Oberheim OB-3 sqr V1: MIDI CC, NRPN and OSC map¶
The Oberheim OB-3 sqr V1 as named OSC addresses — 9 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Oberheim OB-3 sqr V1 |
|---|---|
| Vendor | Oberheim |
| OSC prefix | /ob_3_sqr_v1 |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/oberheim/ob_3_sqr_v1.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/oberheim/ob_3_sqr_v1.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 ob_3_sqr_v1: ask “what can the Oberheim OB-3 sqr V1 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (9)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/ob_3_sqr_v1/master_vol |
7 | 0–127 | continuous | ||
/ob_3_sqr_v1/delay_time |
102 | 0–127 | continuous | ||
/ob_3_sqr_v1/feedback |
103 | 0–127 | continuous | ||
/ob_3_sqr_v1/expr_pedal |
11 | 0–127 | continuous | ||
/ob_3_sqr_v1/slow_speed |
14 | 0–127 | continuous | ||
/ob_3_sqr_v1/acceleration |
12 | 0–127 | continuous | ||
/ob_3_sqr_v1/deceleration |
13 | 0–127 | continuous | ||
/ob_3_sqr_v1/all_sounds_off |
120 | 0–127 | continuous | ||
/ob_3_sqr_v1/damper |
64 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /ob_3_sqr_v1/note/on <note> <velocity>, /ob_3_sqr_v1/cc/<number> <value>, /ob_3_sqr_v1/pitchbend <0-16383>, /ob_3_sqr_v1/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.