.10.22, fm-1.vendor.fw-ctl-1.0, fm-1.vendor.fw-cutador-1.2.1, fm-1.vendor.fw-dinghy-0.4, fm-1.vendor.fw-drift-0.8, fm-1.vendor.fw-dub-1.3.0, fm-1.vendor.fw-duell-1.0, fm-1.vendor.fw-emb-1.5.2, fm-1.vendor.fw-etch-1.61, fm-1.vendor.fw-fart-1.1.0, fm-1.vendor.fw-felucca-1.6.1, fm-1.vendor.fw-felucca-salt-0.9-salt14, fm-1.vendor.fw-felucca8-1.6.1-and-sequences, fm-1.vendor.fw-fimba-0.6.1, fm-1.vendor.fw-flyfish-1.0.1-4e5efb8, fm-1.vendor.fw-fm106-beta4, fm-1.vendor.fw-fm1gm-1.0.2, fm-1.vendor.fw-fmel-1.0, fm-1.vendor.fw-fmini-1.8.0, fm-1.vendor.fw-fomajam-0.1.6, fm-1.vendor.fw-fomni-0.4, fm-1.vendor.fw-frasil-1.0, fm-1.vendor.fw-frodhes-0.9.4, fm-1.vendor.fw-fumi-1.1.0, fm-1.vendor.fw-gammawave-1.0-gw, fm-1.vendor.fw-ghoulbox-2.3.2, fm-1.vendor.fw-golana-1.2, fm-1.vendor.fw-golanadz-0.1.0-beta, fm-1.vendor.fw-hera-1.1, fm-1.vendor.fw-hortator-0.23.3, fm-1.vendor.fw-hyp1-1.5.54, fm-1.vendor.fw-jangada-1.0.1, fm-1.vendor.fw-jiant-0.9.9-beta4a-813869d, fm-1.vendor.fw-kawa-0.5, fm-1.vendor.fw-ketch-0.1-beta, fm-1.vendor.fw-loom-0.7, fm-1.vendor.fw-maku-1.0, fm-1.vendor.fw-mc1-1.2.0, fm-1.vendor.fw-melodee-1.4.5, fm-1.vendor.fw-min1-0.2.1, fm-1.vendor.fw-minitone-1.0.2, fm-1.vendor.fw-modelar-0.3, fm-1.vendor.fw-monk-0.9.1, fm-1.vendor.fw-morpheus-1.0.0, fm-1.vendor.fw-mutable-1.0, fm-1.vendor.fw-mycelium-1.0-test, fm-1.vendor.fw-niagara-0.2, fm-1.vendor.fw-nmsfm-0.5, fm-1.vendor.fw-noizdemons-666, fm-1.vendor.fw-obervave-3.0.1, fm-1.vendor.fw-open-14, fm-1.vendor.fw-opn1-2.0.0, fm-1.vendor.fw-orbit-0.7.1, fm-1.vendor.fw-pigeon-0.5.0-beta.1, fm-1.vendor.fw-polly-0.5, fm-1.vendor.fw-purplemonkey-0.11, fm-1.vendor.fw-quest-38, fm-1.vendor.fw-rainbow-1.1.5-rb, fm-1.vendor.fw-shineon-3.0.1, fm-1.vendor.fw-sid-0.1, fm-1.vendor.fw-sid1-1.0.0, fm-1.vendor.fw-sidou-0.3.1, fm-1.vendor.fw-skiff-1.4, fm-1.vendor.fw-sloop-2.8.1, fm-1.vendor.fw-sloop-alg-alg05-test, fm-1.vendor.fw-sloop-banks-2.5-b28-test, fm-1.vendor.fw-sloop-floyd-2.4, fm-1.vendor.fw-sloopdx-4.0, fm-1.vendor.fw-tessera-2.0.1, fm-1.vendor.fw-tonitor-2026.10.23, fm-1.vendor.fw-tribe-0.3-beta, fm-1.vendor.fw-tuna-1.0-fbc56d3, fm-1.vendor.fw-unholy-0.2.3, fm-1.vendor.fw-vector37-0.3.2, fm-1.vendor.fw-waveloop-1.0.5.2-midi23, fm-1.vendor.fw-winampfm-0.12, fm-1.vendor.fw-x0x-1.1.0, fm-1.vendor.fw-x0xrmx-1.1.0, fm-1.vendor.fw-zen-1.2, fm-1.vendor.fw-zp12-2.5.

How do you control it?¶

Find the MIDI ports, then start the bridge with this driver:

osc-bridge detect        # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/m-vave/fm-1.vendor.fw-grimm-1.0.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /fm1/system/info

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as fm1: ask “what can the M-VAVE FM-1 do?” and it reads this map with list_routes. See the MCP guide.

SysEx commands (2)¶

OSC address	Arguments
`/fm1/system/info`
`/fm1/system/identify`

Performance MIDI¶

Notes, pitch bend and any CC are also available: /fm1/note/on <note> <velocity>, /fm1/cc/<number> <value>, /fm1/pitchbend <0-16383>, /fm1/program_change <n>.

Limitations¶

GR!MM 1.0 by GRiMMBIENT (GPL-3.0), a groovebox firmware for the FM-1. no fixed CC map: any CC on any channel only through MIDI learn (SYSTEM 2 > MIDI LEARN, up to 32 CC->knob links, value scaled (v*max+63)/127 over the knob range; grimm.c:1097-1154); no TRS MIDI IN (FELUCCA_UART 0); no program change, bend, clock; note velocity not passed to the voices (nq_note has none). Channels: MIDI CHANNEL: 1-4 -> T1-T4 (default), up to 13-16 (base channel N.N+3 = tracks 1-4); ALL > SEL: every channel plays the selected track. Notes only; CCs any channel. USB only. Pitch bend: none (ignored). Aftertouch: none. Clock: none: clock/start/stop ignored, internal tempo only. MIDI out: USB: the selected track's key notes (velocity 100) on its track channel; with SEQ MIDI OUT the sequencer's and arp's notes per track channel; echoes of its own notes ignored on input. NRPN: none. SysEx `F0 pack7(00 59 cmd len24 body chk) F7`: M-UPGRADE vendor update protocol (installers, hub): cmd 0x11 handshake answers the package identity; F0 22 24 35 7F F7 starts the pulled update. SysEx `F0 22 24 35 7D F7`: soft key: reboot into the bootloader. SysEx `F0 7D 47 52`: GR!MM editor protocol v2 ('GR'): 11-16 sample upload/erase/info/factory, 20 INFO (proto, format, version string, sizes), 21 GET, 22 PUT (BEGIN/DATA/COMMIT/ABORT), 23 TRACK live sound; pack7 7-bit. SysEx `F0 7D 46 4C`: absent: no Felucca editor protocol, no INFO reply. SysEx `F0 43`: absent: no raw DX7 SysEx parser. Identity: vendor identify FM-1_966 (tools/build.py:51, every 1.x release), rescue FM-1_000; editor INFO (F0 7D 47 52 14) returns version "1.0"; USB product "Felucca" (usb.c:274), manufacturer "Hügelton Instruments". It reads no CC.

Try it in your browser

Play a virtual FM-1 with any of its community firmwares: M-VAVE FM-1.