Universal Audio Ruby '63: MIDI CC, NRPN and OSC map¶
The Universal Audio Ruby '63 as named OSC addresses — 19 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Universal Audio Ruby '63 |
|---|---|
| Vendor | Universal Audio |
| OSC prefix | /ruby_63 |
| 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/universal-audio/ruby_63.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/universal-audio/ruby_63.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 ruby_63: ask “what can the Universal Audio Ruby '63 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (19)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/ruby_63/global_controls/bypass |
19 | 0–2 | continuous | Global controls | |
/ruby_63/global_controls/store |
16 | 0–1 | switch | Global controls | |
/ruby_63/footswitches/footswitch_left |
12 | 0–1 | switch | Footswitches | |
/ruby_63/footswitches/footswitch_right |
13 | 0–1 | switch | Footswitches | |
/ruby_63/amp/channel_select |
17 | 0–2 | continuous | Amp | |
/ruby_63/amp/output |
7 | 0–127 | continuous | Amp | |
/ruby_63/amp/volume |
22 | 0–127 | continuous | Amp | |
/ruby_63/amp/bass |
31 | 0–127 | continuous | Amp | |
/ruby_63/amp/treble |
33 | 0–127 | continuous | Amp | |
/ruby_63/amp/cut |
36 | 0–127 | continuous | Amp | |
/ruby_63/amp/room |
30 | 0–127 | continuous | Amp | |
/ruby_63/amp/boost_enable |
40 | 0–1 | switch | Amp | |
/ruby_63/amp/boost |
41 | 0–127 | continuous | Amp | |
/ruby_63/cabinet/cab_select |
18 | 0–6 | continuous | Cabinet | |
/ruby_63/cabinet/cab_up |
14 | 0–1 | switch | Cabinet | |
/ruby_63/cabinet/cab_down |
15 | 0–1 | switch | Cabinet | |
/ruby_63/vibrato/vib_enable |
60 | 0–1 | switch | Vibrato | |
/ruby_63/vibrato/vib_speed |
61 | 0–127 | continuous | Vibrato | |
/ruby_63/vibrato/vib_intensity |
62 | 0–127 | continuous | Vibrato |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /ruby_63/note/on <note> <velocity>, /ruby_63/cc/<number> <value>, /ruby_63/pitchbend <0-16383>, /ruby_63/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.