r/eurorack • u/insolent-construct • 7h ago
Alt. Firmwares Drizzlet alpha 2: community firmware for Mutable Instruments Beads (self-play on request, monophonic grains)
Drizzlet is a community firmware for Beads, built on the source Mutable Instruments released this month. Alpha 2 is out.
New in alpha 2: - Self-play on request: a new option stops Beads starting self-play by itself; with no inputs patched and FREEZE off, hold MEDIA for 1.5 s to start or stop it. - Monophonic grains: Mutable Instruments' previously unreleased mode, toggled with MEDIA+SEED; as Mutable Instruments noted, it works well only with the first two SHAPE envelopes (square and decay). - Bug fixes in the released source: less flash wear when an LFO or long gates drive FREEZE, a delay clock glitch, and a frozen-delay slice bug.
From alpha 1: - Output limiter option: Stock, Fast release or Off, set on a new options page (hold ASSIGN for 3 s). - Safer frozen-buffer saves: checked when loaded, and a save that was cut short is never restored. - Bug fixes in the released source: out-of-bounds and uninitialized reads (frozen delay, synth mode, CPU padding), and buffer saves that could fail or be marked complete when they weren't.
Crackle: at the settings people reported, our test module clicked on the 2021 and 2024 firmware but not on Drizzlet; the fix is in Mutable Instruments' released source.
Download and install notes: https://github.com/insolentconstruct/eurorack/releases/tag/drizzlet-2026.10.16
It's an alpha: read the README first and install at your own risk. Not a Mutable Instruments product.
Testing: 125 tests in 11 host test programs (693 assertions) covering 110 of 117 manual behaviours (3 only in part), 112 deliberate-fault mutations, 531 injected power-loss and flash-error points, byte-reproducible builds, emulator comparisons, and checks on a real module. Details: https://github.com/insolentconstruct/eurorack/blob/drizzlet/beads/build/TESTING.md
Next (Beta 1, tentative): buffer trim (Mutable Instruments' own disabled feature, made to survive a save), pitch quantization, Clouds-style diffusion and reverb if CPU allows, and, if headroom remains, Arbhar-style grain starts on recorded attacks. Roadmap, ranked by requests; comment on an issue to vote: https://github.com/insolentconstruct/eurorack/issues/32
Bug reports and requests: https://github.com/insolentconstruct/eurorack/issues
