Tasty Chips GR-1: MIDI CC, NRPN and OSC map¶
The Tasty Chips GR-1 as named OSC addresses — 37 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Tasty Chips GR-1 |
|---|---|
| Vendor | Tasty Chips |
| OSC prefix | /gr_1 |
| Source | 📦 Derived from MIDI Guide (community CC/NRPN data) |
| Firmware | unknown |
| Revision | per pencilresearch canonical CSV |
| Upstream | pencilresearch |
| Data licence | CC-BY-SA-4.0 — MIDI Guide (https://midi.guide) by Pencil Research and contributors |
| Driver file | devices/tasty-chips/gr_1.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/tasty-chips/gr_1.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 gr_1: ask “what can the Tasty Chips GR-1 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (37)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/gr_1/general/modulation_wheel |
1 | 0–127 | continuous | General | |
/gr_1/general/position |
2 | 0–127 | continuous | General | |
/gr_1/general/density |
3 | 0–127 | continuous | General | |
/gr_1/general/grain_size |
4 | 0–127 | continuous | General | |
/gr_1/general/spray |
5 | 0–127 | continuous | General | |
/gr_1/general/nrpn_value_msb |
6 | 0–127 | continuous | General | |
/gr_1/general/tune |
7 | 0–127 | continuous | General | |
/gr_1/filter/cutoff |
8 | 0–127 | continuous | Filter | |
/gr_1/filter/resonance |
9 | 0–127 | continuous | Filter | |
/gr_1/general/panspray |
10 | 0–127 | continuous | General | |
/gr_1/general/scan |
11 | 0–127 | continuous | General | |
/gr_1/window/sides |
12 | 0–127 | continuous | Window | |
/gr_1/window/title |
13 | 0–127 | continuous | Window | |
/gr_1/window/curve |
14 | 0–127 | continuous | Window | |
/gr_1/lfo_1/waveform |
15 | 0–127 | continuous | LFO 1 | |
/gr_1/lfo_2/waveform |
16 | 0–127 | continuous | LFO 2 | |
/gr_1/lfo_1/frequency |
17 | 0–127 | continuous | LFO 1 | |
/gr_1/lfo_1/amount |
18 | 0–127 | continuous | LFO 1 | |
/gr_1/lfo_2/frequency |
19 | 0–127 | continuous | LFO 2 | |
/gr_1/lfo_2/amount |
20 | 0–127 | continuous | LFO 2 | |
/gr_1/cv_1/amount |
21 | 0–127 | continuous | CV 1 | |
/gr_1/cv_2/amount |
22 | 0–127 | continuous | CV 2 | |
/gr_1/envelope/attack_time |
23 | 0–127 | continuous | Envelope | |
/gr_1/envelope/decay_time |
24 | 0–127 | continuous | Envelope | |
/gr_1/envelope/sustain_amplitude |
25 | 0–127 | continuous | Envelope | |
/gr_1/envelope/release_time |
26 | 0–127 | continuous | Envelope | |
/gr_1/lfo_1/destination |
27 | 0–127 | continuous | LFO 1 | |
/gr_1/lfo_2/destination |
28 | 0–127 | continuous | LFO 2 | |
/gr_1/cv_1/destination |
29 | 0–127 | continuous | CV 1 | |
/gr_1/cv_2/destination |
30 | 0–127 | continuous | CV 2 | |
/gr_1/lfo_1/key_sync |
31 | 0–127 | continuous | LFO 1 | |
/gr_1/lfo_2/key_sync |
32 | 0–127 | continuous | LFO 2 | |
/gr_1/general/scan_key_sync |
33 | 0–127 | continuous | General | |
/gr_1/general/patch_volume |
36 | 0–127 | continuous | General | |
/gr_1/general/resample_antialias_on_off |
37 | 0–127 | continuous | General | |
/gr_1/general/master_volume |
39 | 0–127 | continuous | General | |
/gr_1/general/pitch_bend_range |
60 | 0–127 | continuous | General |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /gr_1/note/on <note> <velocity>, /gr_1/cc/<number> <value>, /gr_1/pitchbend <0-16383>, /gr_1/program_change <n>.
Limitations¶
CC/NRPN only. SysEx (preset management, display control, bulk dump/load, vendor-proprietary opcodes) is NOT covered by pencilresearch. To extend this device with SysEx, sniff the vendor editor, add `sysex.header/footer` + `commands` blocks, and use `update_device.md` PR template.