Written from devices/monome/norns.vendor.fw-midarto-09f1de5.jsonEdit on GitHub JSON

Monome norns (script midarto): OSC control from Claude, scripts and controllers

20 named commands to drive Monome norns over OSC — from Claude (MCP), live-coding environments or a MIDI controller.

sourcemaker's documentation
firmwaremidarto-09f1de5
real unitnot yet checked

Not checked on a real Monome norns yet. Own one? Load a sound or send a control, and tell us whether it worked.

Maker: Monome
Version: script midarto (mrglennjones/midarto @ 09f1de5)
Source: maker's documentation
OSC prefix: /norns_midarto

README.mdfrom the author's repository; not claimed yet, anyone can improve itEdit

From the README of mrglennjones/midarto at 09f1de5, licence MIT.

Midarto

A two-deck MIDI file DJ for monome norns. Load .mid files into deck A and deck B, mix them with a crossfader and play them out to a MIDI sound module (such as a General MIDI module) or to nb voices. It works on the norns alone, and a 16×8 grid adds cues, loops, mutes, sync and transport keys.

Version 2.15.

Install

From maiden (once the repo is public): in the maiden REPL, type ;install https://github.com/mrglennjones/midarto.

By copying:

Unzip midarto.zip. You get a folder called midarto containing midarto.lua, lib/, demo/ and this README.
Copy the whole midarto folder into dust/code/ on your norns. Any of these works:
From a computer on the same network, open the norns file share (smb://norns.local on macOS or \\norns.local on Windows, user we, password sleep unless you changed it). Drop the folder into dust/code/.
Or from a terminal: scp -r midarto we@norns.local:~/dust/code/
On the norns, go to SELECT and choose MIDARTO. A 5-second splash screen shows an 8-bit DJ at the decks next to the title, then the credits, while "MIDARTO" scrolls across the grid; press any key or knob, or any grid key, to skip it.

The first time it runs, Midarto creates a songs folder, dust/data/midarto/songs/, and puts two demo songs in it (acid_trk.mid at 120 BPM and breaks.mid at 98.5 BPM), so you can try it straight away.

Your own files

Fill the songs folder, dust/data/midarto/songs/, with your own .mid or .midi files. Subfolders are fine, for example one per set or genre. The browser always opens in the songs folder, and you can go up to browse anywhere in dust. You can delete the demo songs once you've added your own; if the folder is ever empty, Midarto puts them back.

Upgrading from v2.4 or earlier: songs you kept directly in dust/data/midarto/ are moved into the songs folder the first time v2.5 runs.

Optional: nb voices

To play a deck through nb voices instead of MIDI, install the nb library (dust/code/nb) plus any nb voice mods you want, then restart Midarto. An "nb voice" output option and a voice selector then appear in each deck's parameters. If nb isn't installed, Midarto simply offers MIDI output only.

Read the whole README on GitHub

Use it

Start the bridge with this driver; it forwards named OSC commands to the software:

osc-bridge run --device devices/monome/norns.vendor.fw-midarto-09f1de5.json

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /norns_midarto/param/{id}

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

MIDI controls

20 controls, each with its number, its range and the name to send

OSC commands

Command	Arguments	Name to send
Param	id: string, value: float	`/norns_midarto/param/{id}`
Param {set} {id}	set: string, id: string, value: float	`/norns_midarto/param/{set}/{id}`
Remote key	n: int, z: int	`/norns_midarto/remote/key`
Remote enc	n: int, delta: int	`/norns_midarto/remote/enc`
Remote brd	code: int, z: int	`/norns_midarto/remote/brd`
Param midarto outputs	value: int	`/norns_midarto/param/midarto_outputs`
Param midarto xfcurve	value: int	`/norns_midarto/param/midarto_xfcurve`
Param midarto firstcue	value: int	`/norns_midarto/param/midarto_firstcue`
Param midarto barstart	value: int	`/norns_midarto/param/midarto_barstart`
Param midarto quantize	value: int	`/norns_midarto/param/midarto_quantize`
Param midarto view	value: int	`/norns_midarto/param/midarto_view`
Param midarto zoom	value: int	`/norns_midarto/param/midarto_zoom`
Param midarto frametime	value: int	`/norns_midarto/param/midarto_frametime`
Param midarto awake	value: int	`/norns_midarto/param/midarto_awake`
Param midarto settings ver	value: int	`/norns_midarto/param/midarto_settings_ver`
Param midarto clearcache		`/norns_midarto/param/midarto_clearcache`
Param midarto sens	value: int	`/norns_midarto/param/midarto_sens`
Param midarto warn	value: int	`/norns_midarto/param/midarto_warn`
Param midarto clock	value: int	`/norns_midarto/param/midarto_clock`
Param midarto panic		`/norns_midarto/param/midarto_panic`

JSON

The same MIDI as norns.vendor.fw-2.9.4, which this firmware shares.

Limitations

Source: the Lua source of the norns script midarto by mrglennjones (mrglennjones/midarto at 09f1de5), listed in norns.community. Shares the norns system OSC of monome/norns.vendor.fw-2.9.4 (port 10111, /param, /remote): give the norns' IP address as host override. Its own routes are the 15 parameter(s) whose id is written out in its source, read without running it, with range, options and default when written out too; set them while the script runs on the norns. 4 parameter call(s) could not be read without running the script (ids built at run time, values from variables) and are not mapped: reach them with the base driver's /param/{id}. Parameters added by libraries or engines outside the repository are not mapped either. A value goes in the parameter's units (an option's index from 1). MIDI is not mapped: the script's MIDI handling is its own and parameter MIDI mappings are learned by each user (PMAP). Untested on hardware.

