Robot Art Show

Noted Code

/*

  SparkFun Inventor’s Kit

  Circuit 1A-Blink

  Turns an LED connected to pin 13 on and off. Repeats forever.

  This sketch was written by SparkFun Electronics, with lots of help from the Arduino community.

  This code is completely free for any use.

  View circuit diagram and instructions at: https://learn.sparkfun.com/tutorials/sparkfun-inventors-kit-experiment-guide---v40

  Download code at: https://github.com/sparkfun/SIK-Guide-Code

*/

int speakerPin = 10;

void setup() {

pinMode(speakerPin, OUTPUT);    //set the output pin for the speaker

  pinMode(13, OUTPUT);      // Set pin 13 to output

}

void loop() {

 play('g', 2);       //ha

  digitalWrite(13, HIGH);   // Turn on the LED

  play('g', 1);       //ppy

  delay(500);              // Wait for half a second

  play('a', 4);       //birth

  digitalWrite(13, LOW);    // Turn off the LED

  play('g', 4);       //day

  delay(500);              // Wait for one second

  play('C', 4);       //to

  digitalWrite(13, HIGH);   // Turn on the LED

  play('b', 4);       //you

  delay(500);              // Wait for half a second

  play(' ', 2);       //pause for 2 beats

   digitalWrite(13, LOW);    // Turn off the LED

  play('g', 2);       //ha

  delay(500);              // Wait for half a second

  play('g', 1);       //ppy

  digitalWrite(13, HIGH);   // Turn on the LED

  play('a', 4);       //birth

   delay(500);              // Wait for half a second

  play('g', 4);       //day

   digitalWrite(13, LOW);    // Turn off the LED

  play('D', 4);       //to

   delay(500);              // Wait for half a second

 play('C', 4);       //you

   digitalWrite(13, HIGH);   // Turn on the LED

  play(' ', 2);       //pause for 2 beats

  delay(500);              // Wait for half a second

  play('g', 2);       //ha

  digitalWrite(13, LOW);    // Turn off the LED

  play('g', 1);       //ppy

  delay(500);              // Wait for half a second

  play('G', 4);       //birth 

   digitalWrite(13, HIGH);   // Turn on the LED

  play('E', 4);       //day

  delay(500);              // Wait for half a second

  play('C', 4);       //dear

  digitalWrite(13, LOW);    // Turn off the LED

  play('b', 4);       //your

  delay(500);              // Wait for half a second

  play('a', 6);       //name

    digitalWrite(13, LOW);    // Turn on the LED

  play(' ', 2);       //pause for 2 beats

delay(500);              // Wait for half a second

  play('F', 2);       //ha

  digitalWrite(13, LOW);    // Turn off the LED

  play('F', 1);       //ppy

  delay(500);              // Wait for half a second

  play('E', 4);       //birth

  digitalWrite(13, LOW);    // Turn on the LED

  play('C', 4);       //day

  delay(500);              // Wait for half a second

  play('D', 4);       //to

  digitalWrite(13, LOW);    // Turn off the LED

  play('C', 6);       //you

  digitalWrite(13, HIGH);    // Turn on the LED

  delay(500);              // Wait for one second

  while (true) {}     //get stuck in this loop forever so that the song only plays once

}

void play( char note, int beats)

{

  int numNotes = 14;  // number of notes in our note and frequency array (there are 15 values, but arrays start at 0)

  //Note: these notes are C major (there are no sharps or flats)

 //this array is used to look up the notes

  char notes[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C', 'D', 'E', 'F', 'G', 'A', 'B', ' '};

  //this array matches frequencies with each letter (e.g. the 4th note is 'f', the 4th frequency is 175)

  int frequencies[] = {131, 147, 165, 175, 196, 220, 247, 262, 294, 330, 349, 392, 440, 494, 0};

  int currentFrequency = 0;    //the frequency that we find when we look up a frequency in the arrays

  int beatLength = 150;   //the length of one beat (changing this will speed up or slow down the tempo of the song)

  //look up the frequency that corresponds to the note

  for (int i = 0; i < numNotes; i++)  // check each value in notes from 0 to 14

  {

    if (notes[i] == note)             // does the letter passed to the play function match the letter in the array?

    {

      currentFrequency = frequencies[i];   // Yes! Set the current frequency to match that note

    }

  }

  //play the frequency that matched our letter for the number of beats passed to the play function

  tone(speakerPin, currentFrequency, beats * beatLength);

  delay(beats * beatLength);  //wait for the length of the tone so that it has time to play

  delay(50);                  //a little delay between the notes makes the song sound more natural

}

/* CHART OF FREQUENCIES FOR NOTES IN C MAJOR

  Note      Frequency (Hz)

  c        131

  d        147

  e        165

  f        175

  g        196

  a        220

  b        247

  C        262

  D        294

  E        330

  F        349

  G        392

  A        440

  B        494 

  */

Circuit Diagram

Electromagnetic Lab Writeup