2018-01-06 06:20:00 +01:00
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# Reverse Beeper Activity 2
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```blocks
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2018-02-15 01:05:31 +01:00
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forever(function () {
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2018-01-06 06:20:00 +01:00
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if (motors.largeB.speed() != 0 && sensors.ultrasonic4.distance() < 20) {
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music.playTone(440, sensors.ultrasonic4.distance());
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2018-02-15 01:05:31 +01:00
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pause(50)
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2018-01-06 06:20:00 +01:00
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}
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})
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2018-02-19 16:35:08 +01:00
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motors.largeBC.run(-20);
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2018-01-06 06:20:00 +01:00
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sensors.ultrasonic4.pauseUntil(UltrasonicSensorEvent.ObjectNear);
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2018-01-09 21:46:48 +01:00
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motors.largeBC.stop();
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2018-01-06 06:20:00 +01:00
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```
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