Starting from the bottom, the drive train assembly (this was taken a bit ago but provides a good "baseline")
Next comes the electronics board "drawer". This was originally conceived to be a slide out drawer for easy access, but has since been redesigned with doors around the robot allowing access to reach in to the components rather than sliding the drawer out.
Next comes the Collector. This subsystem picks 'moon rocks' up from the floor and lifts them into a storage area. The rollers seen here will be underneath a band of material the 'moon rocks' (Orbit Balls) cling to.
Finally, the shooter. Still mounted in the plywood prototype, the shooter is a geared assembly, with each roller increasing speed, propelling the 'moon rocks' out of the top. Not shown is the hood and turret assembly, controlled by a camera to target the direction the moon rocks are thrown.
