POV ( Persistance of Vision ) Arduino

Parts needed :
: Arduino uno x 1
: led x 5
: 1k resistor x 5

Step 1: Wiring

Connect all the wire as shown in the figure :
Digital pin 2 to led 1
Digital pin 3 to led 2
Digital pin 4 to led 3
Digital pin 5 to led 4
Digital pin 6 to led 5

don't forget the resister ...!
.............................................................................................................................
Possible improvement

# custom shield for arduino
# adding battery
# adding more led 's
.............................................................................................................................
and upload the sketch and you are left with an amazing pov display...:)

Step 2: Sketch

Change in the " loop " function the text !!!!

    CODE :

int _[] = {0,0,0,0,0, 0,0,0,0,0, 0,0,0,0,0};

int A[] = {0,1,1,1,1, 1,0,1,0,0, 0,1,1,1,1};

int B[] = {1,1,1,1,1, 1,0,1,0,1, 0,1,0,1,0};

int C[] = {0,1,1,1,0, 1,0,0,0,1, 1,0,0,0,1};

int D[] = {1,1,1,1,1, 1,0,0,0,1, 0,1,1,1,0};

int E[] = {1,1,1,1,1, 1,0,1,0,1, 1,0,1,0,1};

int F[] = {1,1,1,1,1, 1,0,1,0,0, 1,0,1,0,0};

int G[] = {0,1,1,1,0, 1,0,1,0,1, 0,0,1,1,0};

int H[] = {1,1,1,1,1, 0,0,1,0,0, 1,1,1,1,1};

int I[] = {0,0,0,0,1, 1,0,1,1,1, 0,0,0,0,1};

int J[] = {1,0,0,0,0, 1,0,0,0,1, 1,1,1,1,1};

int K[] = {1,1,1,1,1, 0,0,1,0,0, 0,1,0,1,1};

int L[] = {1,1,1,1,1, 0,0,0,0,1, 0,0,0,0,1};

int M[] = {1,1,1,1,1, 0,1,1,0,0, 0,1,1,1,1};

int N[] = {1,1,1,1,1, 1,0,0,0,0, 0,1,1,1,1};

int O[] = {0,1,1,1,0, 1,0,0,0,1, 0,1,1,1,0};

int P[] = {1,1,1,1,1, 1,0,1,0,0, 0,1,0,0,0};

int Q[] = {0,1,1,1,1, 1,0,0,1,1, 0,1,1,1,1};

int R[] = {1,1,1,1,1, 1,0,1,0,0, 0,1,0,1,1};

int S[] = {0,1,0,0,1, 1,0,1,0,1, 1,0,0,1,0};

int T[] = {1,0,0,0,0, 1,1,1,1,1, 1,0,0,0,0};

int U[] = {1,1,1,1,1, 0,0,0,0,1, 1,1,1,1,1};

int V[] = {1,1,1,1,0, 0,0,0,0,1, 1,1,1,1,0};

int W[] = {1,1,1,1,0, 0,0,1,1,0, 1,1,1,1,0};

int X[] = {1,1,0,1,1, 0,0,1,0,0, 1,1,0,1,1};

int Y[] = {1,1,0,0,0, 0,0,1,0,0, 1,1,1,1,1};

int Z[] = {1,0,0,1,1, 1,0,1,0,1, 1,1,0,0,1};

int letterSpace;

int dotTime;

void setup()

{

  // setting the ports of the leds to OUTPUT

  pinMode(2, OUTPUT);

  pinMode(3, OUTPUT);

  pinMode(4, OUTPUT);

  pinMode(5, OUTPUT);

  pinMode(6, OUTPUT);

  // defining the space between the letters (ms)

  letterSpace = 6;

  // defining the time dots appear (ms)

  dotTime = 3;

}

void printLetter(int letter[])

{

  int y;

  // printing the first y row of the letter

  for (y=0; y<5; y++)

  {

    digitalWrite(y+2, letter[y]);

  }

  delay(dotTime);

  // printing the second y row of the letter

  for (y=0; y<5; y++)

  {

    digitalWrite(y+2, letter[y+5]);

  }

  delay(dotTime);

  // printing the third y row of the letter

  for (y=0; y<5; y++)

  {

    digitalWrite(y+2, letter[y+10]);

  }

  delay(dotTime);

  // printing the sspace between the letters

  for (y=0; y<5; y++)

  {

    digitalWrite(y+2, 0);

  }

  delay(letterSpace);

}

void loop()

{

  // you can print your own text by modifing here :) !!!!!!!!!!!!!!!!

  printLetter(H);

  printLetter(U);

  printLetter(A);

  printLetter(_);

  printLetter(_);

 

}

Vu Meter ( Arduino )

Schematic :



Code :

int timp = 10; 

int song = 10  ;

int val  = 0 ;

void setup() {

  for (int i=2;i<=13;i++)

  {

  pinMode (i, OUTPUT);

  }

  Serial.begin(9600);

}

void loop() {

    delay(timp);

    val = analogRead(A0);

    Serial.print("Valoare audio: ");

    Serial.println(val);

  

  if ( (song *1)  < val){

    digitalWrite (13 ,HIGH);} 

  else {

    digitalWrite (13 ,LOW);}

  

  if ( (song *2)  < val) {

    digitalWrite (12 ,HIGH);} 

  else {

    digitalWrite (12 ,LOW);}

    

  if ( (song *3)  < val) {

    digitalWrite (11 ,HIGH);} 

  else {

    digitalWrite (11 ,LOW);}

    

  if ( (song *4)  < val) {

    digitalWrite (10 ,HIGH);} 

  else {

    digitalWrite (10 ,LOW);}

    

  if ( (song *5)  < val) {

    digitalWrite (9  ,HIGH);} 

  else {

    digitalWrite (9  ,LOW);}

    

  if ( (song *6)  < val) {

    digitalWrite (8  ,HIGH);} 

  else {

    digitalWrite (8  ,LOW);}

    

  if ( (song *7)  < val) {

    digitalWrite (7  ,HIGH);} 

  else {

    digitalWrite (7  ,LOW);}

    

  if ( (song *8)  < val) {

    digitalWrite (6  ,HIGH);} 

  else {

    digitalWrite (6  ,LOW);}

    

  if ( (song *9)  < val) {

    digitalWrite (5  ,HIGH);} 

  else {

    digitalWrite (5  ,LOW);}

    

  if ( (song *10) < val) {

    digitalWrite (4  ,HIGH);} 

  else {

    digitalWrite (4  ,LOW);}

    

  if ( (song *11) < val) {

    digitalWrite (3  ,HIGH);} 

  else {

    digitalWrite (3  ,LOW);}

    

  if ( (song *12) < val) {

    digitalWrite (2  ,HIGH);} 

  else {

    digitalWrite (2  ,LOW);}

  

} // end loop