Playing melodies with tone() in Arduino - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to play a tone on pin 8 at 440 Hz.

Arduino

tone(8, [1]);

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A440

B8

C1000

Dtone

Attempts:

3 left

💡 Hint

Common Mistakes

Using the pin number as the frequency.

Using the function name as a parameter.

The tone() function plays a sound at the specified frequency in hertz. 440 Hz is the standard A note.

2fill in blank

medium

Complete the code to stop the tone playing on pin 8.

Arduino

noTone([1]);

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A440

B1000

Ctone

D8

Attempts:

3 left

💡 Hint

Common Mistakes

Passing frequency instead of pin number.

Passing the function name.

The noTone() function stops the tone on the specified pin. You must give the pin number.

3fill in blank

hard

Fix the error in the code to play a 500 Hz tone for 1000 milliseconds on pin 9.

Arduino

tone(9, [1], 1000);

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Atone

B9

C500

D1000

Attempts:

3 left

💡 Hint

Common Mistakes

Using the pin number as frequency.

Using the duration as frequency.

The second argument is the frequency in hertz. 500 is the correct frequency to play.

4fill in blank

hard

Fill both blanks to create a dictionary of notes with their frequencies and play the note 'C' on pin 7.

Arduino

int notes[] = [1];
tone(7, notes[[2]]);

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A262, 294, 330

B0

C1

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong indices for notes.

Not using correct frequencies.

The array contains frequencies for notes C, D, E. Index 0 is for C, so playing notes[0] plays C.

5fill in blank

hard

Fill all three blanks to create a loop that plays notes from an array on pin 6 with 500 ms delay between notes.

Arduino

int melody[] = [1];
for (int i = 0; i < [2]; i++) {
  tone(6, melody[[3]]);
  delay(500);
}

Drag options to blanks, or click blank then click option'

A262, 294, 330, 349

B4

Ci

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong loop count.

Using fixed index instead of loop variable.

The array has 4 notes. The loop runs 4 times. Using i as index plays each note in order.