Lab 7 - Buzzer

Purpose:
To make the buzzer buzz the tune of 'Twinkle Twinkle Little Star'

Equipment:
Piezo Element (x1)
wires (x4)

Program Details:
i used the one off newinnovators.ca

Time to Program and Complete:
5 mintues

Results:
N/A



Photo/Video Proof:



























Program:
int speakerPin = 9; 
int length = 15;  
char notes[] = "ccggaagffeeddc ";   
int beats[] = { 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 4 };   
int tempo = 300;   
void playTone(int tone, int duration)    
{  
  for (long i = 0; i < duration * 1000L; i += tone * 2)    
  {  
     digitalWrite(speakerPin, HIGH);  
     delayMicroseconds(tone);   
     digitalWrite(speakerPin, LOW);   
     delayMicroseconds(tone);   
   }  
}  
 void playNote(char note, int duration)   
 {  
   char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };   
   int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 956 };   
   for (int i = 0; i < 8; i++)    
   {  
     if (names[i] == note)    
     {  
       playTone(tones[i], duration);  
     }  
   }  
 }  
 void setup()   
 {  
   pinMode(speakerPin, OUTPUT);   
 }  
 void loop()    
 {  
   for (int i = 0; i < length; i++)   
   {  
     if (notes[i] == ' ')   
     {  
       delay(beats[i] * tempo);   
     }    
     else   
     {  
       playNote(notes[i], beats[i] * tempo);  
     }  
     delay(tempo / 2);    
   }  
 }
Program Modifications:
N/A

Helpful Tips:
Make sure positive is positive

References:
nweinnovators.ca