EducateNXT Robot Sumo The robot gains intelligence.

EducateNXT Introducing Autonomy Autonomous behavior occurs when a robot, using its own sensors, can make a decision for itself. The Sumo EduBots shown have light and ultrasonic sensors that allow them to make decisions.

EducateNXT Where am I? The first task is for the EduBot to stay inside the dohyo when it moves. It must know whether it is on the white middle or the black boundary – and what to do in each case. Write down what action you want for the EduBot when it is on… White middle __________________ __________________ Black boundary __________________ __________________

EducateNXT Where am I? Flowchart What reading does the light sensor see? Drive Forward (unlimited duration) Stop and turn around Sees black Sees white Repeat Here is the answer in the form of a flowchart.

EducateNXT Where am I? Program Here is the answer in the form of a flow chartHere is the answer in the form of a program. With some blanks for you to work out. Note the < sign in the Compare part of the switch configuration panel has been switched to get “sees black” on the top branch. Mouse click to reveal blocks.

EducateNXT Where are you? Using the ultrasonic sensor, the opponent can be tracked. To attach an ultrasonic sensor, you can use the NXT Building Guide that comes with the kit. Or better yet, try and attach your own – maybe at the front.

EducateNXT Programming the U.S. Sensor Fill in the behaviors U.S. Sensor Behavior Can detect an object within range Cannot detect an object within range

EducateNXT Programming the U.S. Sensor The Flowchart Check U.S. sensor. Is there an object in front of the robot? ? ? Yes No Repeat

EducateNXT Programming the U.S. Sensor …and the program May involve a few blocks

EducateNXT Two Sensors – One Program Check light sensor ? Check ultrasonic sensor ? ? Black boundary detected Opponent found No object detected Sees white only Repeat Which sensor takes priority (goes first) – light or ultrasonic? Programming up to you – no hints this time!

EducateNXT …and for the teacher

EducateNXT A sample solution

EducateNXT