Changelog

What changed in each version of BackBeat, the firmware and the website (the editor and the installer at https://forrestpanda.github.io/backbeat/). The version is on the device's boot screen and in SETUP > SYSTEM > ABOUT; the editor shows it next to the connect button.

0.9.2 (2026-10-30)

Firmware

Two kinds of fill. A section's fill of its own (extra bars, 1 to 4) now plays whole, from the next bar line, past the section's end if fewer bars are left, then the pattern from its top: press in the bar before you want it. A fill embedded in the pattern as marks works as before, from the press to the section's end, like an arranger keyboard's. Until now a fill of several bars ended on the section's last bar line, so a 2-bar fill asked in the last bar played its second bar only. FILL AT THE END is gone from the screen.
No stray hit at a bar line. A bar's first step that humanize or a nudge had pulled a few milliseconds early could play the bar before's content: a fill's second bar started with the fill's first step again (a second crash), the bar after a fill or a section change doubled a hit. Such a step now waits for the bar line.

Website

The player follows: a fill of its own whole from the next bar line.
Marks or a fill of its own, never both. Adding a fill to a section folds its fill marks and conditions in; with a fill the mark pens are off; a song file that has both is flagged, with Drop the marks beside Merge into the pattern.
Fill, Entry and Break = selected bars follow the section's division. The bars of a Guitar Pro file are 16ths; on a 1/8 or 1/4 section they kept 16 steps a bar, so the device and the player read them as twice or four times the bars. They are now put on the section's grid; hits that fall between its steps are dropped and listed (set a finer division first to keep them). Pattern = selected bars re-grids a kept fill, entry or break to the new 1/16 as well.
The grid's top row labels the columns (ENTRY, PATTERN, FILL, BREAK). Its cells over the pattern used to set a step's fill condition (F / N for every hit of the step); a mark belongs on the hit, with the mark pen.

0.9.1 (2026-10-30)

Firmware

Sixteen drum voices (twelve before): cymbal and tom tails ring on under busy fills instead of being cut for the next hit. Measured on the unit: the busiest song's worst audio block went from 40 % to 46 % of the time available. (Added to the 0.9.1 package on the evening of 2026-10-30; a 0.9.1 installed earlier that day has twelve.)
A new package identity, FM-1_988. 0.9's FM-1_985 was Loom FM-1's first, so the firmware hubs showed a BackBeat unit as Loom. The installer moves a unit from 985 to 988 as from any other firmware.
D#5 ends the song: the outro once, then the stop (the pedal's CC 22). The black keys are now fills, the break (C#4), the ending (D#5) and the tap tempo (F#5).
SEL opens SONGS. On SONGS it switches between USER and FACTORY. SAVE's tap does nothing now; held, it still saves the section into its song. SEL is no longer a fill on LIVE: the black keys and the pedal fill.
ALGORITHM scrolls the songs on LIVE: each detent loads the next or previous song of the page chosen on SONGS, USER or FACTORY, skipping empty slots.
The rescue key works. OCT- held while switching on brings up BACKBEAT USB RESCUE (SLOOP 2.6 never read the keys that early; fixed as SLOOP 2.7.2 did).
Cleaner fades. The master's rounding keeps the low bits of fading hits (SLOOP 2.8.4). Audible on the unit.
MIDI CLOCK OUT (SETUP > MIDI 2, KNOB 4): the clock, START and STOP on USB while the clock is INT.
MIDI clock in steadier: the tempo is the mean of the last 8 beats.
Knobs with a wide range accelerate when turned fast, a detent at a time when turned slowly.
LIVE's other layout (HOME tapped on LIVE, kept across power-offs): the bar of the section big, the beat beside it, the beat lights while nothing is cued, the next section in large letters when one is.
SECTIONS (EDIT tapped on LIVE): a song's shape on the device. Pick a section with KNOB 1 or the white keys, set its steps, division and the tempo, copy it after itself (SEL), move it (ENV / LFO), mark it the outro (OCT+), take it out (REC held). EDIT on an empty USER slot of SONGS makes a new song there.
The HIT knob on the drum grid: off, ghost, soft, norm, hard on one knob (KNOB 3), the ratchet on KNOB 4.
A DIV change keeps the hits on their beat: 1/16 to 1/8 drops the 16ths between, 1/8 to 1/16 puts an empty step between; the length in time is kept.
SAVE held saves the song's header too (tempo, kit, swing, drum level, reverb as the knobs left them), on LIVE as well as on EDIT.
The ending into an outro with an entry played the entry and stopped. Fixed: the entry, the outro once, the stop.
The battery: the core idles between screen frames, and the audio path sleeps after 3 s of silence while stopped. SETUP > SCREEN > SCREEN OFF turns the screen off after a time.
JAM removed: SLOOP's four project slots, the arrangement and the SAVE layer. Songs are the only thing on the device.
ABOUT names this repository, the version and the build date.
The crash screen shows the stack pointer and stays 10 s.
Smaller: the screens and menus compiled for size, 5 KB of flash back for the kit later.

Website

Merge into the pattern in the section editor: a fill bar is folded back into the pattern as "only in a fill" and "not in a fill" marks, so the pattern carries its own fill again.
A warning before a DIV change drops hits, with how many and into which division.
A DIV change re-grids the section in the editor as on the device.
The installer finds the update loader when Windows names it generically, by its handshake; the editor finds the FM-1's ports the same way.
The browser player ends an outro with an entry as the device does now.
The Jam tab is gone with the device's JAM.
A Cheat sheet tab in the editor: the FM-1 drawn with what every knob, button and key does, on LIVE and on the other screens; also a page of its own, and in the README.
This changelog, linked from the installer and the editor.

0.9 (2026-10-24)

The first release. A drummer for guitarists on the M-VAVE FM-1, drums only: a song as sections (intro, verse, chorus, bridge, solo, outro) switched live from a pedalboard over the TRS MIDI jack, with fills where asked; 16 songs of up to 16 sections, 16 factory grooves, the muldjord kit with four velocity layers; the LIVE, SONGS, EDIT and SETUP screens; the tap tempo key; the TRS to USB bridge for a tablet beside the pedalboard; the rescue screen. The website: the installer (and the way back to M-VAVE's firmware), the editor with the setlist, the section editor, the player, the Guitar Pro and MIDI import, backups, all usable without internet once opened.