Roland T-8: MIDI CC, NRPN and OSC map¶
The Roland T-8 as named OSC addresses — 7 drum sounds — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Roland T-8 |
|---|---|
| Vendor | Roland |
| OSC prefix | /t_8 |
| 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/roland/t_8.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/roland/t_8.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 t_8: ask “what can the Roland T-8 do?” and it reads this map with list_routes. See the MCP guide.
Drum sounds (7)¶
Send <address> [velocity] [note] [channel] to fire the sound (Note On).
| OSC address | Sound | Note(s) | Channel | Velocity |
|---|---|---|---|---|
/t_8/drum/bass |
Bass | 12–96 | 2 | |
/t_8/drum/bass_drum |
Bass drum | 36 | 10 | |
/t_8/drum/snare_drum |
Snare drum | 38 | 10 | |
/t_8/drum/hand_clap |
Hand clap | 50 | 10 | |
/t_8/drum/tom |
Tom | 47 | 10 | |
/t_8/drum/closed_hihat |
Closed hihat | 42 | 10 | |
/t_8/drum/open_hihat |
Open hihat | 46 | 10 |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /t_8/note/on <note> <velocity>, /t_8/cc/<number> <value>, /t_8/pitchbend <0-16383>, /t_8/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.