Wheels: 12 inch cheap simple plastic wheels (perimeter 95.76 cm)
Motors: Nema23 Worm Gearbox L76mm Stepper Motor Speed Reducer+ Stepper Driver CNC Kit from ebay (Gear Ratio: 15:1)
Stepper driver: Sumtor MB450ATwo-phase hybrid stepping motor driver
Power: 3x 3S LiPo Turingy 5000 mAh
Control low-level: Arduino Nano Strong
Control high-level: NVidia Jetson TX2
3D models of case for ZED MINI, ultrasonic sensors and stand for batteries created in Fusion 360 available: fusion360_models.zip.