Yamaha DX-7 II: MIDI CC, NRPN and OSC map¶
The Yamaha DX-7 II as named OSC addresses — 68 SysEx commands — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Yamaha DX-7 II |
|---|---|
| Vendor | Yamaha |
| OSC prefix | /dx_7_ii |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/yamaha/dx_7_ii.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/yamaha/dx_7_ii.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 dx_7_ii: ask “what can the Yamaha DX-7 II do?” and it reads this map with list_routes. See the MCP guide.
SysEx commands (68)¶
| OSC address | Arguments |
|---|---|
/dx_7_ii/operator_1 |
val: u7 |
/dx_7_ii/operator_2 |
val: u7 |
/dx_7_ii/operator_3 |
val: u7 |
/dx_7_ii/operator_4 |
val: u7 |
/dx_7_ii/operator_5 |
val: u7 |
/dx_7_ii/operator_6 |
val: u7 |
/dx_7_ii/output_level |
val: u7 |
/dx_7_ii/freq_coarse |
val: u7 |
/dx_7_ii/freq_fine |
val: u7 |
/dx_7_ii/detune |
val: u7 |
/dx_7_ii/envelope |
val: u7 |
/dx_7_ii/key_left_curve |
val: u7 |
/dx_7_ii/key_left_depth |
val: u7 |
/dx_7_ii/break_point |
val: u7 |
/dx_7_ii/key_right_curve |
val: u7 |
/dx_7_ii/key_right_depth |
val: u7 |
/dx_7_ii/mode |
val: u7 |
/dx_7_ii/velocity |
val: u7 |
/dx_7_ii/amp_mod_sens |
val: u7 |
/dx_7_ii/key_rate_scaling |
val: u7 |
/dx_7_ii/eg |
val: u7 |
/dx_7_ii/eg_copy |
val: u7 |
/dx_7_ii/no |
val: u7 |
/dx_7_ii/yes |
val: u7 |
/dx_7_ii/op_1_select |
val: u7 |
/dx_7_ii/op_2_select |
val: u7 |
/dx_7_ii/op_3_select |
val: u7 |
/dx_7_ii/op_4_select |
val: u7 |
/dx_7_ii/op_5_select |
val: u7 |
/dx_7_ii/op_6_select |
val: u7 |
/dx_7_ii/algorithm |
val: u7 |
/dx_7_ii/feedback |
val: u7 |
/dx_7_ii/osc_key_sync |
val: u7 |
/dx_7_ii/unison_detune |
val: u7 |
/dx_7_ii/transpose |
val: u7 |
/dx_7_ii/master |
val: u7 |
/dx_7_ii/waveform |
val: u7 |
/dx_7_ii/speed |
val: u7 |
/dx_7_ii/delay |
val: u7 |
/dx_7_ii/delay_trigger |
val: u7 |
/dx_7_ii/pitch_mod_depth |
val: u7 |
/dx_7_ii/amp_mod_depth |
val: u7 |
/dx_7_ii/lfo_key_sync |
val: u7 |
/dx_7_ii/step |
val: u7 |
/dx_7_ii/time |
val: u7 |
/dx_7_ii/pitch_mod_sens |
val: u7 |
/dx_7_ii/env_range |
val: u7 |
/dx_7_ii/env_velocity |
val: u7 |
/dx_7_ii/pitch_env |
val: u7 |
/dx_7_ii/range |
val: u7 |
/dx_7_ii/pitch_mod |
val: u7 |
/dx_7_ii/amp_mod |
val: u7 |
/dx_7_ii/eg_bias |
val: u7 |
/dx_7_ii/pitch_bias |
val: u7 |
/dx_7_ii/voice_mode |
val: u7 |
/dx_7_ii/volume |
val: u7 |
/dx_7_ii/balance_a_b |
val: u7 |
/dx_7_ii/dual_detune |
val: u7 |
/dx_7_ii/split_point |
val: u7 |
/dx_7_ii/eg_forced_damp |
val: u7 |
/dx_7_ii/note_shift_a |
val: u7 |
/dx_7_ii/note_shift_b |
val: u7 |
/dx_7_ii/voice_number_a |
val: u7 |
/dx_7_ii/voice_number_b |
val: u7 |
/dx_7_ii/cs_1_select |
val: u7 |
/dx_7_ii/a |
val: u7 |
/dx_7_ii/b |
val: u7 |
/dx_7_ii/cs_2_select |
val: u7 |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /dx_7_ii/note/on <note> <velocity>, /dx_7_ii/cc/<number> <value>, /dx_7_ii/pitchbend <0-16383>, /dx_7_ii/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.