|Use the shortest (20 cm) wire to connect the motor to port A on the NXT, and one of the medium (35 cm) wires to connect the ultrasonic sensor to port 4 on the NXT. Important: Route both wires through the frame as shown, to keep them out of the way.|
|The track connects to the NXT/lift assembly using the two pegs already on the NXT side.|
|Ball Roller Coaster Programming|
Use the Ball_Coaster program for the Ball Roller Coaster. This is a simple program that uses the ultrasonic sensor to tell the lift motor when to tilt up.
How to Use the Ball Roller CoasterIf you start the Ball Roller correctly, it should be able to keep both of the balls on the track for a few minutes or so before something goes wrong.