Smart props
Chests, tomes, fog screens — later immersion phase.
Engineering
Smart props & immersion extras planned
Later-phase physical objects that reuse the same UWB fabric and gateway game logic. Software treasure nodes already exist for hardware-free testing.
Treasure chests / ward crystals
ESP32 + DWM3001C (+ optional 12 V solenoid latch). Gateway TreasureNode
already implements unlock-by-aim, loot tables, HUD/Unity events. Virtual nodes at
(±5, 0, ±5) seed without hardware. Admin: /admin/treasure.
Spell tomes
Pedestal displays — MAX7219 32×8 or E-Ink on ESP32 — show leader, countdown, sudden-death. Keeps eyes in the arena, not only on the wand PWA.
Fog screen
PVC + ultrasonic mist + fans → doorway mist sheet; budget pico-projector for floating imagery. Players walk through or cast at it.
Haze / shrines
Water-based hazer for beam visibility (air-change rules apply). Shrine/beacon props support game-design yaw re-zeros in cameraless v1.