Korg volca: MIDI CC, NRPN and OSC map¶
The Korg volca as named OSC addresses — 184 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Korg volca |
|---|---|
| Vendor | Korg |
| OSC prefix | /volca |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/korg/volca.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/korg/volca.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 volca: ask “what can the Korg volca do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (184)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/volca/select1 |
14 | 0–127 | continuous | ||
/volca/select2 |
15 | 0–127 | continuous | ||
/volca/select1_2 |
16 | 0–127 | continuous | ||
/volca/egatt1 |
20 | 0–127 | continuous | ||
/volca/egatt2 |
21 | 0–127 | continuous | ||
/volca/egatt1_2 |
22 | 0–127 | continuous | ||
/volca/level1 |
17 | 0–127 | continuous | ||
/volca/level2 |
18 | 0–127 | continuous | ||
/volca/level1_2 |
19 | 0–127 | continuous | ||
/volca/egrel1 |
23 | 0–127 | continuous | ||
/volca/egrel2 |
24 | 0–127 | continuous | ||
/volca/egrel1_2 |
25 | 0–127 | continuous | ||
/volca/pitch1 |
26 | 0–127 | continuous | ||
/volca/pitch2 |
27 | 0–127 | continuous | ||
/volca/pitch1_2 |
28 | 0–127 | continuous | ||
/volca/modamt1 |
29 | 0–127 | continuous | ||
/volca/modamt2 |
30 | 0–127 | continuous | ||
/volca/modamt1_2 |
31 | 0–127 | continuous | ||
/volca/pan |
10 | -63–63 | continuous | ||
/volca/modrate1 |
46 | 0–127 | continuous | ||
/volca/modrate2 |
47 | 0–127 | continuous | ||
/volca/modrate1_2 |
48 | 0–127 | continuous | ||
/volca/bit_red |
49 | 0–127 | continuous | ||
/volca/fold |
50 | 0–127 | continuous | ||
/volca/drive |
51 | 0–127 | continuous | ||
/volca/dry_gain |
52 | 0–127 | continuous | ||
/volca/send |
103 | 0–127 | continuous | ||
/volca/fader |
116 | 0–127 | continuous | ||
/volca/decay |
117 | 0–127 | continuous | ||
/volca/body |
118 | 0–127 | continuous | ||
/volca/tune |
119 | 0–127 | continuous | ||
/volca/select1 |
14 | 0–127 | continuous | ||
/volca/select2 |
15 | 0–127 | continuous | ||
/volca/select1_2 |
16 | 0–127 | continuous | ||
/volca/egatt1 |
20 | 0–127 | continuous | ||
/volca/egatt2 |
21 | 0–127 | continuous | ||
/volca/egatt1_2 |
22 | 0–127 | continuous | ||
/volca/level1 |
17 | 0–127 | continuous | ||
/volca/level2 |
18 | 0–127 | continuous | ||
/volca/level1_2 |
19 | 0–127 | continuous | ||
/volca/egrel1 |
23 | 0–127 | continuous | ||
/volca/egrel2 |
24 | 0–127 | continuous | ||
/volca/egrel1_2 |
25 | 0–127 | continuous | ||
/volca/pitch1 |
26 | 0–127 | continuous | ||
/volca/pitch2 |
27 | 0–127 | continuous | ||
/volca/pitch1_2 |
28 | 0–127 | continuous | ||
/volca/modamt1 |
29 | 0–127 | continuous | ||
/volca/modamt2 |
30 | 0–127 | continuous | ||
/volca/modamt1_2 |
31 | 0–127 | continuous | ||
/volca/pan |
10 | -63–63 | continuous | ||
/volca/modrate1 |
46 | 0–127 | continuous | ||
/volca/modrate2 |
47 | 0–127 | continuous | ||
/volca/modrate1_2 |
48 | 0–127 | continuous | ||
/volca/bit_red |
49 | 0–127 | continuous | ||
/volca/fold |
50 | 0–127 | continuous | ||
