Tone() function - Arduino

Arduino - The Tone function

The Tone function is an easy way to make some noise with your Arduino.

 

A basic circuit. Example 1

The resistor is 100 Ohms.

Just need a Piezo speaker, breadboard & an Uno

 

The black leads connect to GND

 

 we need just 2 arguments
  1 pin
  2 frequency in Hz - determines pitch

 

tone(Pin, Hz)

tone(piezoPin, 100)

The frequency can be any number between 0 and 65,535.

Note that most noises that can be heard with the human ears range between 2k & 5k
 

Here is the code:

//-------------------------------------

// demo of tone function

// variables
int piezoPin = 8;

void setup(){
}

void loop(){
 
  /*
  we need just 2 arguments
  1 pin
  2 frequency in Hz - determines pitch
  */
  // create a tone ... tone();
  tone(piezoPin, 100); // play around with this last number
 
}

//---------------------------------------------------

 

 Example 2

Creating a beat.

Add a duration period - the last parameter (and a delay to your code).

 

The tone function is

tone(Pin, Hz,duration in milliseconds)

tone(piezoPin, 100, 500)

 

Here is an example of your new code

 

//----------------

// demo of tone function 2

// variables
int piezoPin = 8;

void setup(){
}

void loop(){
 
  /*
  we need just 3 arguments
  1 pin
  2 frequency in Hz - determines pitch
  3 duration
  */
  // create a tone ... tone();
  tone(piezoPin, 3000, 500);
 
  delay(1500);
 
}

//-----------------------------

 

Note, to add 1 second between each sound

you need to use a duration of 500ms, and a delay of 1500ms

 

 

Limitations

Don't use analogWrite on pins 3 & 11 if you are using the tone function

 

 Links

+ https://www.programmingelectronics.com/an-easy-way-to-make-noise-with-arduino-using-tone/

+ https://www.youtube.com/watch?v=1_LMAgO14z0

+  Active buzzers

 

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+ Arduino Index 

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