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Simple MIDI

Firmware for Workshop System Computer (Music Thing Modular)

USB MIDI interface and Computer calibrator.

by Tom Whitwell, Chris Johnson

ActiveSource: openMIT
Distribution
Prebuilt image you flash yourself
Source
github.com https://github.com/TomWhitwell/Workshop_Computer/tree/main/releases/00_Simple_MIDI
Homepage
computer.musicthing.co.uk https://computer.musicthing.co.uk/programs/00-simple-midi/
Synced from
upstream metadata, raw.githubusercontent.com https://raw.githubusercontent.com/TomWhitwell/Workshop_Computer/main/releases/00_Simple_MIDI/info.yaml. Corrections belong upstream.

Description

Simple MIDI turns the Computer into a two-channel USB MIDI interface over the front USB-C connection. Incoming MIDI notes, pitch bend and CC 42 become calibrated pitch CV, gates and CV; the knobs, switch and inputs are sent back as MIDI CCs. It works as a MIDI device (connected to a computer) or as a MIDI host (connected to a MIDI controller).

It is also used, with a web page, to calibrate the Computer's precision CV outputs and its audio and CV inputs. The calibration is saved on the Computer and used by other cards.

Install notes

Copy the UF2 onto the Computer's program card (RP2040 bootloader drive).

Version history

Simple MIDI version history
VersionDateNotes
0.7.02026-10-02Version and date from the card's info.yaml.

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