v0.6.1

Fixes

• The power button acknowledges the tap instantly. The Micra reports a
  mode change a couple of seconds after the command, so tapping
  Standby/Turn on looked like nothing happened — and invited a second,
  state-undoing tap. The button now immediately disables and reads
  Working... until the machine reports the change (or the link drops, or
  8 seconds pass — it can never stay locked).

---

Apollo 2 firmware v0.6.1 — one flashable image per supported
Waveshare board (bootloader + partitions + app combined; flash at
offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

The flasher upgrades in place: your paired machine, Wi-Fi and
settings survive unless you explicitly choose to erase.

Command-line alternative — note the attached .bin is a full
image, so flashing it this way DOES clear saved settings:

esptool.py write_flash 0 apollo2-<board>-v0.6.1.bin

v0.6.0

Features

• Shot detect shows the real shot the moment it's detected. Detection
  confirms a few seconds after the first drip; until now the screen kept the
  generic live graph and the raw scale weight (cup included) for the whole
  shot, and only the end-of-shot review showed the aligned picture. Now, the
  instant a shot is detected, the graph switches to the shot plot back-filled
  from history — the ramp you already poured, from the estimated start — and
  the weight readout drops to shot grams, matching what a wired shot shows.
• No more accidental untracked shots. In Auto shot and Shot detect modes,
  flipping the paddle while no scale is connected now leaves the machine off
  and shows a message ("connect the scale or switch to Manual mode") instead
  of silently running a shot with no timing, tracking, or auto-stop. Waking a
  standby machine with a paddle flip is unaffected, and Manual mode plus the
  Flush button still cover deliberate untracked runs.
• Four new themes matching the Micra body colors. Like the existing
  Ferrari theme for the red machine, each runs its machine's paint through
  the whole scheme: Modena (yellow), Gulf (light blue, with the
  livery's orange as the heating color), Monaco (navy), and Ivory
  (creme). Settings → Device → Display → Theme.
• The ready chime carries better. The warm-up chime is now the "Buddy
  Holly" intro riff — all of it above 650 Hz, where the small speaker actually
  has output; the old arpeggio's low notes faded a room away.
• New "Detect lead-in" setting (Settings → Scale → Settings, 0–10 s,
  default 3 s): how far before the first drip your shot actually starts —
  the paddle flip, then preinfusion water working through the puck. It's
  added when back-dating a detected shot, so the timer and graph line up
  with the moment you flipped the paddle. Adjust it to match your machine's
  preinfusion setting as needed; detected shot durations now include it.

---

Apollo 2 firmware v0.6.0 — one flashable image per supported
Waveshare board (bootloader + partitions + app combined; flash at
offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

The flasher upgrades in place: your paired machine, Wi-Fi and
settings survive unless you explicitly choose to erase.

Command-line alternative — note the attached .bin is a full
image, so flashing it this way DOES clear saved settings:

esptool.py write_flash 0 apollo2-<board>-v0.6.0.bin

v0.5.3

Features

• A diagnostic log you can read after the fact. The device now keeps its
  recent diagnostics (the same messages the USB serial console prints, plus
  the system's own) in memory — 64 KB, typically hours of normal use — with
  each line stamped with the time, or seconds-since-boot until the clock is
  set. Read it on the device (Stats → Info → Diagnostic log) or, with
  Wi-Fi connected, as plain text at http://<device IP>/log (the web page's
  header has a Log link too). So when the paddle "did nothing" this
  morning, the evidence is still there after breakfast — no serial cable at
  the moment of failure required. The log doesn't survive a reboot.

Fixes

• The standby/turn-on button reflects the machine's state faster. The
  Micra's Bluetooth interface answers state queries with a lag right after a
  mode change, so the old "read back immediately after the command" approach
  reliably saw the previous state and the screen then waited out a slow 3 s
  poll — occasionally 4 s of nothing after a tap. The state poll now simply
  runs every second, so the button settles within about a second of the
  machine actually switching.

---

Apollo 2 firmware v0.5.3 — one flashable image per supported
Waveshare board (bootloader + partitions + app combined; flash at
offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

The flasher upgrades in place: your paired machine, Wi-Fi and
settings survive unless you explicitly choose to erase.

Command-line alternative — note the attached .bin is a full
image, so flashing it this way DOES clear saved settings:

esptool.py write_flash 0 apollo2-<board>-v0.5.3.bin

v0.5.2

Fixes

• Upgrading with the web flasher no longer wipes your settings. Installing
  a new version cleared the paired machine, the Wi-Fi credentials and every
  setting — even when "Erase device" was left unchecked — and there was no way
  to avoid it. The published image was a single blob covering the whole start
  of the flash, and the unused space it padded along the way happened to be the
  partition those settings live in, so writing it scrubbed them every time. The
  flasher now installs the same firmware in pieces that step around that
  partition, so an upgrade keeps everything and a deliberate "Erase device"
  still starts you clean. Flashing the attached .bin by hand with esptool
  is still a full image, and still clears settings — that's what it's for.

