Reporter @thenewguy runs an engineering farm with one AMS per material
(PLA, ASA, Nylon, PVB, HIPS) — Bambuddy's single global ams_humidity_fair
threshold (default 60%) was driving both the queue / ambient auto-drying
trigger AND the hourly humidity alarm uniformly, which is wrong for
multi-material setups where Nylon wants <10% and PLA is fine at 60%.
Drying RUN parameters were already per-filament via drying_presets;
this commit adds the missing per-filament TRIGGER.
New setting ams_humidity_thresholds — JSON map of filament-type to
threshold percent with a "default" key for unknown / unmapped types.
Empty / unset → both consumers fall back to ams_humidity_fair so the
upgrade is silent.
Resolver lives in PrintScheduler.resolve_humidity_threshold(trays,
thresholds, fallback) — picks the lowest (most-restrictive) threshold
across all loaded tray types, matching the conservative-params strategy
_get_conservative_drying_params already uses for temp / hours. Empty
tray slots contribute no constraint; all-empty AMS falls through to the
"default" key. Filament names normalized to uppercase base (so
"PLA Basic" / "pla basic" both map to PLA).
Two consumer sites rewired through the same resolver so the scheduler
and the alarm path can never disagree about whether an AMS is "too
humid":
- print_scheduler.py::_check_auto_drying — per-AMS humidity comparison
for start / stop / skip decisions.
- main.py AMS sensor / alarm worker — hourly humidity alarm notifier.
UI: new table in Settings → Workflow → Auto-Drying, below the existing
Drying Presets table. Default row + 8 default filament types
(PLA / PETG / TPU / ABS / ASA / PA / PC / PVA) pre-filled from the
current ams_humidity_fair value so the editor starts sensibly.
Input pattern: draft-on-edit / commit-on-blur (transient humidityDrafts
state per row). onChange only updates the draft; onBlur (and Enter)
parses + clamps to [5, 95] + commits. Empty value on blur clears the
override and falls back to default. Caught mid-PR via a typing test:
the naive per-keystroke clamp snapped "3" → 5 before the user could
type the second digit of "30".
Setting is in the public _UI_PREFERENCE_FIELDS allowlist (same rationale
as drying_presets and ams_humidity_fair — non-sensitive integer map,
no SETTINGS_READ permission required for badge-color rendering).
Ambient drying: automatically dry filament on idle printers when
humidity exceeds threshold, regardless of queue state. Separate toggle
from queue auto-drying — both can run simultaneously. Uses the same
presets, humidity threshold, and power constraint detection.
Fix: block mode (wait for drying) previously skipped the humidity
auto-stop check for already-drying printers, causing drying to
continue indefinitely. Now only prevents starting new drying.
Queue auto-drying: scheduler automatically starts drying on idle printers
with scheduled queue prints when AMS humidity exceeds the configured
threshold. Uses conservative parameters (lowest temp, longest duration)
for mixed filaments. Drying stops when humidity drops below threshold
(30-minute minimum prevents oscillation), when scheduled items are
removed, or when the feature is disabled. Optional "block queue" mode
delays the next print until drying completes.
Configurable presets: temperature and duration per filament type,
editable in Settings → Print Queue, used by both manual drying popover
and queue auto-drying. Separate presets for AMS 2 Pro (n3f) and AMS-HT
(n3s) reflecting different heating capabilities.
PSU detection: drying button disabled with tooltip when dry_sf_reason
indicates insufficient power. Parses drying status bits and dry_sf_reason
from AMS info hex string via MQTT.
Backend: print_scheduler.py (+316 lines), bambu_mqtt.py, printer_manager,
schemas, settings route. Frontend: PrintersPage drying presets prop,
SettingsPage drying config UI, i18n (7 locales). Tests: 27 new tests in
test_scheduler_auto_drying.py covering conservative params, presets,
state sync, stop logic, minimum drying time, and auto-stop regressions.
maziggy