Two lazy-load bugs caused greenlet_spawn errors in the RFID auto-assign
flow:
1. create_spool_from_tray set spool.k_profiles=[] AFTER db.flush(),
but assigning to a relationship on a persistent object triggers a
lazy load (SQLAlchemy loads the current collection before replacing).
Moved initialization to BEFORE db.add().
2. spool.assignments was never initialized or eagerly loaded, so
db.add(SpoolAssignment) triggered a back_populates lazy load
outside the async greenlet. Added assignments=[] in create and
selectinload(Spool.assignments) in get_spool_by_tag.
Also added exc_info=True to error handlers for full tracebacks, and
19 new tests including greenlet regression tests that reproduce the
exact failure.
enum.StrEnum was added in Python 3.11, but the documented minimum is
3.10. Add a compatibility shim in backend/app/core/compat.py that falls
back to (str, Enum) on older versions. Updated all 5 import sites and
lowered pyproject.toml target-version to py310.
Bambu printers only support plain RSA key exchange ciphers
(AES256-GCM-SHA384, AES128-GCM-SHA256), but Python's OpenSSL 3.x
defaults exclude them in favor of forward-secrecy (ECDHE/DHE) only.
Add the RSA ciphers to the client SSL context so the TLS proxy can
connect to the printer's bind port (3002).
When the print queue scheduler finds pending items but doesn't start
any, there was no logging to explain why. Added INFO-level summary
after each queue check showing skip reasons (manual_start,
scheduled_future) and busy printer details (state, connected,
plate_cleared). Also added DEBUG-level logging in _is_printer_idle()
for the specific condition that failed.
- Add 12 backend integration tests for AMS labels API (GET/PUT/DELETE,
serial resolution, synthetic key fallback, whitespace handling, validation)
- Add 10 frontend tests for FilamentSlotCircle component (rendering,
border styles, background colors, text contrast inversion)
- Fix ruff W293 trailing whitespace in inventory.py from contributor fix
- Add ams_label model import to test conftest.py
- Update CHANGELOG, README, website features page, and wiki AMS docs
* AMS Labels addition to PrintersPage
* Added database reinitialization for schema migrations on database restore
* Bug fixes and AMS Label persistence updates
* Update database.py to resolve PR conflicts
* PR Comment Resolution
* Resolve conflicts in database.py for PR#570
* Updates to address PR#570 additional comments
* Optimize visibility handling for popup component
* Improve serial key handling in printers.py
Refactor serial key assignment to handle empty AMS serial gracefully.
* Implement error handling in serial number mapping
Add error handling for serial number mapping.
* Add migration to drop old ams_labels table
---------
Co-authored-by: MartinNYHC <mz@v8w.de>
On Windows, process.terminate() on ffmpeg broadcasts CTRL_C_EVENT to
the entire process group, causing uvicorn to shut down. Spawn ffmpeg
with CREATE_NEW_PROCESS_GROUP so cleanup doesn't affect the server.
Floating bug report button submits issues via bambuddy.cool relay (no GitHub
token needed locally). Collects 30s debug logs with printer push_all, sanitizes
all sensitive data, uploads logs as files to GitHub. Screenshot upload/paste/drag
with JPEG compression. Translated into all 7 languages. Includes 21 tests.
Parse home_flag bit 18 (0x00040000) from MQTT to detect ethernet
connections. When set, the printer card shows a green "Ethernet"
badge with a cable icon instead of WiFi signal strength in dBm.
The printer info modal also displays "Ethernet" instead of WiFi
signal details.
The firmware check only mapped display names (e.g., "H2D Pro") to
API keys but not raw SSDP device codes (e.g., "O1E", "O2D"). If a
printer's model was stored as the raw SSDP code, the firmware check
either failed or matched the wrong model — H2D Pro matched against
H2D firmware, showing a false update-available badge.
Add all known SSDP device codes to MODEL_TO_API_KEY so firmware
versions resolve correctly regardless of how the model was stored.
The previous fix only filtered status codes (< 0x4000) from the
print_error field. Firmware can also send the same false positive
through the hms array in MQTT, which had no such filter. Apply the
same < 0x4000 check to the HMS parser so status/phase indicators
are skipped regardless of which MQTT field carries them.
