Monome norns - graintopia MIDI CC chart, NRPN and OSC map¶
The Monome norns - graintopia MIDI implementation: 30 CC, each named, for Claude (MCP), SuperCollider or any OSC app.
| Device | Monome norns - graintopia |
|---|---|
| Vendor | Monome |
| OSC prefix | /norns_graintopia |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/monome/norns_graintopia.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.
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/monome/norns_graintopia.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as norns_graintopia: ask “what can the Monome norns - graintopia do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (30)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/norns_graintopia/list |
1 | 0–127 | continuous | ||
/norns_graintopia/db |
3 | -96–16 | continuous | ||
/norns_graintopia/boundary_start |
6 | 0–127 | continuous | ||
/norns_graintopia/boundary_start |
0 | 0–127 | continuous | ||
/norns_graintopia/move_duration |
8 | 0–100 | continuous | ||
/norns_graintopia/temperature |
10 | 0–127 | continuous | ||
/norns_graintopia/grains |
4 | 0–6 | continuous | ||
/norns_graintopia/reverb |
5 | 0–20 | continuous | ||
/norns_graintopia/boundary_width |
7 | 0–127 | continuous | ||
/norns_graintopia/timescale |
9 | 0–100 | continuous | ||
/norns_graintopia/tuning |
13 | 0–127 | continuous | ||
/norns_graintopia/slew_rate |
14 | 0–100 | continuous | ||
/norns_graintopia/freeze |
11 | 0–127 | continuous | ||
/norns_graintopia/rec |
12 | 0–127 | continuous | ||
/norns_graintopia/rand_weight |
15 | 0–100 | continuous | ||
/norns_graintopia/rand_weight |
18 | 0–100 | continuous | ||
/norns_graintopia/rand_weight |
21 | 0–100 | continuous | ||
/norns_graintopia/rand_weight |
24 | 0–100 | continuous | ||
/norns_graintopia/rand_weight |
27 | 0–100 | continuous | ||
/norns_graintopia/rand_tuning |
16 | -48–48 | continuous | ||
/norns_graintopia/rand_tuning |
19 | -48–48 | continuous | ||
/norns_graintopia/rand_tuning |
22 | -48–48 | continuous | ||
/norns_graintopia/rand_tuning |
25 | -48–48 | continuous | ||
/norns_graintopia/rand_tuning |
28 | -48–48 | continuous | ||
/norns_graintopia/rand_volume |
17 | 0–127 | continuous | ||
/norns_graintopia/rand_volume |
20 | 0–127 | continuous | ||
/norns_graintopia/rand_volume |
23 | 0–127 | continuous | ||
/norns_graintopia/rand_volume |
26 | 0–127 | continuous | ||
/norns_graintopia/rand_volume |
29 | 0–127 | continuous | ||
/norns_graintopia/clear_land |
2 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /norns_graintopia/note/on <note> <velocity>, /norns_graintopia/cc/<number> <value>, /norns_graintopia/pitchbend <0-16383>, /norns_graintopia/program_change <n>.
Limitations¶
Imported from an Electra One community preset. The mapping reflects the preset author's editorial choices: parameter naming, ranges, and which params are exposed. Untested on hardware in this repo.
Frequently asked questions¶
How many parameters of the Monome norns - graintopia can be controlled over MIDI?
SynthHub's map of the Monome norns - graintopia lists 30 MIDI CC parameters, each with its number, range and a readable name; the full chart is on this page.
Can an AI agent like Claude control the Monome norns - graintopia?
Yes: SynthHub's hosted MCP server knows the Monome norns - graintopia's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.