OTO Machines FX BISCUIT: MIDI CC, NRPN and OSC map¶
The OTO Machines FX BISCUIT as named OSC addresses — 25 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | OTO Machines FX BISCUIT |
|---|---|
| Vendor | OTO Machines FX |
| OSC prefix | /biscuit |
| 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/oto-machines-fx/biscuit.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/oto-machines-fx/biscuit.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 biscuit: ask “what can the OTO Machines FX BISCUIT do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (25)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/biscuit/drive/input_gain |
14 | 0–127 | continuous | Drive | |
/biscuit/mixer/dry_level_naked |
15 | 0–127 | continuous | Mixer | |
/biscuit/mixer/8bit_level_dressed |
16 | 0–127 | continuous | Mixer | |
/biscuit/filter/resonance_q |
17 | 0–127 | continuous | Filter | |
/biscuit/filter/cutoff_frequency |
18 | 0–127 | continuous | Filter | |
/biscuit/clock/sample_rate |
19 | 0–127 | continuous | Clock | |
/biscuit/bits/bit_1 |
20 | 0–127 | continuous | Bits | |
/biscuit/bits/bit_2 |
21 | 0–127 | continuous | Bits | |
/biscuit/bits/bit_3 |
22 | 0–127 | continuous | Bits | |
/biscuit/bits/bit_4 |
23 | 0–127 | continuous | Bits | |
/biscuit/bits/bit_5 |
24 | 0–127 | continuous | Bits | |
/biscuit/bits/bit_6 |
25 | 0–127 | continuous | Bits | |
/biscuit/bits/bit_7 |
26 | 0–127 | continuous | Bits | |
/biscuit/bits/bit_8 |
27 | 0–127 | continuous | Bits | |
/biscuit/system/bypass |
28 | 0–127 | continuous | System | |
/biscuit/filter/mode |
29 | 0–127 | continuous | Filter | |
/biscuit/fx/type |
30 | 0–127 | continuous | FX | |
/biscuit/fx/waveshaper_type |
31 | 0–127 | continuous | FX | |
/biscuit/delay/division |
32 | 0–127 | continuous | Delay | |
/biscuit/delay/feedback |
33 | 0–127 | continuous | Delay | |
/biscuit/delay/free_clock_enable |
34 | 0–127 | continuous | Delay | |
/biscuit/pitch/shift |
35 | 0–127 | continuous | Pitch | |
/biscuit/stepfilter/play_mode |
36 | 0–127 | continuous | StepFilter | |
/biscuit/stepfilter/speed |
37 | 0–127 | continuous | StepFilter | |
/biscuit/stepfilter/steps |
38 | 0–127 | continuous | StepFilter |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /biscuit/note/on <note> <velocity>, /biscuit/cc/<number> <value>, /biscuit/pitchbend <0-16383>, /biscuit/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.