Challenge #1 – Relay Race Robot #1 will be randomly placed on starting line #1, #2 or #3. Robot #1 will drive until it detects the “Dark Line” - Robot #1 will transmit to Robot #2 that it has finished its leg of the race. Robot #2 will start once Robot #1 has reached the dark line and received a message. Robot #2 will follow the curved line until it hits the finish line wall Wall Dark Line

Challenge #2 – Grid Navigation Rules: Robot #1 (Blue) will have a sonar sensor and a light sensor. Robot #2 (Green) will have a “claw” and a light sensor. Field will be a 5x10 9-inch spaced “grid world” Total board size is 45 inches by 93 inches (4x8 sheet with 1 ½ inches cut off each side – to fit in an FLL size game board) The location of the ball, wall and goals will vary between each run, but will always remain in the same “column” of the grid.

Challenge #2 – Grid Navigation Objective #1 – Detect the Wall – Robot #1 (Blue) will drive forward and detect the wall. – Robot #1 should measure the number of grid spaces to determine the location of the wall and transmit this information to Robot #2 (Green)

Challenge #2 – Grid Navigation Objective #2 – Drive to the Ball – Robot #2 (Green) will drive forward and detect the ball. – The Red/Blue balls will be from a standard NXT kit – The ball will on a 3 inch tall PVC Pipe – Robot #2 should use the information Robot #1 (Blue) sent to determine the distance.

Challenge #2 – Grid Navigation Objective #3 – Determine the color of the ball – Robot #2 (Green) will determine the color of the ball (either blue or red) – this will be demonstrated by knocking the ball into the correct “Goal”. – Each “run” will randomly have either a blue or red ball.

Challenge #2 – Grid Navigation Objective #4 – Defending the goal – Robot #1 (Blue) will drive into the opposing colored goal (opposite of the color of the ball) – To complete this, Robot #2 (Green) has to transmit the color of the ball that it found.