Reference.Tone History

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November 13, 2013, at 12:39 PM by Scott Fitzgerald -
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It is not possible to generate tones lower than 31Hz. For technical details, see [https://code.google.com/p/rogue-code/wiki/ToneLibraryDocumentation#Ugly_Details | Brett Hagman's notes].

to:

It is not possible to generate tones lower than 31Hz. For technical details, see Brett Hagman's notes.

November 13, 2013, at 12:39 PM by Scott Fitzgerald -
Changed lines 10-11 from:

It is not possible to generate tones lower than 31Hz. For technical details, see [[https://code.google.com/p/rogue-code/wiki/ToneLibraryDocumentation#Ugly_Details | Brett Hagman's notes].

to:

It is not possible to generate tones lower than 31Hz. For technical details, see [https://code.google.com/p/rogue-code/wiki/ToneLibraryDocumentation#Ugly_Details | Brett Hagman's notes].

November 13, 2013, at 12:39 PM by Scott Fitzgerald -
Added lines 10-11:

It is not possible to generate tones lower than 31Hz. For technical details, see [[https://code.google.com/p/rogue-code/wiki/ToneLibraryDocumentation#Ugly_Details | Brett Hagman's notes].

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January 03, 2011, at 07:52 PM by David A. Mellis -
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frequency: the frequency of the tone in hertz

duration: the duration of the tone in milliseconds (optional)

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frequency: the frequency of the tone in hertz - unsigned int

duration: the duration of the tone in milliseconds (optional) - unsigned long

March 08, 2010, at 04:56 PM by Tom Igoe -
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March 08, 2010, at 04:56 PM by Tom Igoe -
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March 08, 2010, at 04:24 PM by Tom Igoe -
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NOTE: if you want to play different pitches on multiple pins, you need to call noTone() on one pin before calling tone() on the next pin.

February 12, 2010, at 03:20 PM by David A. Mellis -
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Use of the tone() function will interfere with PWM output on pins 3 and 11 (on boards other than the Mega).

February 09, 2010, at 01:56 PM by Tom Igoe -
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February 09, 2010, at 01:55 PM by Tom Igoe -
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February 09, 2010, at 01:54 PM by Tom Igoe -
January 09, 2010, at 05:51 PM by David A. Mellis -
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On most Arduino boards, only one tone can be generated at a time. If a tone is already playing on a different pin, the call to tone() will have no effect. If the tone is playing on the same pin, the call will set its frequency.

to:

Only one tone can be generated at a time. If a tone is already playing on a different pin, the call to tone() will have no effect. If the tone is playing on the same pin, the call will set its frequency.

January 09, 2010, at 05:39 PM by David A. Mellis -
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frequency: the frequency in hertz of the tone

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frequency: the frequency of the tone in hertz

January 09, 2010, at 05:39 PM by David A. Mellis -
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tone()

Description

Generates a square wave of the specified frequency (and 50% duty cycle) on a pin. A duration can be specified, otherwise the wave continues until a call to noTone(). The pin can be connected to a piezo buzzer or other speaker to play tones.

On most Arduino boards, only one tone can be generated at a time. If a tone is already playing on a different pin, the call to tone() will have no effect. If the tone is playing on the same pin, the call will set its frequency.

Syntax

tone(pin, frequency)
tone(pin, frequency, duration)

Parameters

pin: the pin on which to generate the tone

frequency: the frequency in hertz of the tone

duration: the duration of the tone in milliseconds (optional)

Returns

nothing

See also

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