Les

FM-1 firmware · v0.1.0-preview

fm1-synthdef

A programmable two-voice instrument that runs SuperCollider synth patches you write in a browser editor and send over USB, with eight saved slots.

Made by
little-scale
Released
October 28, 2026
Install
On GitHub
Scan
Scanned, nothing harmful found · Oct 31 What we checked
Last checked
October 31, 2026

What fm1-synthdef does

  • Write a patch in the local browser editor, compile it with SuperCollider on your Mac, send it over USB and play it.
  • The device runs the compiled graph using 53 supported UGen types, covering oscillators, filters, noise, envelopes, resonators and delay, comb and allpass filters.
  • Two voices sound at once with velocity, pitch, gate and live control, with voice stealing when you keep playing.
  • Eight synth slots hold your patches, and slot 0 is a permanent stereo master effect that keeps decaying through preset changes.
  • Four shared knobs drive whichever live controls a patch names, so knobs can shape the synth and the echo together.
  • The example bank gives you a master echo, keys, five-harmonic additive, triple saw and two-op FM.
  • The editor keeps a local bank that survives a server restart, reads patches back from the device, and the FM-1 carries USB audio and MIDI.

What Les checked

fm1-synthdef v0.1.0-previewScanned October 31, 2026

What we checked for

  • The file is exactly the one its author published
  • It's the same file we saw when this release first came out
  • It opens cleanly as an FM-1 firmware, nothing damaged
  • It doesn't show up on your computer as a keyboard, mouse or other input device
  • It doesn't show up as a USB drive or network adapter
  • Its text mentions no computer command tools, like PowerShell, Terminal or a download command

What we found

  • MIDI and audio, as expected

StatusScanned, nothing harmful found

Les scans every firmware here whose file is public, and shows what it checked and what it found. A scan lowers the risk; it can't rule it out. This firmware is made by its author, not by Les or M-VAVE. Back up first, and install at your own risk. How Les scans firmware

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