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18.3: Ultrasonic Follow Smart Car
(1)Project Description
In previous lesson, we' ve learned the basic principle of line tracking sensor.
Next, we will combine ultrasonic sensor with car shield to make an
ultrasonic follow car.
The ultrasonic sensor detects the obstacle distance and control the motion
status of car.
(2)Experimental Preparation：
➢ Insert micro:bit board into slot of keyestudio 4WD Mecanum Robot Car
➢ Place batteries into battery holder
➢ Dial power switch to ON end
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