2018-01-05 21:20:00 -08:00
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# Reverse Beeper Activity 1
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```blocks
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2018-02-14 16:05:31 -08:00
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forever(function () {
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2018-01-05 21:20:00 -08:00
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music.playTone(440, sensors.ultrasonic4.distance());
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2018-02-14 16:05:31 -08:00
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pause(50)
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2018-01-05 21:20:00 -08:00
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})
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2018-02-19 07:35:08 -08:00
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motors.largeBC.run(-20);
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2018-01-05 21:20:00 -08:00
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sensors.ultrasonic4.pauseUntil(UltrasonicSensorEvent.ObjectNear);
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2018-01-09 12:46:48 -08:00
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motors.largeBC.stop();
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2018-01-05 21:20:00 -08:00
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```
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