sl-mechanical
0daac970c3
chassis/sim7600x_mount.scad Platform bracket for Waveshare SIM7600X-H 4G HAT (65×56 mm, RPi HAT M2.5 pattern 58×49 mm). Standoffs height = HAT underside component clearance + 4 mm. Three walls (X−, X+, Y+); Y− edge fully open for SIM card tray access without disassembly. Floor-plate notch wider than SIM slot so card inserts/ejects with board in situ. USB port notch same open edge. u.FL pigtail exit slot in Y+ wall. 4× M3 flat-head countersunk holes for base plate bolt-down. RENDER: bracket / assembly / bracket_2d (DXF for base plate layout). chassis/antenna_mount.scad Two bracket types on shared 25 mm stem split-collar (M4 bolts, set screw height lock, cable-tie grooves on rear half): lte_bracket() — arm with 2× SMA bulkhead holes (6.6 mm clearance, hex-nut capture on underside). u.FL pigtail relief grooves on arm underside. Antennas point skyward. Recommended: 500–600 mm stem. gnss_platform() — upward-facing tray (≤40×40 mm patch antenna), 4-sided retention lip, central GNSS coax slot, optional M2 bolt-down holes at 30×30 mm. Mount as high as practical for clear sky view: 750–800 mm stem height. Recommended: active 35×35 mm patch antenna. RENDER "full_stem" shows both at 80 mm spacing on stem stub. Individual RENDER modes for each printable piece. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>