Playing melodies with tone() in Arduino - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the tone() function do in Arduino?

It plays a sound of a specific frequency on a speaker connected to a pin, creating a tone or note.

beginner

How do you stop a tone that is playing on a pin?

Use the noTone(pin) function to stop the sound on that pin.

beginner

What are the three parameters of tone()?

1. The pin number where the speaker is connected.<br>2. The frequency of the tone in Hertz.<br>3. (Optional) The duration in milliseconds to play the tone.

intermediate

Why do we use arrays when playing melodies with tone()?

Arrays store sequences of notes and their durations so the program can play melodies by looping through them.

intermediate

What happens if you call tone() on a pin that is already playing a tone?

The new tone replaces the old one immediately on that pin.

Which function stops a tone playing on a pin?

A tone(pin, 0)

B stopTone(pin)

C noTone(pin)

D endTone(pin)

The correct function to stop a tone is noTone(pin).

What does the second parameter of tone(pin, frequency) represent?

A Frequency in Hertz

B Duration in milliseconds

C Pin number

D Volume level

The second parameter is the frequency of the tone in Hertz.

How can you play a melody using tone()?

A By using <code>noTone()</code> repeatedly

B By calling <code>tone()</code> once with all notes

C By connecting multiple speakers to different pins

D By using arrays to store notes and durations and looping through them

Melodies are played by looping through arrays of notes and durations, calling tone() for each.

What happens if you omit the duration parameter in tone()?

A The tone plays forever until <code>noTone()</code> is called

B The tone plays for 1 second

C The tone does not play

D The tone plays for 100 milliseconds

If duration is omitted, the tone plays continuously until stopped.

Which Arduino pin type is required to use tone()?

A Analog input pins

B Digital output pins

C Power pins

D Ground pins

tone() works on digital output pins connected to a speaker or buzzer.

Explain how you would use the tone() function to play a simple melody on an Arduino.

Think about storing notes and durations, then playing each note one by one.

Describe the role of the frequency and duration parameters in the tone() function.

Frequency is like the musical note, duration is how long you hear it.