Year 9 - Item 1

Year 9 - Item 1

1. Task Requirements

   • Prescribed Criteria
     • Safe Path
       • Code line-following algorithim using colour sensor.
       • Follow edge of black line accurately.
       • Keep robot strictly on track.
     • Identify Dangers
       • Scan ahead constantly with ultrasonic sensor.
       • Set specific obstacle distance threshold.
       • Trigger code interrupt when hedge detected.
     • Avoid Obstacles
       • Execute precise 90-degree detour turns.
       • Maintain zero contact with hedge obstacle.
       • Complete full safe bypass maneuver.
     • Room Challenge
       • Navigate completely around hedge obstacle.
       • Relocate black line using colour sensor.
       • Redirect robot to continue line following.
   • Self-Determined Criteria
     • Celebration
       • Play unique escape sound track.
       • Trigger display immediately at exit.
       • Flash custom LED screen pattern.

2. Spike Prime Robot

   • Motors
     • Drives wheels via tank-move blocks.
     • Executes sharp, controlled turning actions.
   • Distance Sensors
     • Flags obstacle detection to stop loop.
     • Measures exact millimeter distance ahead.
   • Other Sensors
     • Colour sensor reads reflected light intensity.
     • Differentiates between black path and floor.

3. Planned Response

   • Rockfall Challenge
     • Fallen rock blocks path completely.
       • Uses motor power to push rock away.
   • Poison Ivy Challenge
     • Robot follows path to hedge obstacle.
       • Uses detour algorithm to avoid contact.

4. Algorithim Constructs

   • Iteration
     • Repeats code block multiple times.
       • Loop line-following blocks indefinitely.
   • Selection & Condition
     • Checks conditions to branch code path.
       • If sensor sees black, turn left.
   • Assignment
     • Storing numeric values into variables.
       • threshold = 50 for line following.
   • Sequence
     • Instructions run step-by-step downwards.
       • Set movement speed before starting motors.

5. Code Constructs

   • IF statement
     • Diverts path when obstacle is detected.
       • if distance < 10 then start detour.
   • FOR Loop
     • Repeats actions for set count.
       • Flash celebration light exactly five times.
   • Other Code Constructs
     • Checks loop condition to control continuous actions.
       • While colour sensor is not red, repeat line following.