WristTurn v1 — Modular System
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Module hull 32→26 × 22 × 46 mm (trapezoid + dome top, flat bottom)
Stack Battery → BNO085 → XIAO (bottom→top)
BNO085 28.2 × 20.9 mm (orange PCB)
XIAO 22.6 × 17.9 mm (blue PCB · USB-C at Z− end)
Battery 602030P 31.5 × 19.1 × 6.4 mm
Side port 8 pogo + 2 magnets (Z+ face, 2×4 grid)
Bottom port 4 pogo spring pins (flat underside → band EMG)
Reset btn RST→GND tactile · ⌀5mm · X+ side wall
EMG band 2× BioAmp · 6 pads (IN+/IN−/REF per channel)