The isSlicedFile() check only matched .gcode or .gcode.3mf extensions,
so archives from .3mf prints (the standard Bambu slicer output) showed
a "SOURCE" badge instead of "GCODE". Since .3mf can be either sliced or
a raw CAD export, now checks the archive's total_layers and
print_time_seconds metadata to distinguish them. Also passes the
original filename when creating archives from file manager prints.
FTP upload: reduce chunk size from 1MB to 64KB for smooth progress bar
updates (~1s intervals instead of 20+ second gaps). Skip voidresp() for
all printer models — H2D delays the 226 response by 30+ seconds after
data transfer, causing a hang at 100%. Add transfer speed and TLS
handshake timing to logs for diagnosing slow connections.
Print/Schedule modal: widen from max-w-lg (512px) to max-w-2xl (672px)
to accommodate long filament profile names like "PLA Support for PETG
PETG Basic @Bambu Lab H2D 0.4 nozzle".
Profiles like "PLA Support for PETG PETG Basic @Bambu Lab H2D" have
filament_type PETG, but both the frontend and backend name parsers
found "PLA" first (iterating material types in order). The MQTT command
sent tray_type=PLA and tray_info_idx=GFL99 (PLA generic), so the
slicer displayed PLA instead of PETG.
- Frontend parsePresetName(): detect "X Support for Y" pattern, extract
material after "Support for"
- Frontend ConfigureAmsSlotModal: prefer corrected parsed material over
stored localPreset.filament_type for tray_type, tray_info_idx, and
temperature fallback
- Backend _parse_material_from_name(): same "Support for" handling for
future profile imports
- Backend assign_spool: prioritize spool.material over lp.filament_type
for generic filament ID lookup
The slicer_binary_path key was left in the settings table from earlier
slicer integration research but is no longer referenced anywhere in the
codebase. Add a startup migration step that deletes orphaned settings
keys so they don't persist in backups.
* feat(queue): show spool grams left in filament slot mapping
* Bumped version
* Add SpoolBuddy AMS slot config, external slots, and dashboard redesign
- AMS page: external spool slots (Ext/Ext-L/Ext-R), click-to-configure
modal on all slots, temperature/humidity threshold-colored indicators,
nozzle L/R badges for dual-nozzle printers, compact AMS-HT layout
- Dashboard: two-column layout with device status + printers list (left)
and current spool card (right), state-colored scale/NFC icons, dashed
border card styling
- Daemon: suppress redundant scale reports (±2g threshold + stability
state change detection) to prevent weight display bouncing
- TopBar: auto-select online printers only, SpoolBuddy logo
* Fix SpoolBuddy daemon crash when read_tag module is missing
NFCReader.__init__ imported read_tag and instantiated PN5180() outside
the try/except block, so a missing module crashed the entire daemon.
Moved the import inside the existing try/except so the daemon gracefully
skips NFC polling — matching the scale reader's existing behavior.
* Fix SpoolBuddy daemon failing to import hardware drivers
The daemon imports read_tag and scale_diag as bare modules, but they
live in spoolbuddy/scripts/ which isn't on sys.path when systemd runs
the daemon. Added scripts/ to sys.path at startup, resolved relative
to the module file. Also moved the read_tag import inside NFCReader's
try/except (was crashing the daemon instead of skipping gracefully)
and demoted hardware-not-available messages from ERROR to INFO.
* Increase scale moving average window to reduce weight bouncing
5 samples at 100ms (500ms window) wasn't enough to smooth NAU7802 ADC
noise — the averaged value still varied by >2g between 1s report
intervals, and the stability state kept flipping, triggering a report
every cycle. Increased to 20 samples (2s window) so noise is smoothed
before reaching the reporting layer.
* Remove stability flipping as scale report trigger
When ADC noise kept the spread hovering around the 2g stability
threshold, the stable flag toggled every cycle, forcing a report with
a slightly different weight each time. Now only actual weight changes
of >=2g trigger reports. The stable flag is still included in each
report for consumers that need it.
