Passive vs active buzzer difference in Arduino - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to turn on an active buzzer connected to pin 8.

Arduino

const int buzzerPin = 8;

void setup() {
  pinMode(buzzerPin, OUTPUT);
  digitalWrite(buzzerPin, [1]);
}

void loop() {
  // Buzzer is on
}

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AHIGH

BLOW

CINPUT

DOUTPUT

Attempts:

3 left

💡 Hint

Common Mistakes

Setting the pin to LOW turns the buzzer off.

Confusing pinMode with digitalWrite.

To turn on an active buzzer, you set the pin to HIGH.

2fill in blank

medium

Complete the code to generate a tone on a passive buzzer connected to pin 9.

Arduino

const int buzzerPin = 9;

void setup() {
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  tone(buzzerPin, [1]);
  delay(1000);
  noTone(buzzerPin);
  delay(1000);
}

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ALOW

B1000

CHIGH

D5000

Attempts:

3 left

💡 Hint

Common Mistakes

Using HIGH or LOW instead of a frequency.

Using too high frequency that the buzzer can't play.

The tone() function needs a frequency in Hertz. 1000 Hz is a common tone frequency.

3fill in blank

hard

Fix the error in the code to stop the passive buzzer sound.

Arduino

const int buzzerPin = 7;

void setup() {
  pinMode(buzzerPin, OUTPUT);
  tone(buzzerPin, 2000);
  delay(500);
  [1](buzzerPin);
}

void loop() {}

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AnoTone

BdigitalWrite

Ctone

DpinMode

Attempts:

3 left

💡 Hint

Common Mistakes

Using digitalWrite to stop the tone doesn't work.

Calling tone again without parameters won't stop the sound.

To stop a tone on a passive buzzer, use noTone(pin).

4fill in blank

hard

Fill both blanks to create an array of structs that maps buzzer types to their control methods.

Arduino

struct BuzzerControl {
  const char* type;
  const char* method;
};

BuzzerControl controls[2] = {
  { "active", [1] },
  { "passive", [2] }
};

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A"digitalWrite(HIGH)"

B"tone(frequency)"

C"digitalWrite(LOW)"

D"noTone()"

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up control methods for active and passive buzzers.

Using noTone for active buzzers.

Active buzzers are controlled by digitalWrite(HIGH), passive buzzers by tone(frequency).

5fill in blank

hard

Fill all three blanks to complete the code that plays a 1kHz tone for 1 second on a passive buzzer, then stops it.

Arduino

const int buzzerPin = 6;

void setup() {
  pinMode(buzzerPin, OUTPUT);
  tone([1], [2]);
  delay(1000);
  [3](buzzerPin);
}

void loop() {}

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AbuzzerPin

B1000

CnoTone

Dtone

Attempts:

3 left

💡 Hint

Common Mistakes

Using tone instead of noTone to stop the sound.

Swapping pin and frequency arguments.

The tone() function needs the pin and frequency, then noTone() stops the sound.