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OB-1 0.6

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@simonjohansson simonjohansson released this 24 Oct 20:50
ob1-v0.6
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OB-1 0.6 adds Digitone mk1 / Digitone Keys support, contributed by x2k77m1, alongside the existing Digitakt mk1 machine.

What's new

  • OB-1 on Digitone mk1 / Keys, OS 1.44. Two VCOs with saw/pulse waveforms and sub-octaves, hard sync, cross modulation and noise feed the Digitone's own filter, AMP envelope, mixer and effects.
  • Fifteen controls across two SYN pages. SYN1 provides mixer/routing; SYN2 provides independent coarse/fine tuning, waveform family and shape for both oscillators. Custom page graphics, parameter locks, MIDI CCs and LFO modulation are supported. FUNC+turn restores OB-1 defaults or a held step's lock.
  • Mono playing on each Digitone track. New notes take priority, with a retained pair of oscillators and a short handover crossfade. Releasing the newest note returns to the newest held note while its stock voice remains available.
  • Both device packages are version 0.6. The Digitakt sound engine and control layout are unchanged from 0.5.

Downloads and installation

Download Device Required stock OS Required companion mods
ob1-0.6-os1.54.elemod Digitakt mk1 1.54 Core and machine-pages
ob1-dn-0.6.elemod Digitone mk1 / Keys 1.44 Core for Digitone and machines

Use Elekloader to combine the package and companion mods with your own matching stock OS. These downloads are mod packages, not complete firmware images. Digitakt OS 1.53 packages are not included in this release.

On Digitone, reselect OB-1 after updating from a development build; sounds saved with earlier development control maps may need their controls reassigned. Digitakt 0.5 sounds retain their parameter meanings.

Known limits

  • Leave Digitone voices dynamically allocated for held-note return. Locking a track to one voice, or having an earlier note's voice stolen, can prevent return to that note.
  • Releasing several held Digitone notes together can shorten the release tail depending on voice allocation. A fix is deferred to a follow-up.
  • Digitone turn popups and LFO destination lists retain the borrowed FM parameter names.

Verification

Both packages passed stock-firmware lint/link checks, and both complete firmware images were built and verified locally. The host suite passed, including 49 regression tests and 42 Digitone adapter checks. Compiled Digitakt OS 1.54 firmware MIDI checks passed for all fifteen controls, defaults, note on/off, channel isolation and CC 9 reset. The DSP reference comparison remains at 307/311 passing, with the four documented XMOD mismatches unchanged.

Hosted CI is not green: its firmware build lacks the local Digitone OS 1.44 input, and the reference step reports the same four XMOD mismatches. The successful firmware builds and MIDI check above were run locally.

No fresh physical-device testing was performed for 0.6. The Digitone port's contributor-reported hardware checks are recorded in the support PR.

Full changelog: ob1-v0.5...ob1-v0.6

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