* Fix formatting of option elements in FilamentMapping
* Make low stock threshold editable
* Add new filter for low spools
* Update bug report template to require additional fields
* Added toast for invalid imputs with locales, updated inputb field restrictions
* Minor Spoolbuddy frontend improvements
* Updated test_backend.sh
* Updated Spoolbuddy install script to strip down Raspbian
* Updated Spoolbuddy install script
* Add API key auth support to /auth/me for SpoolBuddy kiosk
When Bambuddy auth is enabled, the SpoolBuddy kiosk gets redirected to
the login page because ProtectedRoute requires a user from GET /auth/me,
which only handled JWT tokens. The kiosk daemon already has an API key
but couldn't use it to satisfy the frontend auth check.
- Backend: /auth/me now accepts API keys (Bearer bb_xxx or X-API-Key)
and returns a synthetic admin UserResponse with all permissions
- Frontend: AuthContext reads ?token= from URL on first load, stores in
localStorage, and strips from URL (prevents history/referrer leakage)
- Install script: kiosk URL now includes ?token=${API_KEY}
- Tests: 3 new integration tests (Bearer API key, X-API-Key header,
invalid key rejection)
* SpoolBuddy touch-friendly UI overhaul for 1024x600 kiosk display
Enlarge all interactive elements across 9 SpoolBuddy components to meet
44px minimum tap targets on the RPi touchscreen. Increase nav icons
(20→24px), labels (10→12px), bar heights, section headers, printer
buttons, spool visualizations, fill bars, and status indicators.
Compact the dashboard stats bar and remove the printers card. Add
fullScreen prop to ConfigureAmsSlotModal with two-column layout
(filament list left, K-profile + color right) to eliminate scrolling.
* Minor changes, CSS fixes
* Refactor usageFilter state to remove 'lowstock' option for clarity
* Move var saving to API, add test coverage
* fix: threshold validation and cleanup
* Change test input from '150' to '0'
---------
Co-authored-by: tridev <c.tripod@gmx.ch>
Co-authored-by: MartinNYHC <mz@v8w.de>
Some firmware sends non-zero print_error values (e.g. 0x03000002 →
0300_0002) during normal printing as status/phase indicators. The
parser treated any non-zero value as a real error, triggering
notifications. All known real errors have codes >= 0x4000 (fatal,
warning, prompt ranges). Now skips print_error values where the
low 16 bits are below 0x4000.
Also fix K-profile greenlet error on auto-created RFID spools by
eagerly setting k_profiles=[] after flush in create_spool_from_tray().
create_spool_from_tray() didn't eagerly load the k_profiles
relationship, so auto_assign_spool() triggered a lazy load in async
context when iterating spool.k_profiles. Set k_profiles=[] on new
spools since they can never have K-profiles yet.
Write NTAG213/215/216 tags for third-party spools via the SpoolBuddy
kiosk UI. New "Write" page with three workflows: existing spool, new
spool creation, and tag replacement. Backend encodes 133-byte OpenTag3D
NDEF payloads (material, color, brand, weight, temp). Daemon writes
page-by-page via PN5180 NTAG WRITE command with read-back verification.
Write commands flow through heartbeat polling with WebSocket status
updates. Includes 39 new tests and translations for all 6 languages.
- Redesign settings page with tabbed layout (Device, Display, Scale, Updates)
- Add screen blank timeout: blanks after touch inactivity, tap to wake
- Add CSS brightness filter for HDMI displays (no sysfs on HDMI)
- Add backend `language` field to app settings for server-side persistence
- Sync UI language from backend on kiosk load (separate Chromium instance)
- Top bar clock respects user's time format setting (system/12h/24h)
- Add SpoolBuddy settings translations for all 6 languages (en/de/fr/ja/it/pt-BR)
- Disable Chromium swipe-to-navigate in kiosk install script
- Add `video` group for DSI backlight access
SpoolBuddy's "Link to Spool" used the generic updateSpool API which only
set tag_uid, leaving tag_type and data_origin empty. Now uses linkTagToSpool
with tag_type='generic' and data_origin='nfc_link'.
Added a "Weight Check" inventory column (hidden by default) that compares
each spool's last scale measurement against calculated gross weight with
±50g tolerance. Shows green check for match, yellow warning + sync button
for mismatch. Backend stores last_scale_weight and last_weighed_at on each
spool when weight is synced via SpoolBuddy. Includes edge case handling
when scale weight < core weight. i18n keys added for all 6 locales.
The assign_spool endpoint sent wrong MQTT field values for user presets,
causing the slicer's AMS slot detail card to show all fields empty.
