Robot Art Show

content:

Charge-  positive and negative are carried by protons and electrons. Like charges repel each other and unlike charges attract each other. An object without a charge is neutral.

Volts- power of the protons and electrons moving trough a circut

Electrostatic Force- the attractive or repulsive force between two charged objects.

Coulomb's law-   like charges repel and opposite charges attract, with a force proportional to the product of the charges and inversely proportional to the square of the distance between them.

Resistance-  voltage applied to the electric current which flows through it

Electric Circuit- a path in which electrons from a voltage or current source flow

Voltage- the difference in electric potential between two points

Electric Current- The flow of electric charge 

Magnetic Field- a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials

Amperes-  unit of electric current to a flow.

       Power- the amount of energy transferred or converted per unit time

int speakerPin  = 3 ;

//PIN VARIABLES

//the motor will be controlled by the motor A pins on the motor driver

const int AIN1 = 13;           //control pin 1 on the motor driver for the right motor

const int AIN2 = 12;            //control pin 2 on the motor driver for the right motor

const int PWMA = 11;            //speed control pin on the motor driver for the right motor

int switchPin = 7;             //switch to turn the robot on and off

//VARIABLES

int motorSpeed = 2;       //starting speed for the motor

void setup() {

pinMode(6, OUTPUT);      // set pin  to output

pinMode(5, OUTPUT);      // set pin 8 to output

 pinMode(4, OUTPUT);  

 pinMode(2, OUTPUT);      // set pin  to output

 pinMode(1, OUTPUT);      // set pin 8 to output

 pinMode(0, OUTPUT);      // set pin 8 to output

 pinMode(speakerPin, OUTPUT);

 pinMode(switchPin, INPUT_PULLUP);   //set this as a pullup to sense whether the switch is flipped

Serial.begin(9600);                       //begin serial communication with the computer

Serial.println("Enter motor speed (0-255)... ");

}

void loop()

{

  play('a', 1);

  play('b', 1);

  play('a', 1);

  play('b', 1);

  play('a', 1);

digitalWrite(6, HIGH);

delay(100);

   digitalWrite(5, HIGH);    // Turn on the LED

  delay(100);  // Wait for 0.1 seconds

  digitalWrite(4, HIGH);    // Turn on the LED

  delay(100);  // Wait for 0.1 

  digitalWrite(2, HIGH);    // Turn on the LED

   delay(100);  // Wait for 0.1 seconds

  digitalWrite(1, HIGH);    // Turn on the LED

   delay(100);  // Wait for 0.1 seconds

  digitalWrite(0, HIGH);    // Turn on the LED

   delay(100);  // Wait for 0.1 seconds

  digitalWrite(6, LOW);

  delay(100);

  digitalWrite(5, LOW);

  delay(100);

  digitalWrite(4, LOW);

  digitalWrite(2, LOW);

  delay(100);

  digitalWrite(1, LOW);

  delay(100);

  digitalWrite(0, LOW);

  delay(100);

  digitalWrite(0, HIGH);

  delay(100);

  digitalWrite(1, HIGH);

  delay(100);

  digitalWrite(2, HIGH);

  delay(100);

  digitalWrite(4, HIGH);

  delay(100);

  digitalWrite(5, HIGH);

  delay(100);

  digitalWrite(6, HIGH);

  delay(100);

  digitalWrite(6, LOW);

  delay(100);

  digitalWrite(5, LOW);

  delay(100);

   digitalWrite(4, LOW);

  delay(100);

  digitalWrite(2, LOW);

  delay(100);

  digitalWrite(1, LOW);

  delay(100);

   digitalWrite(0, LOW);

  delay(100);

}

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

*/