Other versions

The Monome norns is mapped in 356 versions. per Electra preset, per Electra preset, per Electra preset, norns system OSC, v2.9.4, script 32-harmony, script 3d, script 4-big-knobs, script 4CCFader, script abacus, script acid-test, script ack, script acrostic, script amen, script amenbreak, script animator, script arcify, script arcologies, script arp_index, script ash, script ashsynth, script asterion, script automs70, script avonlea, script awake, script awake-ashsynth, script awake-passersby, script awake-rings, script _awed, script b-b-b-b-beat, script bakeneko, script barcode, script barycenter, script beacon, script beets, script benjolis, script bistro, script bitebeet, script bitters, script bline, script blippoo, script blndr, script bloom, script blue, script boingg, script bounds, script bowering, script breakthrough, script buoys, script caliper, script carter's delay, script cc-canvas, script cccccccc, script changes, script cheat_codes_2, script choukanzu, script circles, script clarck, script clcks, script clipper, script clockabout, script colorwheel, script combiner, script combos, script compass, script concrete, script constellations, script corners, script cranes, script crow_talk, script cryptkeeper, script cybermidi, script cyrene, script d, script delar, script delayyyyyyyy, script delinquencer, script demoncore, script descartes, script dimension-expander, script downtown, script dreamsequence, script drift, script dronecaster, script drum_room, script duatone, script dunes, script Eastwind, script easygrain, script eels, script ekombi, script endless-stairs, script esper, script eterna, script euclidigons, script faeng, script fall, fates 2.9.3, script fiahod, script fibonacci, script fixed-filter-banking-crisis, script flora, script fm7, script folio, script footfoot, script forge, script foulplay, script foundry, script fugarc, script fugu, script gematria, script gemini, script get in the sea!, script giro, script glaciers, script glitchlets, script glitchlooper, script glut, script goldeneye, script grains, script graintopia, script granchild, script grd, script grendy, script greyhole, script grid-test, script gridofpoints, script gridofrings, script gridstep, script groovecats, script grurder, script hachi, script hands, script haven, script haze, script here-there, script hid_demo, script Hiswing, script hpns, script hs010, script icarus, script iiitoii, script impact, script ingenue, script initenere, script internorns, script interpret, script intervaltrainer, script islands, script isoseq, script jala, script jiffy, script just-play, script justharmonicon, script KoiBoi2, script kolor, script kreislauf, script kria_midi, script krill, script l_ll__l_, script lamellae, script lamination, script larc, script lemniscate, script leslie, script less-concepts, script lissadron, script loom, script lorenz, script lorenzos-drums, script loudnumbers_norns, script luck, script m18s, script magnetar, script magpie, script makebreakbeat, script mangl, script manifold, script marcovaldo, script massif, script MDPatch, script MDScaler, script meadowphysics, script metrix, script metronome, script midi-monitor, script midi-review, script midididi, script midigrid, script midiplayer, script mlr, script mlre, script Mnmpatch, script molly_the_poly, script moln, script monitor, script monomaniac, script moonraker, script mosaic, script mouse, script mx.samples, script mx.synths, script n.kria, script nørgård, script n16o, script nameless-nightmare, script narf, script nb_drumcrow, script nb_mxsynths, script nb_plyprc, script nb_smpKit, script nc01-drone, script nc02-rs, script nc03-ds, script ndls, script nice-tapes, script nisp, script nmMelodyMagic, script nmQuadroDubber, script nmRain, script nmSmartyPants, script noize, script noizeop, script norman, script norns.online, script nornsfetch, script nydl, script o-o-o, script oblique, script oilcan, script onehanded, script ong, script oooooo, script orbital, script orca, script orgn, script orgnwrms, script ortf, script otis, script overtones, script overwintering, script p8, script paracosms, script paranibbles, script parrot, script passersby, script passthrough, script patchwork, script path-trace, script pedalboard, script phonotype, script phyllis, script pirate-radio, script pit-orchisstra, script pitfalls, script pitter-patter, script piwip, script pixels, script plasma, script plonky, script pools, script ppm_norns, script punchcard, script qfwfq, script quence, script r, script rachim, script raft, script raindrops, script randomizer_typhon, script rangl, script rebound, script reels, script repeater, script repl-looper, script ribbons, script rpls, script rpmate, script rudiments, script sam, script sampswap, script samsara, script samthree, script sath-lemon, script schicksalslied, script scholastic, script scryingstone, script seaflex, script seeker_ii, script sempra, script serialism, script shapes, script shfts, script shnthsalslied, script showers, script sidvagn, script silos, script sines, script skylines, script smash, script sonde, script spirals, script splicer, script splnkr, script stack, script step, script stjörnuíþrótt, script streams, script strides, script strum, script stwnsh, script SuperBrain, script supertonic, script sway, script sweet bees, script synthy, script takt, script tambla, script tapedeck, script taweeet, script tetra, script tetrabobo, script tetrabotis, script thebangs, script thirtythree, script thorns, script Tidbit, script timber, script time-rhythm, script timeparty, script tmi, script torii, script traffic, script triangles, script tulpamancer, script tuner, script tunnels, script turntable, script tviburar, script twine, script twins, script u, script ufo, script uhf, script vcr, script vinker, script warmreload, script waver, script window-crowparator, script wobblewobble, script wrms, script xD1, script Ygg, script yggdrasil, script zellen, script zxcvbn.

Frequently asked questions

Can an AI agent like Claude control the Monome norns?

Yes: SynthHub's hosted MCP server knows the Monome norns's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.