Chase Bliss CHOMPI TEMPO: MIDI CC, NRPN and OSC map¶
The Chase Bliss CHOMPI TEMPO as named OSC addresses — 14 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Chase Bliss CHOMPI TEMPO |
|---|---|
| Vendor | Chase Bliss |
| OSC prefix | /chompi_tempo |
| 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/chase-bliss/chompi_tempo.pencilresearch.fw-unknown.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/chase-bliss/chompi_tempo.pencilresearch.fw-unknown.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 chompi_tempo: ask “what can the Chase Bliss CHOMPI TEMPO do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (14)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/chompi_tempo/sampler/sample_record |
14 | 0–127 | continuous | Sampler | |
/chompi_tempo/sampler/sample_pitch_and_direction |
20 | 0–127 | continuous | Sampler | |
/chompi_tempo/sound_design/sample_start_point |
21 | 0–127 | continuous | Sound design | |
/chompi_tempo/sound_design/sample_end_point |
22 | 0–127 | continuous | Sound design | |
/chompi_tempo/sound_design/sample_volume |
20 | 0–127 | continuous | Sound design | |
/chompi_tempo/sound_design/envelope_attack |
21 | 0–127 | continuous | Sound design | |
/chompi_tempo/sound_design/envelope_release |
22 | 0–127 | continuous | Sound design | |
/chompi_tempo/sound_design/multi_mode_filter |
20 | 0–127 | continuous | Sound design | |
/chompi_tempo/effects/amount |
23 | 0–127 | continuous | Effects | |
/chompi_tempo/effects/send_wet_mix |
23 | 0–127 | continuous | Effects | |
/chompi_tempo/mixer/master_output_volume |
25 | 0–127 | continuous | Mixer | |
/chompi_tempo/mixer/input_gain |
25 | 0–127 | continuous | Mixer | |
/chompi_tempo/pattern_generator/tempo |
24 | 0–127 | continuous | Pattern generator | |
/chompi_tempo/pattern_generator/arpeggiator_sequencer_latch |
15 | 0–127 | continuous | Pattern generator |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /chompi_tempo/note/on <note> <velocity>, /chompi_tempo/cc/<number> <value>, /chompi_tempo/pitchbend <0-16383>, /chompi_tempo/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.