Underscores _recurBOY_: MIDI CC, NRPN and OSC map¶
The Underscores _recurBOY_ as named OSC addresses — 24 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Underscores recurBOY |
|---|---|
| Vendor | Underscores |
| OSC prefix | /recurboy |
| 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/underscores/recurboy.pencilresearch.fw-unknown.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/underscores/recurboy.pencilresearch.fw-unknown.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 recurboy: ask “what can the Underscores _recurBOY_ do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (24)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/recurboy/controls/moveup |
43 | 0–127 | continuous | Controls | |
/recurboy/controls/movedown |
44 | 0–127 | continuous | Controls | |
/recurboy/controls/moveleft |
58 | 0–127 | continuous | Controls | |
/recurboy/controls/moveright |
59 | 0–127 | continuous | Controls | |
/recurboy/controls/enter |
42 | 0–127 | continuous | Controls | |
/recurboy/controls/switchsource |
45 | 0–127 | continuous | Controls | |
/recurboy/controls/playswitch |
41 | 0–127 | continuous | Controls | |
/recurboy/controls/fxswitch |
46 | 0–127 | continuous | Controls | |
/recurboy/shader/setshaderparam0 |
0 | 0–127 | continuous | Shader | |
/recurboy/shader/setshaderparam1 |
1 | 0–127 | continuous | Shader | |
/recurboy/shader/setshaderparam2 |
2 | 0–127 | continuous | Shader | |
/recurboy/shader/setshaderspeed |
3 | 0–127 | continuous | Shader | |
/recurboy/effect/seteffectparam0 |
16 | 0–127 | continuous | Effect | |
/recurboy/effect/seteffectparam1 |
17 | 0–127 | continuous | Effect | |
/recurboy/effect/seteffectparam2 |
18 | 0–127 | continuous | Effect | |
/recurboy/effect/seteffectspeed |
19 | 0–127 | continuous | Effect | |
/recurboy/text/settextdisplacex |
4 | 0–127 | continuous | Text | |
/recurboy/text/settextdisplacey |
5 | 0–127 | continuous | Text | |
/recurboy/text/settextdisplacewidth |
6 | 0–127 | continuous | Text | |
/recurboy/text/settextdisplaceheight |
7 | 0–127 | continuous | Text | |
/recurboy/text/settextcolorhue |
20 | 0–127 | continuous | Text | |
/recurboy/text/settextcolorsat |
21 | 0–127 | continuous | Text | |
/recurboy/text/settextcolorbrightness |
22 | 0–127 | continuous | Text | |
/recurboy/text/settextcoloralpha |
23 | 0–127 | continuous | Text |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /recurboy/note/on <note> <velocity>, /recurboy/cc/<number> <value>, /recurboy/pitchbend <0-16383>, /recurboy/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.