Two bugs: (1) cloud API was called with the raw slicer_filament value
including its version suffix (e.g. PFUS9ac902733670a9_07), returning 404;
the silent fallback sent setting_id as tray_info_idx instead of the real
filament_id; (2) no SlotPresetMapping was saved after assignment.
Now strips version suffixes before cloud lookup, resolves the real
filament_id via cloud API (with local preset and generic fallbacks),
includes brand in tray_sub_brands, and saves slot preset mapping.
Print Activity now shows an hourly heatmap (hours x days) for timeframes
≤7 days and dynamically adjusts calendar months for longer ranges.
Adds hourly granularity to Filament Trends, persists timeframe selection,
fixes optional chaining in QuickStatsWidget, and fixes UTC/local timezone
mismatches in date key generation. Also hardens the /archives/slim limit
param and fixes empty query string handling in API client.
- Add lightweight GET /archives/slim endpoint with column-level SELECT
(13 fields vs 46), skipping duplicate detection for ~70-80% payload
reduction on the stats dashboard
- Add ArchiveSlim Pydantic schema and TypeScript type
- Switch StatsPage and FilamentTrends to use ArchiveSlim
- Fix critical bug in failure_analysis.py: use effective_days for week
count, separate non-date filters, build fresh week_filter per loop
- Fix busiestDay timezone bug: parse YYYY-MM-DD with split() + local
Date constructor instead of new Date() which creates UTC midnight
- Fix success streak ordering: sort by completed_at || created_at
instead of created_at alone
- Add 6 integration tests for /archives/slim endpoint
Add Print Time of Day, Color Distribution, and Records widgets to the
Stats page. Extract shared MetricToggle component for consistent
weight/prints/time toggles. Add date range filtering to archives and
stats API endpoints. Reorganize widgets into parent cards (Printer Stats
and Filament Trends) and fix Dashboard layout persistence for new widgets.
BambuStudio uses TLS on port 3002 for certain printer models (e.g. A1
Mini / N1). The bind server only spoke plain TCP on both ports, so the
TLS ClientHello was rejected as "invalid frame" and the slicer could
never discover or connect to the virtual printer.
Port 3002 now uses TLS (reusing the VP's existing certificate), port
3000 remains plain TCP. Also updated proxy-mode to use TLSProxy for
the port 3002 bind proxy instead of raw TCPProxy.
- Replace TagDetectedModal with inline SpoolInfoCard/UnknownTagCard
in dashboard right panel (known spools show assign/sync/close,
unknown tags show add-to-inventory/link/close)
- Rewrite AssignToAmsModal as full-screen overlay reusing AmsUnitCard,
with AMS-HT and external slot support, single assignSpool API call
- Remove printer selector from assign modal (uses top bar selection)
- Extract filament_id <-> setting_id conversion to shared utility
(backend/app/utils/filament_ids.py), used by inventory + cloud routes
- Normalize slicer_filament in assign_spool to derive proper
tray_info_idx and setting_id for MQTT (was sending setting_id="")
- Rename SpoolBuddy top bar status label "Online" -> "Backend"
- Remove weightStable guard from sync weight button
The MQTT completion handler stored "aborted" as the queue item status
when a print was cancelled mid-print, but the response schema only
allows "cancelled". Pydantic validation failed on the invalid status
when listing all queue items, returning 500. Filtering by specific
status excluded the bad row so those still worked.
Normalise "aborted" → "cancelled" before storing. A startup fixup
also converts any existing "aborted" rows in the database.
sync_from_db() skipped VPs already in self._instances without checking
if their config had changed. Mode, model, access code, bind IP, remote
interface IP, and target printer changes were silently ignored until
manual toggle off/on or full restart. Now detects config drift and
restarts affected instances.
Four support package improvements:
1. Mask first two octets of subnet IPs in support info
(192.168.1.0/24 → x.x.1.0/24) to avoid leaking private network
addresses.
2. Fix Docker network_mode_hint detection. The old heuristic
(interface count > 2) always reported "bridge" on single-NIC
hosts because get_network_interfaces() excludes Docker
interfaces. Now checks for docker0/br-*/veth* visibility via
socket.if_nameindex() — these are only visible in host mode.
3. Parse MQTT "fun" field at top level of payload (not just inside
"print" key). Some firmware versions send it there, which
explains why developer_mode was null for most users.
