Les

FM-1 firmware · v0.2.0-beta

fm1-glitch

A microsound drum machine of synthesized clicks, crunches and tiny loops that mutate from bar to bar, with stutter and reverse on the keys.

Made by
ttreu (subcity)
Released
October 29, 2026
Install
On GitHub
Scan
Not scanned yet What we checked
Last checked
October 31, 2026

What fm1-glitch does

  • Twenty-seven slots, one per key, play synthesized clicks, rasps, crunches, noise bursts, sweeps, micro kicks, pops, short loops and dropouts.
  • One slot is a classic hi-hat, and PITCH, DECAY, COLOR and RANDOM shape every other source per hit.
  • The polymetric step sequencer gives each slot up to 64 steps with its own length and rate, so loops drift apart.
  • Hold SEQ and press white keys to enter steps, pressing again for ratchets of two, three or four hits.
  • Press ARP for a completely new random beat, or hold ARP and a key for a new sound and line on one slot.
  • MUTATE changes the loop a little every bar, REC returns to the stored pattern, and SAVE keeps the mutated version.
  • Hold FX with a white key for sixteen stutter, freeze, bitcrush and sweep effects, or a black key for eleven punch-in effects.
  • SAVE stores the live loop, mutes, settings and scatter seed into sixteen patterns on the device.

Its modes

HOME
Set tempo, swing, mutate and level, and watch the CPU figure.
SOUND
Choose a slot's source and set its pitch, decay and color.
RHYTHM
Set probability, ratchet, micro timing and scatter for the slot.
LOOP
Set the slot's step length, rate, random amount and level.
SPACE
Pick the pan mode and pan, and send the slot to tape echo and shimmer.
REVERSE
Set the chance that the slot's hits play backwards and swell up.
KIT
Adjust accent, flam, hiss and the density of random beats.

What Les checked

fm1-glitch v0.2.0-beta

StatusNot scanned yet

Its file didn't open cleanly as an FM-1 firmware, so we didn't scan it further.

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