Alice-Maria PÎRVULESCU (101523)

Cu ajutorul unor LEDuri, un motor care le va roti si faptul ca ochiul uman nu poate observa mai mult de 10 imagini pe secunda voi crea iluzia persistentei unui cuvant.

* Arduino Uno * DC Motor * +9V battery * Led Band * 1KΩ resistors

 
#include <FastLED.h>

#define LED_PIN     7
#define NUM_LEDS    8

int ledPin =  13;    
int state = 0;  

CRGB leds[NUM_LEDS];

double delayTime = 1; 
double charBreak = 2.5; 


void setup(){
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
  pinMode(ledPin, OUTPUT);    
}
  
  int a[] = {1, 6, 26, 6, 1};
  int b[] = {31, 21, 21, 10, 0};
  int c[] = {14, 17, 17, 10, 0};
  int d[] = {31, 17, 17, 14, 0};
  int e[] = {31, 21, 21, 17, 0};
  int f[] = {31, 20, 20, 16, 0};
  int g[] = {14, 17, 19, 10, 0};
  int h[] = {31, 4, 4, 4, 31};
  int i[] = {0, 17, 31, 17, 0};
  int j[] = {0, 17, 30, 16, 0};
  int k[] = {31, 4, 10, 17, 0};
  int l[] = {31, 1, 1, 1, 0};
  int m[] = {31, 12, 3, 12, 31};
  int n[] = {31, 12, 3, 31, 0};
  int o[] = {14, 17, 17, 14, 0};
  int p[] = {31, 20, 20, 8, 0};
  int qQ[] = {14, 17, 19, 14, 2};
  int r[] = {31, 20, 22, 9, 0};
  int s[] = {8, 21, 21, 2, 0};
  int t[] = {16, 16, 31, 16, 16};
  int u[] = {30, 1, 1, 30, 0};
  int v[] = {24, 6, 1, 6, 24};
  int w[] = {28, 3, 12, 3, 28};
  int x[] = {17, 10, 4, 10, 17};
  int y[] = {17, 10, 4, 8, 16};
  int z[] = {19, 21, 21, 25, 0};
  
  int eos[] = {0, 1, 0, 0, 0};
  int excl[] = {0, 29, 0, 0, 0};
  int ques[] = {8, 19, 20, 8, 0};

void displayLine(int line){
  int myline;
  myline = line;
  if (myline>=16) {leds[1] = CRGB(0, 0, 255); myline-=16;}
    else {leds[1] = CRGB::Black;}
  if (myline>=8)  {leds[2] = CRGB(0, 0, 255); myline-=8;} 
    else {leds[2] = CRGB::Black;}
  if (myline>=4)  {leds[3] = CRGB(0, 0, 255); myline-=4;}  
    else {leds[3] = CRGB::Black;}
  if (myline>=2)  {leds[4] = CRGB(0, 0, 255); myline-=2;}
    else {leds[4] = CRGB::Black;}
  if (myline>=1)  {leds[5] = CRGB(0, 0, 255); myline-=1;} 
    else {leds[5] = CRGB::Black;}
  leds[7] = CRGB(255, 0, 0);
    FastLED.show();

}

void displayChar(char ch){
  if (ch == 'a'){for (int i = 0; i <5; i++){displayLine(a[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'b'){for (int i = 0; i <5; i++){displayLine(b[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'c'){for (int i = 0; i <5; i++){displayLine(c[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'd'){for (int i = 0; i <5; i++){displayLine(d[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'e'){for (int i = 0; i <5; i++){displayLine(e[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'f'){for (int i = 0; i <5; i++){displayLine(f[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'g'){for (int i = 0; i <5; i++){displayLine(g[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'h'){for (int i = 0; i <5; i++){displayLine(h[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'i'){for (int it = 0; it <5; it++){displayLine(i[it]);delay(delayTime);}displayLine(0);}
  if (ch == 'j'){for (int i = 0; i <5; i++){displayLine(j[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'k'){for (int i = 0; i <5; i++){displayLine(k[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'l'){for (int i = 0; i <5; i++){displayLine(l[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'm'){for (int i = 0; i <5; i++){displayLine(m[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'n'){for (int i = 0; i <5; i++){displayLine(n[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'o'){for (int i = 0; i <5; i++){displayLine(o[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'p'){for (int i = 0; i <5; i++){displayLine(p[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'q'){for (int i = 0; i <5; i++){displayLine(qQ[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'r'){for (int i = 0; i <5; i++){displayLine(r[i]);delay(delayTime);}displayLine(0);}
  if (ch == 's'){for (int i = 0; i <5; i++){displayLine(s[i]);delay(delayTime);}displayLine(0);}
  if (ch == 't'){for (int i = 0; i <5; i++){displayLine(t[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'u'){for (int i = 0; i <5; i++){displayLine(u[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'v'){for (int i = 0; i <5; i++){displayLine(v[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'w'){for (int i = 0; i <5; i++){displayLine(w[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'x'){for (int i = 0; i <5; i++){displayLine(x[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'y'){for (int i = 0; i <5; i++){displayLine(y[i]);delay(delayTime);}displayLine(0);}
  if (ch == 'z'){for (int i = 0; i <5; i++){displayLine(z[i]);delay(delayTime);}displayLine(0);}
  if (ch == '!'){for (int i = 0; i <5; i++){displayLine(excl[i]);delay(delayTime);}displayLine(0);}
  if (ch == '?'){for (int i = 0; i <5; i++){displayLine(ques[i]);delay(delayTime);}displayLine(0);}
  if (ch == '.'){for (int i = 0; i <5; i++){displayLine(eos[i]);delay(delayTime);}displayLine(0);}
  delay(charBreak);
}

  void displayString(char* s){
  for (int i = 0; i<=strlen(s); i++){
  displayChar(s[i]);
  }
}

void loop()
{
displayString("hello");
} 

Persistența imaginii este proprietatea ochiului nostru de a vedea în continuare (sau iluzia de a vedea) o forma a ceva, pentru o fracțiune de secundă chiar și după ce obiectul a fost mutat. Proiectul se bazeaza pe vederea umana. Nu am reusit sa fac videoclip deoarece aceasta iluzie nu se pastra, iar pentru a face pozele am folosit optiunea de fotografie continua a camerei.