---

Apollo 2 firmware v0.5.2 — one flashable image per supported
Waveshare board (bootloader + partitions + app combined; flash at
offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

The flasher upgrades in place: your paired machine, Wi-Fi and
settings survive unless you explicitly choose to erase.

Command-line alternative — note the attached .bin is a full
image, so flashing it this way DOES clear saved settings:

esptool.py write_flash 0 apollo2-<board>-v0.5.2.bin

v0.5.1

Features

• History shows how each shot was run. Every recorded shot now carries a
  tag — a bolt for an Auto shot (the wired paddle stopped it at weight) or
  an eye for a Detected one (inferred from the scale alone) — in its own
  column in the shot list, on the shot card, and in the web app's table. Useful
  when you switch modes: an auto shot that missed its target and a detected one
  that was never going to stop at all are different stories, and the list used
  to tell them identically. Nothing to enable, and it applies to shots you have
  already recorded — the mode was being saved to the SD card all along, it just
  wasn't shown in the list.

Fixes

• The web page can no longer lag behind the firmware it ships with. The
  History page a board serves was baked in from a pre-built file kept in the
  repo, so it was only ever as current as the last time someone remembered to
  regenerate it by hand — a page could go out with an older version of itself
  than the firmware around it. It is now rebuilt from source as part of every
  firmware build and every release, so what you flash is what you get.

---

Apollo 2 firmware v0.5.1 — one flashable image per supported
Waveshare board (bootloader + partitions + app combined; flash at
offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

Command-line alternative:

esptool.py write_flash 0 apollo2-<board>-v0.5.1.bin

v0.5.0

Features

• The machine chimes when it's up to temperature (boards with a speaker —
  the 4.3C and the P4s). Switch it on, walk away, and a short rising chime
  tells you it's ready. It marks the end of a warm-up, so it sounds once
  and then stays quiet through all the small dips and reheats that hold
  temperature. It re-arms when a new warm-up is genuinely coming: the machine
  goes to standby (or off, or disconnects), the steam boiler is switched on or
  off, or a boiler falls 10 °C below its set point. With the steam boiler off
  the chime follows the coffee boiler alone; with it on, both have to be there.
  • Settings → Micra → Controls → Chime volume — Off / 25 / 50 / 75 / 100 %,
    default 50 %. Each tap plays a note at the new level, so you can set it by
    ear.

Improvements

• Settings → Micra → Settings is now Settings → Micra → Controls — a
  "Settings" page inside Settings read poorly, and the page is the machine's
  controls: brew temperature, steam boiler, wired paddle.
• Auto connect moved to Settings → Micra → Bluetooth, next to the saved
  machine it applies to, where a scan can no longer push it off the screen.

Fixes

• "Ready" is recognised properly again. The machine's own thermostat works
  to about 2 °C — a steam boiler set to 128 °C routinely settles at 127 °C and
  stops heating there — but the display insisted on 0.75 °C and so could show
  Heating indefinitely on a machine that was long since ready. Anything
  within 2 °C of the set point now counts as ready. (This is also what the new
  chime waits for, so on affected machines it would never have fired at all.)
• Opening a shot in the web app is fast — a fraction of a second instead of
  seven or eight, on the same data.
• Loading the web page no longer starves the device. Serving it briefly
  consumed most of the free internal memory, which showed up as display
  glitches and dropped Bluetooth traffic while a page was open.
• The display stops falling back to slow software copies on the P4 5" while
  Wi-Fi and Bluetooth are busy, so the interface keeps its frame rate during a
  web page load.
• A Micra sitting connected in standby no longer floods the serial log, which
  was costing enough time per frame to visibly stall the interface.

---

Apollo 2 firmware v0.5.0 — one flashable image per supported
Waveshare board (bootloader + partitions + app combined; flash at
offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

Command-line alternative:

esptool.py write_flash 0 apollo2-<board>-v0.5.0.bin

v0.4.1

A bug-fix release — no new features.

