a) Build the characters in the scene as in P1
- The 3 members of the monkey troop, mounted on a servo motor, rotate left and right
- A green LED is mounted in the trees which blink when the monkeys move
- The movement is triggered by a clap, which is detected by a Sound sensor
b.) The leader monkey moves back and forth on a track with drive rail, with 1-1 DC motor and gears on its arms, in the ruined city