LEGO, Sensors, How To Use Lego Sensor, Code Lego Examples, Sharing Lego Codes.
three commented codes for this video: 06_a_TouchSensorNBack_v1 Get Going till bump at the wall, then turn out to the origin point; 06_b_PushTennisBall_v1 The Tribot will wait for the bumper tennis ball, then push the ball back to you; 06_c_TellingThreeColors_v1 Find out what the color it is \o/