Roland TR-8: MIDI CC, NRPN and OSC map¶
The Roland TR-8 as named OSC addresses — 50 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Roland TR-8 |
|---|---|
| Vendor | Roland |
| OSC prefix | /tr_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/tr_8.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/tr_8.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 tr_8: ask “what can the Roland TR-8 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (50)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/tr_8/shuffle |
9 | 0–127 | continuous | ||
/tr_8/external_in_level |
12 | 0–127 | continuous | ||
/tr_8/external_in_side_chain |
13 | 0–127 | continuous | ||
/tr_8/delay_level |
16 | 0–127 | continuous | ||
/tr_8/delay_time |
17 | 0–127 | continuous | ||
/tr_8/delay_feedback |
18 | 0–127 | continuous | ||
/tr_8/bd_tune |
20 | 0–127 | continuous | ||
/tr_8/bd_attack |
21 | 0–127 | continuous | ||
/tr_8/bd_comp |
22 | 0–127 | continuous | ||
/tr_8/bd_decay |
23 | 0–127 | continuous | ||
/tr_8/bd_level |
24 | 0–127 | continuous | ||
/tr_8/sd_tune |
25 | 0–127 | continuous | ||
/tr_8/sd_snappy |
26 | 0–127 | continuous | ||
/tr_8/sd_comp |
27 | 0–127 | continuous | ||
/tr_8/sd_decay |
28 | 0–127 | continuous | ||
/tr_8/sd_level |
29 | 0–127 | continuous | ||
/tr_8/lt_tune |
46 | 0–127 | continuous | ||
/tr_8/lt_decay |
47 | 0–127 | continuous | ||
/tr_8/lt_level |
48 | 0–127 | continuous | ||
/tr_8/mt_tune |
49 | 0–127 | continuous | ||
/tr_8/mt_decay |
50 | 0–127 | continuous | ||
/tr_8/mt_level |
51 | 0–127 | continuous | ||
/tr_8/ht_tune |
52 | 0–127 | continuous | ||
/tr_8/ht_decay |
53 | 0–127 | continuous | ||
/tr_8/ht_level |
54 | 0–127 | continuous | ||
/tr_8/rs_tune |
55 | 0–127 | continuous | ||
/tr_8/rs_decay |
56 | 0–127 | continuous | ||
/tr_8/rs_level |
57 | 0–127 | continuous | ||
/tr_8/hc_tune |
58 | 0–127 | continuous | ||
/tr_8/hc_decay |
59 | 0–127 | continuous | ||
/tr_8/hc_level |
60 | 0–127 | continuous | ||
/tr_8/ch_tune |
61 | 0–127 | continuous | ||
/tr_8/ch_decay |
62 | 0–127 | continuous | ||
/tr_8/ch_level |
63 | 0–127 | continuous | ||
/tr_8/scatter_type |
68 | 0–127 | continuous | ||
/tr_8/scatter_depth |
69 | 0–127 | continuous | ||
/tr_8/scatter_sw |
70 | 0–127 | continuous | ||
/tr_8/accent |
71 | 0–127 | continuous | ||
/tr_8/oh_tune |
80 | 0–127 | continuous | ||
/tr_8/oh_decay |
81 | 0–127 | continuous | ||
/tr_8/oh_level |
82 | 0–127 | continuous | ||
/tr_8/cc_tune |
83 | 0–127 | continuous | ||
/tr_8/cc_decay |
84 | 0–127 | continuous | ||
/tr_8/cc_level |
85 | 0–127 | continuous | ||
/tr_8/rc_tune |
86 | 0–127 | continuous | ||
/tr_8/rc_decay |
87 | 0–127 | continuous | ||
/tr_8/rc_level |
88 | 0–127 | continuous | ||
/tr_8/reverb_time |
89 | 0–127 | continuous | ||
/tr_8/reverb_gate |
90 | 0–127 | continuous | ||
/tr_8/reverb_level |
91 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /tr_8/note/on <note> <velocity>, /tr_8/cc/<number> <value>, /tr_8/pitchbend <0-16383>, /tr_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.