Bohm 4x9: MIDI CC, NRPN and OSC map¶
The Bohm 4x9 as named OSC addresses — 35 SysEx commands — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Bohm 4x9 |
|---|---|
| Vendor | Bohm |
| OSC prefix | /bohm_4x9 |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/bohm/bohm_4x9.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/bohm/bohm_4x9.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 bohm_4x9: ask “what can the Bohm 4x9 do?” and it reads this map with list_routes. See the MCP guide.
SysEx commands (35)¶
| OSC address | Arguments |
|---|---|
/bohm_4x9/attack_1 |
val: u7 |
/bohm_4x9/attack_2 |
val: u7 |
/bohm_4x9/attack_3 |
val: u7 |
/bohm_4x9/attack_4 |
val: u7 |
/bohm_4x9/volume |
val: u7 |
/bohm_4x9/decay_1 |
val: u7 |
/bohm_4x9/decay_2 |
val: u7 |
/bohm_4x9/decay_3 |
val: u7 |
/bohm_4x9/decay_4 |
val: u7 |
/bohm_4x9/octave |
val: u7 |
/bohm_4x9/sustain_1 |
val: u7 |
/bohm_4x9/sustain_2 |
val: u7 |
/bohm_4x9/sustain_3 |
val: u7 |
/bohm_4x9/sustain_4 |
val: u7 |
/bohm_4x9/output |
val: u7 |
/bohm_4x9/release_1 |
val: u7 |
/bohm_4x9/release_2 |
val: u7 |
/bohm_4x9/release_3 |
val: u7 |
/bohm_4x9/release_4 |
val: u7 |
/bohm_4x9/connection |
val: u7 |
/bohm_4x9/detune |
val: u7 |
/bohm_4x9/2nd_generator |
val: u7 |
/bohm_4x9/feedback |
val: u7 |
/bohm_4x9/repeat |
val: u7 |
/bohm_4x9/1 |
val: u7 |
/bohm_4x9/2 |
val: u7 |
/bohm_4x9/3 |
val: u7 |
/bohm_4x9/4 |
val: u7 |
/bohm_4x9/attack |
val: u7 |
/bohm_4x9/decay |
val: u7 |
/bohm_4x9/type |
val: u7 |
/bohm_4x9/range |
val: u7 |
/bohm_4x9/delay |
val: u7 |
/bohm_4x9/freq |
val: u7 |
/bohm_4x9/depth |
val: u7 |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /bohm_4x9/note/on <note> <velocity>, /bohm_4x9/cc/<number> <value>, /bohm_4x9/pitchbend <0-16383>, /bohm_4x9/program_change <n>.
Limitations¶
Imported from an Electra One community preset. The mapping reflects the preset author's editorial choices: parameter naming, ranges, and which params are exposed. Untested on hardware in this repo.