rotating platform 3d model

“Create only the rotating mechanism platform for a smart trash can system, not the full enclosure. The base is a flat circular platform 220mm diameter and 25mm tall with 3mm thick walls. No side walls, no enclosed housing — just a flat open platform that sits under the revolving cylinder. The center of the platform has a vertical axle 8mm diameter rising 20mm above the platform surface. The axle base sits inside a 608ZZ bearing housing — a printed cylindrical pocket 22mm diameter and 7mm deep — press fit into the center of the platform so the cylinder spins freely around the fixed axle with zero wobble. The top face of the platform has a smooth circular groove 203mm diameter and 3mm deep where the bottom edge of the revolving cylinder rests and rotates. A 28BYJ-48 stepper motor is mounted on the platform surface to the right side, driving a 10 tooth module-2 pinion gear on its 5mm D-shaped shaft. The pinion meshes with a ring gear of 100 module-2 teeth printed around the bottom outer e