Meris Polymoon: MIDI CC, NRPN and OSC map¶
The Meris Polymoon as named OSC addresses — 20 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Meris Polymoon |
|---|---|
| Vendor | Meris |
| OSC prefix | /polymoon |
| Source | 📦 Derived from MIDI Guide (community CC/NRPN data) |
| Firmware | unknown |
| Revision | per pencilresearch canonical CSV |
| Upstream | pencilresearch |
| Data licence | CC-BY-SA-4.0 — MIDI Guide (https://midi.guide) by Pencil Research and contributors |
| Driver file | devices/meris/polymoon.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/meris/polymoon.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 polymoon: ask “what can the Meris Polymoon do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (20)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/polymoon/expression_pedal |
4 | 0–127 | continuous | ||
/polymoon/dotted8th |
9 | 0–127 | continuous | ||
/polymoon/bypass |
14 | 0–127 | continuous | ||
/polymoon/tempo10ms_intervals |
15 | 0–127 | continuous | ||
/polymoon/time |
16 | 0–127 | continuous | ||
/polymoon/feedback |
17 | 0–127 | continuous | ||
/polymoon/mix |
18 | 0–127 | continuous | ||
/polymoon/multiply |
19 | 0–127 | continuous | ||
/polymoon/dimension |
20 | 0–127 | continuous | ||
/polymoon/dynamics |
21 | 0–127 | continuous | ||
/polymoon/early_modulation |
22 | 0–127 | continuous | ||
/polymoon/feedback_filter |
23 | 0–127 | continuous | ||
/polymoon/delay_level |
24 | 0–127 | continuous | ||
/polymoon/late_modulation |
25 | 0–127 | continuous | ||
/polymoon/dyn_flanger_mode |
26 | 0–127 | continuous | ||
/polymoon/dyn_flanger_speed |
27 | 0–127 | continuous | ||
/polymoon/tap |
28 | 0–127 | continuous | ||
/polymoon/phaser_mode |
29 | 0–127 | continuous | ||
/polymoon/flanger_feedback |
30 | 0–127 | continuous | ||
/polymoon/half_speed |
31 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /polymoon/note/on <note> <velocity>, /polymoon/cc/<number> <value>, /polymoon/pitchbend <0-16383>, /polymoon/program_change <n>.
Limitations¶
CC/NRPN only. SysEx (preset management, display control, bulk dump/load, vendor-proprietary opcodes) is NOT covered by pencilresearch. To extend this device with SysEx, sniff the vendor editor, add `sysex.header/footer` + `commands` blocks, and use `update_device.md` PR template.