/volca/drive |
51 | 0–127 | continuous | ||
/volca/dry_gain |
52 | 0–127 | continuous | ||
/volca/send |
103 | 0–127 | continuous | ||
/volca/fader |
116 | 0–127 | continuous | ||
/volca/decay |
117 | 0–127 | continuous | ||
/volca/body |
118 | 0–127 | continuous | ||
/volca/select1 |
14 | 0–127 | continuous | ||
/volca/select2 |
15 | 0–127 | continuous | ||
/volca/select1_2 |
16 | 0–127 | continuous | ||
/volca/egatt1 |
20 | 0–127 | continuous | ||
/volca/egatt2 |
21 | 0–127 | continuous | ||
/volca/egatt1_2 |
22 | 0–127 | continuous | ||
/volca/level1 |
17 | 0–127 | continuous | ||
/volca/level2 |
18 | 0–127 | continuous | ||
/volca/level1_2 |
19 | 0–127 | continuous | ||
/volca/egrel1 |
23 | 0–127 | continuous | ||
/volca/egrel2 |
24 | 0–127 | continuous | ||
/volca/egrel1_2 |
25 | 0–127 | continuous | ||
/volca/pitch1 |
26 | 0–127 | continuous | ||
/volca/pitch2 |
27 | 0–127 | continuous | ||
/volca/pitch1_2 |
28 | 0–127 | continuous | ||
/volca/modamt1 |
29 | 0–127 | continuous | ||
/volca/modamt2 |
30 | 0–127 | continuous | ||
/volca/modamt1_2 |
31 | 0–127 | continuous | ||
/volca/pan |
10 | -63–63 | continuous | ||
/volca/modrate1 |
46 | 0–127 | continuous | ||
/volca/modrate2 |
47 | 0–127 | continuous | ||
/volca/modrate1_2 |
48 | 0–127 | continuous | ||
/volca/bit_red |
49 | 0–127 | continuous | ||
/volca/fold |
50 | 0–127 | continuous | ||
/volca/drive |
51 | 0–127 | continuous | ||
/volca/dry_gain |
52 | 0–127 | continuous | ||
/volca/send |
103 | 0–127 | continuous | ||
/volca/fader |
116 | 0–127 | continuous | ||
/volca/decay |
117 | 0–127 | continuous | ||
/volca/body |
118 | 0–127 | continuous | ||
/volca/tune |
119 | 0–127 | continuous | ||
/volca/select1 |
14 | 0–127 | continuous | ||
/volca/select2 |
15 | 0–127 | continuous | ||
/volca/select1_2 |
16 | 0–127 | continuous | ||
/volca/egatt1 |
20 | 0–127 | continuous | ||
/volca/egatt2 |
21 | 0–127 | continuous | ||
/volca/egatt1_2 |
22 | 0–127 | continuous | ||
/volca/level1 |
17 | 0–127 | continuous | ||
/volca/level2 |
18 | 0–127 | continuous | ||
/volca/level1_2 |
19 | 0–127 | continuous | ||
/volca/egrel1 |
23 | 0–127 | continuous | ||
/volca/egrel2 |
24 | 0–127 | continuous | ||
/volca/egrel1_2 |
25 | 0–127 | continuous | ||
/volca/pitch1 |
26 | 0–127 | continuous | ||
/volca/pitch2 |
27 | 0–127 | continuous | ||
/volca/pitch1_2 |
28 | 0–127 | continuous | ||
/volca/modamt1 |
29 | 0–127 | continuous | ||
/volca/modamt2 |
30 | 0–127 | continuous | ||
/volca/modamt1_2 |
31 | 0–127 | continuous | ||
/volca/pan |
10 | -63–63 | continuous | ||
/volca/modrate1 |
46 | 0–127 | continuous | ||
/volca/modrate2 |
47 | 0–127 | continuous | ||
/volca/modrate1_2 |
48 | 0–127 | continuous | ||
/volca/bit_red |
49 | 0–127 | continuous | ||
/volca/fold |
50 | 0–127 | continuous | ||
/volca/drive |
51 | 0–127 | continuous | ||
/volca/dry_gain |
52 | 0–127 | continuous | ||
/volca/send |
103 | 0–127 | continuous | ||
/volca/fader |
116 | 0–127 | continuous | ||
/volca/decay |
117 | 0–127 | continuous | ||
/volca/body |
