Bambu AMS Dashboard — Full Data Flow

Phase 1 — Spool Scan & Loading

NFC Tag on Spool

UID, material, color, temps, weight

scan

SpoolSense Scanner

Reads NFC tag → publishes to MQTT

MQTT: spoolsense/{id}/tag/state

uid, material, color, remaining_g,
spoolman_id, temps

Home Assistant

sensor.spoolsense_{id}_spool → "present"

HTTP: Spoolman UID lookup (async)

Spoolman

Returns weight, spoolman_id

trigger: sensor state → "present"

Blueprint: SpoolSense → Bambu AMS

spoolsense_bambu_ams.yaml

Waits for user to physically load spool into AMS tray
(wait_for_trigger: tray empty → not empty)

bambu_lab.set_filament

tray_type, tray_color,
tray_info_idx, temps

Bambu Printer

Updates AMS tray info

MQTT: cmd/tray_assign

{tray_index, uid, spoolman_id}

Scanner stores UID→Tray

NVS: maps UID to tray index
Enqueues Spoolman weight lookup

Phase 2 — Dashboard Update

Bambu Printer

Reports tray state via Bambu MQTT

HA Bambu Lab Integration

sensor.{printer}_ams_tray_{1-N}

type, color, empty, name

trigger: any tray state change

Blueprint: Bambu AMS Dashboard

spoolsense_bambu_dashboard.yaml

Reads tray attributes (type, color, empty)
Builds JSON array, skips empty trays

MQTT: spoolsense/{id}/cmd/tray_update

[{tray_index, ams_id, material, color}, ...]

SpoolSense Scanner

Parses tray data → persists to NVS → renders dashboard

Phase 3 — Weight Enrichment

Spoolman Weight Lookup

Triggered by cmd/tray_assign
For trays with stored UIDs

HTTP: streaming UID lookup

Spoolman

Returns remaining weight for UID

SPOOLMAN_SYNCED → update weight_g → re-render

Deduction (follow-up)

cmd/deduct_tray arrives →
scanner resolves tray → UID →
subtract weight → re-render

Automatic weight updates
after every print —
pending print test verification

TFT Dashboard

2x2 / 2x4 / 4x4 grid — color, material, weight per tray