sl-mechanical
f952ca2d0b
Dovetail rail + tool-free swappable payload modules for all variants: - payload_bay_rail.scad: 50×12 mm 60° dovetail rail (DXF for CNC Al bar), spring ball detent (Ø6 mm, 50 mm pitch), continuous safety-lock groove (M4 thumbscrew), 4-pin pogo connector housing (GND/5V/12V/UART), lab/rover/tank deck adapter plates - payload_bay_modules.scad: universal _module_base() (male tongue, detent bore, 4× Ø4 mm target pads, lock bore) + 3 example modules: cargo tray (200×100 mm, Velcro slots, bungee cord slots), camera boom (120 mm mast + 80 mm arm, 2020-rail-compatible head, 3-position tilt), cup holder (Ø80 mm tapered, 8-slot flex grip). Includes copy-paste module template. - payload_bay_BOM.md: hardware list, CNC spec (dovetail dimensions, surface finish, connector pocket), load analysis (2 kg rated with Al rail + lock), module developer guide with constraints table Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>