April OS
Sampling groovebox on a Felucca base: 32 sample slots of 3 seconds, 8-track sequencer, slice and loop editor, recording through a computer or phone microphone.
by beashoko
Brick risk. Flashing this carries a known, documented risk of damaging the device.
- Distribution
- Browser installer (WebMIDI / WebUSB)
- License notes
- LICENSE file is MIT, but the README states Felucca-derived code stays GPL-3.0-only. Firmware source is not in the repository.
- Source
- github.com https://github.com/beashoko/april-os
- Homepage
- beashoko.github.io https://beashoko.github.io/april-os/
- sampler
- sequencer
Description
The repository holds the installer page and assets, not the firmware's source, so this is listed as binary-only. Its README says Felucca-derived code must remain GPL-3.0-only when distributed, while the repository's own LICENSE file is MIT.
Install notes
Browser WebMIDI installer from the project page. Beta per the fm1-editor.com directory.
Version history
| Version | Date | Notes |
|---|---|---|
| 1.1 | 2026-10-10 | Beta. Version and date from the fm1-editor.com/firmware hub; repository has no release tags (last commit 2026-10-10). |