72 led shiftregister

Forum 2005-2010 (read only) General Exhibition
1

I made a 72 bit shiftregister with 12 595's.

I do not use the shiftout function. Sometimes is don't want to shift out a byte, but just 3 bits (RGB). Therefore I made my function for shifting out the bits.

const int latchPin = 11; //Pin connected to latch pin (ST_CP) of 74HC595
const int clockPin = 10; //Pin connected to clock pin (SH_CP) of 74HC595
const int dataPin = 9; //Pin connected to Data in (DS) of 74HC595
boolean aan[] = {
  true};
boolean uit[] = {
  false};
boolean groen[] = {
  0,1,0};
boolean rood[] = {
  0,0,1};
boolean blauw[] = {
  1,0,0};
boolean violet[] = {
  1,0,1};
boolean turk[] = {
  1,1,0};
boolean oranje[] = {
  0,1,1};
boolean wit[] = {
  1,1,1};
boolean zwart[] = {
  0,0,0};

int pauze = 70;
int mode = 0;
long lasttime = 0;
const int lengte = 72;

boolean bar[lengte +1] = {
  0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 
  0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 
  0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0};



void setup() {
  //set pins to output because they are addressed in the main loop
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);  
  pinMode(clockPin, OUTPUT);
  shiftdata(lengte, bar);

  Serial.begin(9600);
  Serial.println("start, debug");
}

void loop() {

  switch (mode){
  case 0:
  drop();
  break;
  case 1:
  sinnu1();
  break;
  case 2:
    willekeurig();
    break;
  case 3:
    sinnu3();
    break;
  case 4:
    sinnu4();
    break;
  default:
    mode = 0;
  }
if (millis() >= lasttime + 10000){
  mode ++;
  lasttime = millis();
}


}

void shiftdata(int lengte, boolean data[]){
  digitalWrite(latchPin, LOW);

  for (int i=0; i<lengte; i++){
    digitalWrite(dataPin, data[i]);//bit klaarzetten
    digitalWrite(clockPin, HIGH);//bit shiften
    digitalWrite(clockPin, LOW);
  }
  digitalWrite(latchPin, HIGH);// toon data
}

void sinnu1(){
  int positie = 36 * sin(millis()/250.0) + 36;
  int positie2 = 36 * cos(millis()/250.0) + 36;
  for (int j=0; j<=lengte; j++){
    if (((j <= positie) && (j >= positie2)) || ((j >= positie) && (j <= positie2))){
      bar[j] = 1;
    }
    else
    {
      bar[j] = 0;
    }
  }
  shiftdata(lengte, bar);
}

void sinnu3(){
  int positie = 3*int(12 * sin(millis()/250.0) + 12);
  for (int j=0; j<=lengte; j++){
    if (j== positie){
      bar[j] = 1;
    }
    else
    {
      bar[j] = 0;
    }
  }

  positie = 3*int(12 * sin(millis()/250.0 + 0.2) + 12)+1;
  for (int j=0; j<=lengte; j++){
    if (j== positie){
      bar[j] = 1;
    }
  }

  positie = 3*int(12 * sin(millis()/250.0 + 0.4) + 12)+2;
  for (int j=0; j<=lengte; j++){
    if (j== positie){
      bar[j] = 1;
    }
  }
  shiftdata(lengte, bar);
}



void sinnu4(){
  int positie = 36 * sin(millis()/200.0) + 36;
  for (int j=0; j<=lengte; j++){
    if (j== positie){
      bar[j] = 1;
    }
    else
    {
      bar[j] = 0;
    }
  }
  shiftdata(lengte, bar);

  positie = 36 * sin(millis()/225.0) + 36;
  for (int j=0; j<=lengte; j++){
    if (j== positie){
      bar[j] = 1;
    }
  }
  shiftdata(lengte, bar);

  positie = 36 * sin(millis()/250.0) + 36;
  for (int j=0; j<=lengte; j++){
    if (j== positie){
      bar[j] = 1;
    }
  }
  shiftdata(lengte, bar);

  positie = 36 * sin(millis()/275.0) + 36;
  for (int j=0; j<=lengte; j++){
    if (j== positie){
      bar[j] = 1;
    }
  }
  shiftdata(lengte, bar);
}



void willekeurig(){
  bar[random(lengte+1)] = random(2);
  shiftdata(lengte, bar);
  //delay(pauze);
}



void drop(){
  int kleur = random(3);
  switch (kleur){
  case 0:
    shiftdata(3,rood);

    delay(pauze);
    shiftdata(3,rood);
    break;
  case 1:
    shiftdata(3,groen);

    delay(pauze);
    shiftdata(3,groen);
    break;
  case 2:
    shiftdata(3,blauw);

    delay(pauze);
    shiftdata(3,blauw);
    break;
  default:
    shiftdata(3,zwart);
  }
  delay(pauze);
}