IoT Sensor Enclosure: Base, Lid and PCB Mounting, with Drawing

IoT sensor enclosure designed around a 70 x 45 mm circuit board, for injection molding in ABS or FDM 3D printing. Outer size 76 x 51 x 28 mm, with 2 mm walls and a 5 mm corner radius The board sits on four 6 mm standoffs, and posts under the lid clamp it in place Four M3 x 25 self-tapping screws pass through the lid, the posts and the board into the standoffs, with 5 mm of thread engagement USB-C cutout (9.5 x 3.6 mm) set to the connector height on the board Lid with seven vent slots, a 2.4 mm LED window and a locating lip with 0.25 mm clearance All parts checked in 3D for zero overlap. Base and lid weigh about 30 g in ABS Files: STEP for the base, the lid and the full assembly (opens in SolidWorks, Fusion 360, Inventor, Creo and Onshape), a dimensioned third-angle drawing (PDF) and presentation renders. Every dimension is a parameter, so a new board size, port layout or wall thickness is a quick revision. Need an enclosure for your own board? Message me with the PCB outline and connector positions.