# FortySevenEffects/arduino_midi_library

MIDI for Arduino

Repository: https://github.com/FortySevenEffects/arduino_midi_library
Canonical: https://ross.abutalabs.com/products/arduino_midi_library
Language: C++
License: MIT
License Family: permissive
Topics: arduino-midi-library, midi, arduino
Last push: 2023-10-16T18:17:54+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5216, "days_push": 1052, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1804, forks 271 (observed 2026-08-28T04:05:38.843300+00:00)

## What it is
A C++ library that adds MIDI input/output communication to Arduino boards, supporting all MIDI message types including System messages, SysEx, and Clock. It supports multiple transports (serial, USB, Bluetooth, IP/AppleMIDI) and features callbacks, software thru with filtering, and multiple MIDI interfaces.

## Use cases
- send and receive MIDI messages on an Arduino
- build a MIDI controller with Arduino
- read incoming MIDI notes from a keyboard
- create a MIDI merger or splitter
- send SysEx messages over MIDI
- use MIDI over USB or Bluetooth with Arduino
- handle MIDI input with callbacks

## When to choose
- you need MIDI I/O on any Arduino or AVR-based board
- you want support for all MIDI message types including SysEx and clock
- you need multiple transports like serial, USB, Bluetooth, or IP
- you want configurable, template-based settings and multiple MIDI interfaces

## When to avoid
- you need MIDI on a non-Arduino platform
- you need USB MIDI host features moved to the separate Arduino-USB-MIDI repository
- you need high-level music sequencing rather than raw MIDI messaging

## Facets
- artifact type: library
- maturity: stable
- function: sdk, parser, developer-tools
- domain: embedded-systems, hardware, developer-tools
- platform: embedded, iot, cpp
- tags: midi, arduino, serial-communication, sysex, hardware-interfacing, audio

## Member repositories
- FortySevenEffects/arduino_midi_library (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:38.843300+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:21:47.814038+00:00, confidence not recorded.
  - readme: https://github.com/FortySevenEffects/arduino_midi_library (fetched 2026-08-28T04:05:38.843300+00:00, sha 8305b10f5eeb)
- Data as of 2026-08-30T08:39:29.467469+00:00.