Polyend Tracker: MIDI CC, NRPN and OSC map¶
The Polyend Tracker as named OSC addresses — 32 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Polyend Tracker |
|---|---|
| Vendor | Polyend |
| OSC prefix | /tracker |
| 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/polyend/tracker.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/polyend/tracker.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 tracker: ask “what can the Polyend Tracker do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (32)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/tracker/performance_effect/track_1_pattern_select |
41 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/track_2_pattern_select |
42 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/track_3_pattern_select |
43 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/track_4_pattern_select |
44 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/track_5_pattern_select |
45 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/track_6_pattern_select |
46 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/track_7_pattern_select |
47 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/track_8_pattern_select |
48 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_1_value_top_row |
51 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_2_value_top_row |
52 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_3_value_top_row |
53 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_4_value_top_row |
54 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_5_value_top_row |
55 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_6_value_top_row |
56 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_7_value_top_row |
57 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_8_value_top_row |
58 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_9_value_top_row |
59 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_10_value_top_row |
60 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_11_value_top_row |
61 | 0–127 | continuous | Performance effect | |
/tracker/performance_effect/slot_12_value_top_row |
62 | 0–127 | continuous | Performance effect | |
/tracker/track_mixer/track_1_volume_level |
71 | 0–127 | continuous | Track mixer | |
/tracker/track_mixer/track_2_volume_level |
72 | 0–127 | continuous | Track mixer | |
/tracker/track_mixer/track_3_volume_level |
73 | 0–127 | continuous | Track mixer | |
/tracker/track_mixer/track_4_volume_level |
74 | 0–127 | continuous | Track mixer | |
/tracker/track_mixer/track_5_volume_level |
75 | 0–127 | continuous | Track mixer | |
/tracker/track_mixer/track_6_volume_level |
76 | 0–127 | continuous | Track mixer | |
/tracker/track_mixer/track_7_volume_level |
77 | 0–127 | continuous | Track mixer | |
/tracker/track_mixer/track_8_volume_level |
78 | 0–127 | continuous | Track mixer | |
/tracker/global_mixer/delay_mix |
79 | 0–127 | continuous | Global mixer | |
/tracker/global_mixer/reverb_mix |
80 | 0–127 | continuous | Global mixer | |
/tracker/global_mixer/dry_mix |
81 | 0–127 | continuous | Global mixer | |
/tracker/global_mixer/line_input |
82 | 0–127 | continuous | Global mixer |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /tracker/note/on <note> <velocity>, /tracker/cc/<number> <value>, /tracker/pitchbend <0-16383>, /tracker/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.