Fixes

• Acaia scales no longer get stuck "connected" with no weight. A link could
  sit connected and acking, and never deliver a reading. Several separate
  causes: liveness was judged on any Bluetooth traffic (which a scale keeps
  sending even when its weight events were never registered), the event
  registration itself was subtly malformed, incoming frames were mis-parsed the
  moment a fixed-length one arrived, and the handshake could be written before
  the scale was ready to hear it. The link now watches the weight stream
  specifically, re-handshakes when it stalls, and reconnects if it stays silent.
  Connecting is also faster to first reading.
• Acaia weights could read 100× high on scales that report their decimal
  place as 0.
• The graph smoothing setting now affects the live graph, not just the
  frozen shot review. Previously the sweep you watch while pulling a shot
  stayed unsmoothed at every setting. Strong is now a wider filter than
  before; Off, Light and Medium behave as they did.
• Shots freeze for review when the drips actually stop, instead of after a
  fixed 3 seconds — so the final weight is a settled one. This also makes the
  learned overshoot compensation more accurate, since that's the number it
  grades itself against.
• The stop hint (unwired mode) learns its own timing. It shares nothing
  with the wired auto-stop now, because it also has to cover your reaction time
  between seeing the hint and flipping the paddle; one shared value had the two
  modes pulling against each other on a wired machine.
• The 2-inch board no longer fails to start with "display init failed" — it
  was the only board taking its drawing buffer from the same scarce internal
  memory that Wi-Fi and Bluetooth need, and the request had grown too large to
  fit.
• An empty SD slot no longer floods the serial log. Boards without a card
  were logging a mount failure every 5 seconds, burying everything else.

---

Apollo 2 firmware v0.4.1 — one flashable image per supported
Waveshare board (bootloader + partitions + app combined; flash at
offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

Command-line alternative:

esptool.py write_flash 0 apollo2-<board>-v0.4.1.bin

v0.4.0

Features

• Backflush cleaning (boards with the paddle harness) — a guided,
  full-screen cleaning mode under Settings → Micra → Cleaning. Fit the
  blind filter, tap Go, and the device pulses the group 10 times with a
  live cycle counter and countdown. Cancel stops it and stays put,
  Back stops it and leaves, and flipping the physical paddle stops it too.
  • Pulse length follows your Auto flush setting. If your machine
    preinfuses, note that every pulse restarts preinfusion — set Auto flush
    long enough that each pulse outlasts it, or turn preinfusion off while
    backflushing.
• Flush button on Home (paddle boards, 4.3" and larger) — the Micra
  card's single button is now Standby | Flush, mirroring the scale card's
  Disconnect | Tare. Flush runs the group for a quick rinse; tap again to stop
  early.
• Delete individual shots — open a shot from Stats → History and tap
  the trash button. The shot is removed from the SD card and the headline
  stats recalculate without it, so dial-in and practice shots no longer skew
  your accuracy numbers.
• Auto flush is now Off / 3 / 6 / 9 / 15 s (was Off / 3 / 6). This single
  duration drives every timed run of the group: the post-shot auto-flush, the
  new Flush button, and each backflush pulse.

Improvements

• Settings → Device is split into Display, Time & date, and WiFi. The old
  single page had grown long enough that reading it meant scrolling past most
  of it; each sub-page now fits on screen.
• Setting the clock is faster — Time (hour, minute) and Date (month, day,
  year) are now dropdown pickers on one row each, replacing six separate
  −/+ rows. Timezone moved here from the WiFi page, where it never really
  belonged: it governs how every time is displayed, not just NTP.
• Flush settings live with cleaning — Auto flush and Flush delay moved to
  the new Micra → Cleaning page alongside Backflush, which also shortens
  the Micra settings page.
• The Micra button on Home shows the action, not the state. It reads
  Standby / Turn On / Connect and is simply disabled when unavailable; the
  connection state was already spelled out in the card's status line, and the
  old wording no longer fit beside Flush.
• The manual now says what it should about storage: a small SD card is more
  than enough. A shot is a few tens of KB, so even a 1 GB card holds years
  of espresso — and small cards are usually already FAT32.

---

Apollo 2 firmware v0.4.0 — one flashable image per supported
Waveshare board (bootloader + partitions + app combined; flash at
offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

Command-line alternative:

esptool.py write_flash 0 apollo2-<board>-v0.4.0.bin

v0.3.0

Apollo 2 firmware v0.3.0 — one flashable image per
supported Waveshare board (bootloader + partitions + app combined;
flash at offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

Command-line alternative:

esptool.py write_flash 0 apollo2-<board>-v0.3.0.bin

lmtoken-v0.1.0

LM Token fetches your La Marzocco machine's Bluetooth token: sign in with
your La Marzocco account, pick your machine, and copy the token. See the
repository README for what to do with it.

• LM Token app (no terminal needed): lmtoken-gui-<os>-<arch> — unzip and
  double-click. The macOS apps are signed and notarized.
• lmtoken CLI (for terminals and scripting): lmtoken-<os>-<arch> — unzip
  and run; prints the token to stdout.