Beetlecrab.audio Tempera: MIDI CC, NRPN and OSC map¶
The Beetlecrab.audio Tempera as named OSC addresses — 104 CC, 4 SysEx commands — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Beetlecrab.audio Tempera |
|---|---|
| Vendor | Beetlecrab.audio |
| OSC prefix | /tempera |
| Source | 📘 From the manufacturer's documentation |
| Firmware | 2.2 |
| Revision | firmware 2.2 (2026-01-14) |
| Upstream | vendor-doc |
| Driver file | devices/beetlecrab-audio/tempera.vendor.fw-2.2.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.
Other variants of this device: tempera.electra-community.fw-unknown, tempera.pencilresearch.fw-unknown.
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/beetlecrab-audio/tempera.vendor.fw-2.2.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 tempera: ask “what can the Beetlecrab.audio Tempera do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (104)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/tempera/modwheel |
1 | 0–127 | continuous | Global | |
/tempera/emitters/active |
10 | 0–3 | continuous | Emitters — Global | |
/tempera/emitters/place |
11 | 0–63 | continuous | Emitters — Global | |
/tempera/emitters/remove |
12 | 0–64 | continuous | Emitters — Global | |
/tempera/adsr/attack |
13 | 0–127 | continuous | ADSR | |
/tempera/adsr/decay |
14 | 0–127 | continuous | ADSR | |
/tempera/adsr/sustain |
15 | 0–127 | continuous | ADSR | |
/tempera/adsr/release |
16 | 0–127 | continuous | ADSR | |
/tempera/reverb/size |
17 | 0–127 | continuous | Reverb | |
/tempera/reverb/color |
18 | 0–127 | continuous | Reverb | |
/tempera/reverb/mix |
19 | 0–127 | continuous | Reverb | |
/tempera/delay/feedback |
20 | 0–127 | continuous | Delay | |
/tempera/delay/time |
21 | 0–127 | continuous | Delay | |
/tempera/delay/color |
22 | 0–127 | continuous | Delay | |
/tempera/delay/mix |
23 | 0–127 | continuous | Delay | |
/tempera/filter/cutoff |
24 | 0–127 | continuous | Filter | |
/tempera/filter/resonance |
25 | 0–127 | continuous | Filter | |
/tempera/chorus/depth |
26 | 0–127 | continuous | Chorus | |
/tempera/chorus/speed |
27 | 0–127 | continuous | Chorus | |
/tempera/chorus/flange |
28 | 0–127 | continuous | Chorus | |
/tempera/chorus/mix |
29 | 0–127 | continuous | Chorus | |
/tempera/tracks/1/volume |
30 | 0–127 | continuous | Tracks | |
/tempera/tracks/2/volume |
31 | 0–127 | continuous | Tracks | |
/tempera/tracks/3/volume |
33 | 0–127 | continuous | Tracks | |
/tempera/tracks/4/volume |
34 | 0–127 | continuous | Tracks | |
/tempera/tracks/5/volume |
35 | 0–127 | continuous | Tracks | |
/tempera/tracks/6/volume |
36 | 0–127 | continuous | Tracks | |
/tempera/tracks/7/volume |
37 | 0–127 | continuous | Tracks | |
/tempera/tracks/8/volume |
39 | 0–127 | continuous | Tracks | |
/tempera/emitter_1/volume |
40 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/grain_length_cell |
41 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/grain_length_note |
42 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/grain_density |
43 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/grain_shape |
44 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/grain_shape_attack |
45 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/grain_pan |
46 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/grain_tune_spread |
47 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/octave |
48 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/relative_x |
49 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/relative_y |
50 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/spray_x |
51 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/spray_y |
52 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/tone_filter_width |
53 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/tone_filter_center |
54 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_1/effects_send |
55 | 0–127 | continuous | Emitter 1 | |
/tempera/emitter_2/volume |
56 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/grain_length_cell |
57 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/grain_length_note |
58 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/grain_density |
59 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/grain_shape |
60 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/grain_shape_attack |
61 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/grain_pan |
62 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/grain_tune_spread |
63 | 0–127 | continuous | Emitter 2 | |
/tempera/damper |
64 | 0–127 | continuous | Global | |
/tempera/emitter_2/octave |
65 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/relative_x |
67 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/relative_y |
68 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/spray_x |
69 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/spray_y |
70 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/tone_filter_width |
72 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/tone_filter_center |
73 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_2/effects_send |
75 | 0–127 | continuous | Emitter 2 | |
/tempera/emitter_3/volume |
76 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/grain_length_cell |
77 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/grain_length_note |
78 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/grain_density |
79 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/grain_shape |
80 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/grain_shape_attack |
81 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/grain_pan |
82 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/grain_tune_spread |
83 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/octave |
84 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/relative_x |
85 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/relative_y |
86 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/spray_x |
87 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/spray_y |
88 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/tone_filter_width |
89 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/tone_filter_center |
90 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_3/effects_send |
91 | 0–127 | continuous | Emitter 3 | |
/tempera/emitter_4/volume |
92 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/grain_length_cell |
93 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/grain_length_note |
94 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/grain_density |
95 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/grain_shape |
96 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/grain_shape_attack |
97 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/grain_pan |
98 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/grain_tune_spread |
99 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/octave |
102 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/relative_x |
103 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/relative_y |
104 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/spray_x |
105 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/spray_y |
106 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/tone_filter_width |
107 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/tone_filter_center |
108 | 0–127 | continuous | Emitter 4 | |
/tempera/emitter_4/effects_send |
109 | 0–127 | continuous | Emitter 4 | |
/tempera/modulators/1/size |
110 | 0–127 | continuous | Modulators | |
/tempera/modulators/2/size |
111 | 0–127 | continuous | Modulators | |
/tempera/modulators/3/size |
112 | 0–127 | continuous | Modulators | |
/tempera/modulators/4/size |
113 | 0–127 | continuous | Modulators | |
/tempera/modulators/5/size |
114 | 0–127 | continuous | Modulators | |
/tempera/modulators/6/size |
115 | 0–127 | continuous | Modulators | |
/tempera/modulators/7/size |
116 | 0–127 | continuous | Modulators | |
/tempera/modulators/8/size |
117 | 0–127 | continuous | Modulators | |
/tempera/modulators/9/size |
118 | 0–127 | continuous | Modulators | |
/tempera/modulators/10/size |
119 | 0–127 | continuous | Modulators |
SysEx commands (4)¶
| OSC address | Arguments |
|---|---|
/tempera/canvas/load |
program: u7 |
/tempera/emitters/place_by_cell |
note: u7, velocity: u7 |
/tempera/emitters/select_active_by_note |
note: u7 |
/tempera/tracks/arm |
note: u7 |
Limitations¶
CC and Note/PC only, as documented by the vendor. The vendor doc does not expose NRPN or SysEx parameters; preset management and bulk dump are not covered. To extend, sniff the device or wait for an updated implementation chart.