Digital Technologies

Digital Technologies

1. Task requirements

   • Prescribed criteria
     • Avoiding obstacles in front of robot
       • Using distance sensor/ touch sensor
     • Staying on lines
       • Constantly adjusting position and direction to stay on line using colour sensor
     • Detecting obstructions and stopping
       • Detection constant using If statements and loops
   • Personal criteria
     • Sound
       • Alert sound when obstacle is in front
     • Light
       • Smiling face
     • Movement
       • Doing a 360 degree turn when goal is achieved

2. Code constructs

   • IF Statements
     • Sequences + actions
       • Justifying obtsacle prevention when moving on a line
   • Loops
     • Forever loops
       • Looping frequent actions
     • If statements in forever loops
       • Justifying obstacle detection frequently
     • While loops
       • Only detecting things when a condition is met
   • Sensor nodes
     • Distance sensor blocks (cm, in)
       • Using distance sensor to detect wall 15cm in front of robot
     • Movement sensor blocks (cm/s)
       • Detecting when robot is being tilted precisely

3. Algorithm constructs

   • Iteration
     • Writing approach in pseudocode
       • Using IF, ELSE, WHEN commands and parameters
     • Fixing errors
       • Revising and using testing tables
   • Selection and condition
     • Selecting approaches
       • Using testing tables for solutions and errors
     • Testing conditions
       • Testing tables
   • Sequence
     • Implementing pseudocode into SPIKE PRIME sequence
       • Using IF statement formats in SPIKE PRIME
   • Assignment

4. Lego SPIKE PRIME robot

   • Distance sensor
     • Detecting obstacles with distance sensor
       • Minimum and max viable distance to detect obstacles
     • Range of detection
       • Only stopping when obstacle is 5-10cm in front
   • Motion sensor
     • Detecting a moving obstacle
       • Seeing and avoiding other robots
   • Motors
     • Motor configuration
       • Setting movement motors to E+F
     • Set motor speeds
       • Setting motor speed to 20%

5. Planned response

   • Rockfall challenge
     • Follow the path to the exit by pushing the obstacle out of the way
       • Using touch sensor to move obstacle
   • Poison Ivy challenge
     • Follow the path to the exit without touching the obstacle
       • Using distance sensors and colour sensors to follow paths and avoid obstacles