devices/crumar/bit_01.electra-community.fw-tauntek.jsonEdit on GitHubJSONCrumar Bit 01 MIDI CC chart, NRPN and OSC map
The Crumar Bit 01 MIDI implementation: 55 CC, each named, for Claude (MCP), SuperCollider or any OSC app.
- sourceElectra One preset
- firmwaretauntek
- real unitnot yet checked
Not checked on a real Crumar Bit 01 yet. Own one? Load a sound or send a control, and tell us whether it worked.
- Maker
- Crumar
- Version
- per Electra preset
- Source
- Electra One preset
- OSC prefix
/bit_01
Use 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/crumar/bit_01.electra-community.fw-tauntek.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 bit_01: ask “what can the Crumar Bit 01 do?” and it reads this map with list_routes. See the MCP guide.
MIDI controls
55 controls, each with its number, its range and the name to send
| Control | CC | Range | Name to send |
|---|---|---|---|
| Dco1 octave | 14 | 0–127 | /bit_01/dco1_octave |
| Dco1 saw | 17 | 0–127 | /bit_01/dco1_saw |
| Dco1 triangle | 16 | 0–127 | /bit_01/dco1_triangle |
| Dco1 pulse | 18 | 0–127 | /bit_01/dco1_pulse |
| Dco1 pw | 19 | 0–30 | /bit_01/dco1_pw |
| Dco1 dyn pwm | 20 | 0–63 | /bit_01/dco1_dyn_pwm |
| Dco2 octave | 21 | 0–127 | /bit_01/dco2_octave |
| Dco2 saw | 24 | 0–127 | /bit_01/dco2_saw |
| Dco2 triangle | 23 | 0–127 | /bit_01/dco2_triangle |
| Dco2 pulse | 25 | 0–127 | /bit_01/dco2_pulse |
| Dco2 pw | 26 | 0–30 | /bit_01/dco2_pw |
| Dco2 dyn pwm | 27 | 0–63 | /bit_01/dco2_dyn_pwm |
| Dco1 freq | 15 | 0–11 | /bit_01/dco1_freq |
| Dco1 noise | 29 | 0–63 | /bit_01/dco1_noise |
| Dco2 freq | 22 | 0–11 | /bit_01/dco2_freq |
| Dco2 detune | 28 | 0–63 | /bit_01/dco2_detune |
| All notes off | 123 | 0–127 | /bit_01/all_notes_off |
| Mod wheel amt | 1 | 0–63 | /bit_01/mod_wheel_amt |
| Cutoff | 74 | 0–63 | /bit_01/cutoff |
| Resonance | 71 | 0–63 | /bit_01/resonance |
| Invert | 37 | 0–127 | /bit_01/invert |
| Env amount | 35 | 0–63 | /bit_01/env_amount |
| Key track | 38 | 0–63 | /bit_01/key_track |
| Patch volume | 7 | 0–63 | /bit_01/patch_volume |
| Vcf attack | 30 | 0–127 | /bit_01/vcf_attack |
| Vcf attack | 32 | 0–127 | /bit_01/vcf_attack |
| Vcf attack | 33 | 0–127 | /bit_01/vcf_attack |
| Vcf attack | 34 | 0–127 | /bit_01/vcf_attack |
| Dyn attack | 31 | 0–63 | /bit_01/dyn_attack |
| Dyn envelope | 36 | 0–63 | /bit_01/dyn_envelope |
| Vca attack | 73 | 0–127 | /bit_01/vca_attack |
| Vca attack | 40 | 0–127 | /bit_01/vca_attack |
| Vca attack | 41 | 0–127 | /bit_01/vca_attack |
| Vca attack | 72 | 0–127 | /bit_01/vca_attack |
| Dyn attack | 39 | 0–63 | /bit_01/dyn_attack |
| Dyn envelope | 42 | 0–63 | /bit_01/dyn_envelope |
| Lfo1 waveform | 47 | 0–127 | /bit_01/lfo1_waveform |
| Lfo1 vca | 46 | 0–127 | /bit_01/lfo1_vca |
| Lfo1 vcf | 45 | 0–127 | /bit_01/lfo1_vcf |
| Lfo1 dco1 | 43 | 0–127 | /bit_01/lfo1_dco1 |
| Lfo1 dco2 | 44 | 0–127 | /bit_01/lfo1_dco2 |
| Lfo wheel amt | 61 | 0–63 | /bit_01/lfo_wheel_amt |
| Lfo1 rate | 48 | 0–63 | /bit_01/lfo1_rate |
| Lfo1 delay | 50 | 0–63 | /bit_01/lfo1_delay |
| Lfo1 dyn rate | 49 | 0–63 | /bit_01/lfo1_dyn_rate |
| Lfo1 depth | 51 | 0–63 | /bit_01/lfo1_depth |
| Lfo2 waveform | 56 | 0–127 | /bit_01/lfo2_waveform |
| Lfo2 vca | 55 | 0–127 | /bit_01/lfo2_vca |
| Lfo2 vcf | 54 | 0–127 | /bit_01/lfo2_vcf |
| Lfo2 dco1 | 52 | 0–127 | /bit_01/lfo2_dco1 |
| Lfo2 dco2 | 53 | 0–127 | /bit_01/lfo2_dco2 |
| Lfo2 rate | 57 | 0–63 | /bit_01/lfo2_rate |
| Lfo2 delay | 59 | 0–63 | /bit_01/lfo2_delay |
| Lfo2 dyn rate | 58 | 0–63 | /bit_01/lfo2_dyn_rate |
| Lfo2 depth | 60 | 0–63 | /bit_01/lfo2_depth |
Performance MIDI
Notes, pitch bend and any CC are also available: /bit_01/note/on <note> <velocity>, /bit_01/cc/<number> <value>, /bit_01/pitchbend <0-16383>, /bit_01/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.
Frequently asked questions
Which MIDI CC controls the filter cutoff on the Crumar Bit 01?
CC 74 (0–63), named /bit_01/cutoff in SynthHub's map.
How many parameters of the Crumar Bit 01 can be controlled over MIDI?
SynthHub's map of the Crumar Bit 01 lists 55 MIDI CC parameters, each with its number, range and a readable name; the full chart is on this page.
Can an AI agent like Claude control the Crumar Bit 01?
Yes: SynthHub's hosted MCP server knows the Crumar Bit 01's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.