Challenge 3 – Island Treasure Collection

Get a stopwatch from http://www.shodor.org/interactivate/activities/stopwatch/ 

The island is painted in a dark colour on a piece of board.  It should be a somewhat random shape, with 4 markers (also in a dark colour) for treasure.

Click to see an enlarged image of our island.

Your robot should move around the island and and cover each of the four pieces of treasure (dark markers) while keeping some part of your robot on the island (the dark shape). You have one minute to collect the treasure. (Robot must cover entire marker to be deemed to have collected it)

Score: 2 points per marker collected, 2 for staying on the island for a minute. If at any stage the entire robot has left the island, the robot is deemed to have drowned and the challenge is over.

You will need to build a robot with a light sensor facing downwards and almost touching the floor. 

When the light sensor sees a lighter area, it has started to move into the sea, so you will need to stop, reverse a short distance, then turn before you move forward again.

Challenge 4 – Follow the line

Get a stopwatch from http://www.shodor.org/interactivate/activities/stopwatch/ 

In this challenge your robot should follow a curved line.  Your line can be black or white and could be marked out with tape on a board.

Follow the white line in the fastest time.  If the robot leaves the line the challenge is over.

Score: 1st 10 points, 2nd 8 points, 3rd 6 points, participation - 4 points