Extension activities for switch sensors
Stop at Obstacles
program the robot to drive in a square. if the robot detects an obstacle, have the robot stop and wait for the obstacle to be removed.
Binary Clock, adjustable
Take the Binary clock activity from the LED section and add some buttons to allow a user to adjust the time without a computer. Some possible button ideas is a button that increments everything. A separate button for incrementing the minutes and hours. You could even use 4 buttons and have a button increase the minutes, decrease the minutes, increase the hours, decrease the hours.