Les

FM-1 firmware · v1.0-rc1

fm1-yoga

A guided relaxation companion for the end of a yoga class: drones, breath noise and singing bowls, with handpan and kalimba on the keys.

Made by
Michael Milz
Released
October 29, 2026
Install
On GitHub
Scan
Scanned, nothing harmful found · Oct 31 What we checked
Last checked
October 31, 2026

What fm1-yoga does

  • Guided relaxation programs hold a drone on 174, 396, 432 or 528 Hz with a slow theta to delta rhythm.
  • A second layer called the garden adds breathing pads, bell loops, a gliding bass, tape echo and plate reverb.
  • The 16 long keys play a handpan, kalimba, tongue drum, singing bowls or Koshi chimes with velocity.
  • Pick a program with SELECT, a length with PRESETS, ISO for speakers or BIN for headphones, then press PLAY.
  • Eleven small keys softly mute drone, breath, bowls, space, pads, bells, bass, echo or everything at once.
  • Every start randomizes phase lengths, rhythms, timbres and the garden recipe, so no two runs sound alike.
  • SAVE keeps all settings permanently and stays lit while something is still unsaved.
  • Over USB the FM-1 works as an audio device, mixing in music from a computer and recording its sound.

Its modes

HOME
Set the KLANG and GARTEN volumes with K1 and K2 and watch the breathing ring, phase and remaining time.
KLANG
Shape the yoga layer: drone, breath noise, bowls and space, each with its own subpage of details.
GARTEN
Adjust the musical layer of pads, bells, bass and echo and their subpages.
INSTRUMENT
Choose the keyboard instrument, its scale, the Ding note, tone and reverb.
SETUP
Set LED breathing, display dimming, language and the silent beat.

What Les checked

fm1-yoga v1.0-rc1Scanned 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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