4. Add virtual_printers section to support info with mode, model,
enabled/running status, and pending file count.
Fix camera button permissions & ffmpeg process leak (#550)
Camera button on printer card was clickable without camera:view
permission. ffmpeg processes (~240MB each) accumulated after closing
camera streams because: (1) stop endpoint called terminate() without
wait()/kill(), (2) HTTP disconnect detection only ran between frames
so was blocked when the generator was stuck on stdout read, and
(3) no mechanism caught processes orphaned by generator abandonment
or app restarts.
- Add camera:view permission check + tooltip to camera button
- Fix stop endpoint: terminate() → wait(2s) → kill() → wait()
- Add background disconnect monitor (polls every 2s, kills ffmpeg
directly on disconnect)
- Add periodic /proc scan (every 60s) that SIGKILLs any ffmpeg
with rtsps://bblp: not in an active stream
- Add noCamera i18n key to all 6 locales
- Fix camera API test mocks for async wait() and pid attribute
The H2C dual nozzle variant reports model code O1C2 via MQTT, but only
O1C was recognized. This caused the camera to use the wrong protocol
(chamber image on port 6000 instead of RTSP on port 322), producing a
reconnect loop. Added O1C2 to all model ID maps across 8 files.
Some firmware versions send MQTT payloads with non-UTF-8 bytes.
UnicodeDecodeError was uncaught, silently dropping the entire message
and leaving printer status as "unknown" with 0°C temps and no AMS.
Fall back to decode(errors="replace") to keep JSON parseable.
The tare and calibrate buttons on the Settings page queued commands
but never executed them due to five broken links:
1. Daemon received tare command but never called scale.tare()
2. No endpoint to persist tare offset back to backend DB
3. Heartbeat never called scale.update_calibration()
4. Heartbeat response with stale values overwrote new tare to zero
5. set-factor used DB tare_offset (stale/zero), producing wrong
calibration factor — empty scale showed ~5000g
Fixed daemon to execute tare, persist result, and propagate
calibration. Calibration step now captures raw ADC at tare time
and sends it with step 2, making factor computation self-contained.
Replaced calibration weight input with compact touch numpad for
the RPi kiosk's 1024x600 touchscreen (no physical keyboard).
The tare and calibrate buttons on the Settings page queued commands
but never executed them due to three broken links:
1. Daemon received tare command via heartbeat but never called
scale.tare() — the ScaleReader was available in shared dict
but unused
2. No API endpoint for the daemon to report the new tare offset
back to the backend DB, so tare results were lost
3. Heartbeat updated config but never called
scale.update_calibration(), so ScaleReader kept initial values
Added set-tare endpoint + API client method, and fixed heartbeat
loop to execute tare, persist the result, and propagate calibration
changes to the ScaleReader instance.
When Bambuddy auth is enabled, the SpoolBuddy kiosk gets redirected to
the login page because ProtectedRoute requires a user from GET /auth/me,
which only handled JWT tokens. The kiosk daemon already has an API key
but couldn't use it to satisfy the frontend auth check.
- Backend: /auth/me now accepts API keys (Bearer bb_xxx or X-API-Key)
and returns a synthetic admin UserResponse with all permissions
- Frontend: AuthContext reads ?token= from URL on first load, stores in
localStorage, and strips from URL (prevents history/referrer leakage)
- Install script: kiosk URL now includes ?token=${API_KEY}
- Tests: 3 new integration tests (Bearer API key, X-API-Key header,
invalid key rejection)
The SQLite WAL was never checkpointed during container shutdown, leaving
uncommitted data (including schema migrations) in the -wal file. On
restart, partial WAL recovery could cause inconsistent query results,
making the queue appear empty until a filter was applied. Add
PRAGMA wal_checkpoint(TRUNCATE) and engine.dispose() to the lifespan
shutdown handler.
The print scheduler had two code paths for queue items: model-based
(target_model set) and printer-specific (printer_id set). Only the
model-based path computed ams_mapping before starting the print. VP
queue items assigned to a specific printer went through the
printer-specific path with null ams_mapping, causing the printer to
default to the first AMS slot regardless of what the 3MF required.
Add _compute_ams_mapping_for_printer() call to the printer-specific
path, matching the existing model-based behavior.
maziggy