Year 9- Term 1

Year 9- Term 1

1. Task requirements

   • Prescribed criteria
     • Follow a safe path to the exit
       • Follow the black line throughout the course
       • Use sensors, touch and distance, to detect obstacles
       • Use colour sensors to detect the black line
     • Use sensors to identify any dangers or obstacles
       • Use the distance sensor to asses where the object is
       • Push the object out of the way of move around, according to the obstacle
       • Use the touch sensor when its pressed, to act accordingly
     • Use sensor(S) to avoid or manoeuvre any dangers or obstacles
       • Stop removing before touching the obstacle to avoid
       • Use the distance sensor
     • Complete a room specific Challenge
       • When touch sensor is touched, press against the box and move forwards with force
       • Return to the black line after object has been moved
       • Follow the black line with color sensor
   • Self determined criteria
     • When robot begins the maze start with confused face
       • Use IF statement to change to smiley face at the end
       • Use “light” section to display confused face
     • When robot reaches the end, display smile
       • Use “light section to display smiley face
       • Use IF statment for when the robot reaches grey stop and display smile

2. Code constructs

   • IF statement
     • IF statement checks whether a condition is true and THEN allows it to continue IF ELSE statement sends a message the conditions aren’t true than do another action
       • IF distance sensor senses a wall THEN display smiley face ELSE display angry face
   • FOR loop
     • How many times a loop operates for
       • When needing to move around a box once, instead of rewriting the code 4 times it would simply be better to use a repeat 4 times around one code
   • Other code constructs
     • While loop- used to repeat when a condition is true or false, can be used as forever loops
       • For example if the robot had to move forward and turn once it sensed an item a hole loop would be allowed it to move forward WHILE there’s nothing infront of it

3. Algorithm constructs

   • Iteration
     • Repetition, anything in the program that goes round in a loop
       • For example FOR loops or WHILE loops, while an object is closer than 20 cm stop
   • Selection and conditions
     • Selection statements use conditions to select which line of the program will be used, helps make decisions and changes, check whether conditions are true
       • (IF statements) IF robots sense obstacle display smiley face
   • Assignment
     • Storing a value in a variable
       • Example: winner: “Jennifer”
   • Sequence
     • A set of instructions that is processed in a certain order
       • For example ‘going to school’ sequence would be: put on socks, put on shoes, exit house, lock door.

4. Spike prime robot

   • Motors
     • Rotation sensors, measured in their position in degrees
   • Distance sensor
     • Measures the distance to an object using ultra sound
   • Other sensors
     • Touch sensor- detects input and controls responses Colour sensor- three main modes, used as a light source as well as colour sensor

5. Planned response

   • Rockfall challenge
     • Move the rock (obstacle) out of the ways and return to the path
       • Use the touch sensor to sense the object and move forward until the object is moved out of the way then proceed to follow the black line