sl-mechanical
22d7b546f3
Adds prototype_baseplate.scad — a laser-cuttable / CNC-routable flat base plate for the self-balancing robot using caliper-verified axle dimensions from the wiki (replaces placeholder values in PR #7): Axle base dia: 16.11 mm (was 14 mm) D-cut OD: 15.95 mm (new) D-cut flat chord: 13.00 mm (new) Total protrusion: 65.50 mm Bearing seat OD: 37.80 mm Tire OD: 254 mm (10x2.125") Axle CL height: 127 mm (was wrong 310 mm) Design: - Single flat plate (6 mm Al / 8 mm acrylic), 680x220 mm blank - Open fork slots (16.51 mm, semicircular tip) at each axle end - Bearing seat relief cutout prevents Ø37.8 mm collar binding on edge - Two-piece dropout clamp: lower (round bore) + upper (D-cut bore) - D-cut profile computed from chord geometry with 0.3 mm all-round clearance - MAMBA F722S FC holes (30.5x30.5 mm M3), battery mount holes (M4) - Lightening slots, corner radii via minkowski - RENDER param switches between 3-D assembly and 2-D DXF projections for each of the three laser-cut parts Updates BOM.md to Rev B: measurement delta table, prototype BOM section, updated motor entry with verified axle spec. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>