Surely there's an easy fix:

On my MEGA 2560 I’m trying to use the tone generator code: http://arduino.cc/en/Tutorial/Tone . First of all I copied the sketch in:
/*
Melody

Plays a melody

circuit:

  • 8-ohm speaker on digital pin 8

created 21 Jan 2010
modified 30 Aug 2011
by Tom Igoe

This example code is in the public domain.

*/
#include “pitches.h”

// notes in the melody:
int melody = {
NOTE_C4, NOTE_G3,NOTE_G3, NOTE_A3, NOTE_G3,0, NOTE_B3, NOTE_C4};

// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations = {
4, 8, 8, 4,4,4,4,4 };

void setup() {
// iterate over the notes of the melody:
for (int thisNote = 0; thisNote < 8; thisNote++) {

// to calculate the note duration, take one second
// divided by the note type.
//e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
int noteDuration = 1000/noteDurations[thisNote];
tone(8, melody[thisNote],noteDuration);

// to distinguish the notes, set a minimum time between them.
// the note’s duration + 30% seems to work well:
int pauseBetweenNotes = noteDuration * 1.30;
delay(pauseBetweenNotes);
// stop the tone playing:
noTone(8);
}
}

void loop() {
// no need to repeat the melody.
}

And then added a tab to install the library file:
/*************************************************

  • Public Constants
    *************************************************/

#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_DS8 4978

Unfortunately after adding these two and saving them, this error code shows at the bottom every time I try to compile the code…
core.a(main.cpp.o): In function main': C:\Program Files (x86)\Arduino\hardware\arduino\cores\arduino/main.cpp:5: undefined reference to setup’
C:\Program Files (x86)\Arduino\hardware\arduino\cores\arduino/main.cpp:15: undefined reference to `loop’

Please help guys!

My IDE had problems with

 #include "pitches.h"

And with

And then added a tab to install the library file:

I think they’re connected.

(It also had problems with “Smiley::cool”, but posting with code tags would have avoided that one)

AWOL:
(It also had problems with “Smiley::cool”, but posting with code tags would have avoided that one)

That’s cus you didn’t have the ArduinoForumSmiley.h library installed, so it couldn’t find the Cool() method in the static Smiley class :stuck_out_tongue:

I added a new tab called "pitches.h", put the tone definitions into it, compiled it, and got the following error message:

Binary sketch size: 3,396 bytes (of a 32,256 byte maximum)

My guess is that the sketch you posted here isn't the sketch you're compiling.

It wouldn't surprise me if you'd copied and pasted this one from a web page, but made a mistake when entering it into your IDE - maybe missed out the */ from the top comment block, which turns the entire code into a comment...?

I struggled with this until I figured out that when adding a tab with the table of tones pasted in, the tab MUST BE NAMED (or renamed) as: pitches.h That way Arduino knows where to look when the sketch code says:
#include "pitches.h"

So, can we get help from an editor to clarify the portion of the tutorial regarding adding a tab and renaming it?
Also the add a tab arrow points straight downward on my screen- not to the right as shown in tutorial.

Help us Obi-Wan ( Tom Igoe )

Best regards,
Michael Flynn

Also a tiny typo on that page. "The" should be "Then" :
"The paste in the following code:

/*************************************************

  • Public Constants
    *************************************************/

#define NOTE_B0 31
#define NOTE_C1 33

One more suggestion for the tone tutorial page- I found that the audio hardware works fine with a simple piezo disc connected to pin 8 and ground instead of the 8 ohm speaker + the correct resistor. Is the piezo a valid alternative and a safer circuit from Arduino's standpoint because there is no inductive whiplash from the speaker coil?

mic:
One more suggestion for the tone tutorial page- I found that the audio hardware works fine with a simple piezo disc connected to pin 8 and ground instead of the 8 ohm speaker + the correct resistor. Is the piezo a valid alternative and a safer circuit from Arduino's standpoint because there is no inductive whiplash from the speaker coil?

As a general rule of thumb is always better to not drive directly using Arduino a speaker but sending the out signal to an amplifier which drives the speaker. Yes the piezo option is preferable.

I will modify the image to suggest the use of a piezo. Thank you!

So, you connect an 8 ohm speaker to digital pin 8 ?

That is likely to draw a rather large current.