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1 Geometry
2 Meshes
1 Simulation setup
1 Result“Wrecking Ball Challenge”: an autonomous spherical robot, 2.0–2.5 ft in diameter, for a 75 m obstacle track. Phase 1 (due Oct 20) needs a CAD assembly with the internal layout and center-of-gravity placement. Design Shell: Ø740 mm (2.43 ft), 4 mm polycarbonate, in two hemispheres bolted at an equatorial flange. This keeps it inside the 2.0–2.5 ft limit with margin, and the clear shell lets the camera see out. Drive: Two gearmotors, one per side, each driving its hemisphere through a shaft and hub. The pendulum frame hangs from the motors, so driving both together rolls the ball and driving them differentially steers it. Pendulum frame: Side plates, a battery tray at the bottom and an electronics deck at mid-height, all as one part. Low mass: 2 batteries and 2 steel ballast blocks sit on the tray. Electronics deck: Jetson, 2 motor drivers, a kill-switch contactor, the wireless e-stop receiver, a DC-DC converter and an IMU. Camera: On a front bracket, inside the shell. Nothing protrudes, so the 0.5 ft limit is met. All parts are named, and the clearance to the inner shell wall is about 15 mm at the tightest corner.
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by mwavinyamwavinya
by ahmedhussain18ahmedhussain18
by ahmedhussain18ahmedhussain18
by ahmedhussain18ahmedhussain18
sejalpandey301 created this project
1 Geometry 2 Meshes 1 Simulation setup 1 Result“Wrecking Ball Challenge”: an autonomous spherical robot, 2.0–2.5 ft in diameter, for a 75 m obstacle track. Phase 1 (due Oct 20) needs a CAD assembly with the internal layout and center-of-gravity placement. Design Shell: Ø740 mm (2.43 ft), 4 mm polycarbonate, in two hemispheres bolted at an equatorial flange. This keeps it inside the 2.0–2.5 ft limit with margin, and the clear shell lets the camera see out. Drive: Two gearmotors, one per side, each driving its hemisphere through a shaft and hub. The pendulum frame hangs from the motors, so driving both together rolls the ball and driving them differentially steers it. Pendulum frame: Side plates, a battery tray at the bottom and an electronics deck at mid-height, all as one part. Low mass: 2 batteries and 2 steel ballast blocks sit on the tray. Electronics deck: Jetson, 2 motor drivers, a kill-switch contactor, the wireless e-stop receiver, a DC-DC converter and an IMU. Camera: On a front bracket, inside the shell. Nothing protrudes, so the 0.5 ft limit is met. All parts are named, and the clearance to the inner shell wall is about 15 mm at the tightest corner.
