Meris Ottobit Jr: MIDI CC, NRPN and OSC map¶
The Meris Ottobit Jr as named OSC addresses — 18 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Meris Ottobit Jr |
|---|---|
| Vendor | Meris |
| OSC prefix | /ottobit_jr |
| 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/meris/ottobit_jr.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/meris/ottobit_jr.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 ottobit_jr: ask “what can the Meris Ottobit Jr do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (18)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/ottobit_jr/expr_pedal |
4 | 0–127 | continuous | ||
/ottobit_jr/bypass |
14 | 0–127 | continuous | ||
/ottobit_jr/tempo |
15 | 0–127 | continuous | ||
/ottobit_jr/smpl_rate |
16 | 0–127 | continuous | ||
/ottobit_jr/filter |
17 | 0–127 | continuous | ||
/ottobit_jr/bits |
18 | 0–127 | continuous | ||
/ottobit_jr/stutter |
19 | 0–127 | continuous | ||
/ottobit_jr/stutter_hold |
31 | 0–127 | continuous | ||
/ottobit_jr/sequencer |
20 | 0–127 | continuous | ||
/ottobit_jr/seq_mult |
21 | 0–127 | continuous | ||
/ottobit_jr/seq_type |
29 | 0–127 | continuous | ||
/ottobit_jr/step1 |
22 | 0–127 | continuous | ||
/ottobit_jr/step2 |
23 | 0–127 | continuous | ||
/ottobit_jr/step3 |
24 | 0–127 | continuous | ||
/ottobit_jr/step4 |
25 | 0–127 | continuous | ||
/ottobit_jr/step5 |
26 | 0–127 | continuous | ||
/ottobit_jr/step6 |
27 | 0–127 | continuous | ||
/ottobit_jr/tap |
28 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /ottobit_jr/note/on <note> <velocity>, /ottobit_jr/cc/<number> <value>, /ottobit_jr/pitchbend <0-16383>, /ottobit_jr/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.