1. 3 | Touch sensors Created by H. Robinson & A. Gostelow TOUCH SENSORS

2. 3 | Touch sensors Created by H. Robinson & A. Gostelow Objectives To see what a touch sensor does. To build a simple program using a touch sensor To extend programming skills

3. 3 | Touch sensors Created by H. Robinson & A. Gostelow The touch sensor is a type of input sensor that causes a reaction when the robot hits an obstacle.

4. 3 | Touch sensors Created by H. Robinson & A. Gostelow Use the touch sensor to make your robot stop at an obstacle. Green light to begin program Stop motor A Motor A goes forward Push in touch sensor Red light to end program

5. 3 | Touch sensors Created by H. Robinson & A. Gostelow

6. 3 | Touch sensors Created by H. Robinson & A. Gostelow Can you extend your program, remember the touch sensor is only on the front of the robot, think about using both motors and time symbols to achieve a more complicated program.

7. 3 | Touch sensors Created by H. Robinson & A. Gostelow KEY POINTS Touch sensor tells the robot when it hits an obstacle Start and end your program with traffic lights Use a stop sign to stop the motors Make sure the symbols are linked correctly using the cotton reel symbol Touch sensor defaults to input port 1 Test your program and improve it.