Production Scanner
Realtime production-line tracking system
Production lines were tracked with pen & paper.
Yields were unclear. Miscounts and oversupply went unnoticed.
What if every seedling was automatically scanned and counted?
Real-time data is streamed from barcode scanners and laser counters.
iPads surface issues instantly. Accurate metrics now, not next week.
Line 1 NOW PRODUCING: Alyssum White
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Today's schedule
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Production Line Barcode Scanner Laser Counter Raspberry Pi ×4 Express Server Indexed file SSE Broadcast iPad UI

Architecture

  • Headless Raspberry Pis read USB barcode scanners and GPIO laser counters
  • Node.js + Express REST API aggregates multi-sensor data from all production lines
  • Server-Sent Events push state to React iPad dashboards
  • File-backed persistence with in-memory index for sub-ms query times

Real-time operations

  • SSE pushes every scan and count to iPads instantly
  • UI built in collaboration with production line staff
  • One-tap on-the-fly adjustments with full audit trail
  • Supervisors, managers and accounting all get custom live dashboards
Audit writes
atomic ✓ flush
Network queue
retry OK queuing
Index verify
healed mismatch
Scan fallback
degraded OK bad scan

Built for the floor

  • All events queued and written atomically to audit-ready files
  • Network drops handled seamlessly by queue and retry with backoff
  • In-memory index auto-verifies and self-heals from single source of truth
  • Production never stops: graceful degradation with bad scans and sensor faults