118 | 0–127 | continuous | ||
/volca/tune |
119 | 0–127 | continuous | ||
/volca/select1 |
14 | 0–127 | continuous | ||
/volca/select2 |
15 | 0–127 | continuous | ||
/volca/select1_2 |
16 | 0–127 | continuous | ||
/volca/egatt1 |
20 | 0–127 | continuous | ||
/volca/egatt2 |
21 | 0–127 | continuous | ||
/volca/egatt1_2 |
22 | 0–127 | continuous | ||
/volca/level1 |
17 | 0–127 | continuous | ||
/volca/level2 |
18 | 0–127 | continuous | ||
/volca/level1_2 |
19 | 0–127 | continuous | ||
/volca/egrel1 |
23 | 0–127 | continuous | ||
/volca/egrel2 |
24 | 0–127 | continuous | ||
/volca/egrel1_2 |
25 | 0–127 | continuous | ||
/volca/pitch2 |
27 | 0–127 | continuous | ||
/volca/pitch1_2 |
28 | 0–127 | continuous | ||
/volca/modamt1 |
29 | 0–127 | continuous | ||
/volca/modamt2 |
30 | 0–127 | continuous | ||
/volca/modamt1_2 |
31 | 0–127 | continuous | ||
/volca/pan |
10 | -63–63 | continuous | ||
/volca/modrate1 |
46 | 0–127 | continuous | ||
/volca/modrate2 |
47 | 0–127 | continuous | ||
/volca/modrate1_2 |
48 | 0–127 | continuous | ||
/volca/bit_red |
49 | 0–127 | continuous | ||
/volca/fold |
50 | 0–127 | continuous | ||
/volca/drive |
51 | 0–127 | continuous | ||
/volca/dry_gain |
52 | 0–127 | continuous | ||
/volca/send |
103 | 0–127 | continuous | ||
/volca/fader |
116 | 0–127 | continuous | ||
/volca/decay |
117 | 0–127 | continuous | ||
/volca/body |
118 | 0–127 | continuous | ||
/volca/tune |
119 | 0–127 | continuous | ||
/volca/select1 |
14 | 0–127 | continuous | ||
/volca/select2 |
15 | 0–127 | continuous | ||
/volca/select1_2 |
16 | 0–127 | continuous | ||
/volca/egatt1 |
20 | 0–127 | continuous | ||
/volca/egatt2 |
21 | 0–127 | continuous | ||
/volca/egatt1_2 |
22 | 0–127 | continuous | ||
/volca/level1 |
17 | 0–127 | continuous | ||
/volca/level2 |
18 | 0–127 | continuous | ||
/volca/level1_2 |
19 | 0–127 | continuous | ||
/volca/egrel1 |
23 | 0–127 | continuous | ||
/volca/egrel2 |
24 | 0–127 | continuous | ||
/volca/egrel1_2 |
25 | 0–127 | continuous | ||
/volca/pitch1 |
26 | 0–127 | continuous | ||
/volca/pitch2 |
27 | 0–127 | continuous | ||
/volca/pitch1_2 |
28 | 0–127 | continuous | ||
/volca/modamt1 |
29 | 0–127 | continuous | ||
/volca/modamt2 |
30 | 0–127 | continuous | ||
/volca/modamt1_2 |
31 | 0–127 | continuous | ||
/volca/pan |
10 | -63–63 | continuous | ||
/volca/modrate1 |
46 | 0–127 | continuous | ||
/volca/modrate2 |
47 | 0–127 | continuous | ||
/volca/modrate1_2 |
48 | 0–127 | continuous | ||
/volca/bit_red |
49 | 0–127 | continuous | ||
/volca/fold |
50 | 0–127 | continuous | ||
/volca/drive |
51 | 0–127 | continuous | ||
/volca/dry_gain |
52 | 0–127 | continuous | ||
/volca/send |
103 | 0–127 | continuous | ||
/volca/fader |
116 | 0–127 | continuous | ||
/volca/decay |
117 | 0–127 | continuous | ||
/volca/body |
118 | 0–127 | continuous | ||
/volca/tune |
119 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /volca/note/on <note> <velocity>, /volca/cc/<number> <value>, /volca/pitchbend <0-16383>, /volca/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.