Do you have a question about the Rhodes LEGO MINDSTORMS NXT ZOO! and is the answer not in the manual?
Assemble the main NXT brick base and attach motors.
Build the chassis and attach structural components for the legs.
Connect axles, gears, and integrate primary leg mechanisms.
Continue leg assembly, test motion, and prepare for sensor mounting.
Attach remaining parts, including the ultrasonic sensor.
Set up the 'Forever' loop and configure the ultrasonic sensor for detection.
Configure motor blocks for basic forward movement using output ports.
Add and configure move blocks for robot locomotion and turning.
Configure motor actions for backward movement and turning, finalize program.