NXTG Workshop Day 2

Programming with • Touch Sensor • Light Sensor• Ultrasonic Sensor

Repeat

CJ ChungAssociate Professor of Computer ScienceLawrence Technological University

Start-Touch

Wait until the touch sensor is pressed; Then start the robot to go forward Stop after a second

Start-Light

Locate the robot in the middle of the ring Wait until the light sensor detects very

bright (lantern) light Then start the robot to go forward Stop after a second

Start-Light

Stop-Touch

Go straight until the bumper is hit then stop

Stop-Edge

Go straight until the white edge of the ring

Then stop

Ultrasonic Sensor Test

Loop

To repeat a sequence of code Until

Elapsed time Number of repetitions Sensor condition is met Logic becomes true Forever

Say “Yes” – 10 times

Make the robot move around in the ring – Basic Sumo (Sumo0)

Repeat the following forever: Go forward until the edge Backward slightly Spin right

Sumo0

First Sumo Competition

Some matches Ask students to list ideas to improve the

Sumo robot

Repeat Until

Spin a little bit until it detects an object less than 10 inches

If detected, stop spinning and say “Object”

Mission: Find a static object using the ultrasonic sensor & push it out of the ring,

box

Robot

but the robot should remain on the ring!!