Turn signal

/* Turn signal
 *
 *  By: Andrew Tuline
 *  Date: Nov 29, 2019
 *
 *  To re-create a turn signal, both with delay based code (ugh), as well as non-delay based code. If you want to use buttons, you need to get rid of those delays.
 *
 */

#include <FastLED.h>

#define LED_TYPE  WS2812B  //TYPE OF LED
#define COLOUR_ORDER GRB   //SEQUENCA OF DATA STREAM
#define NUM_LEDS 10       // Number of LEDS
#define DATA_PIN D5       // D8 D1 mini

CRGB leds[NUM_LEDS];



void setup() {

  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOUR_ORDER>(leds, NUM_LEDS); // for GRB LEDs
  FastLED.setBrightness(150);

} // setup()



void loop() {

//  method1();
  method2();

} // loop()



void method1() {                              // This uses delays and is nice and simple to understand for beginners.

  for(int i=0;i<NUM_LEDS;i++){
   leds[i].setRGB(100,42,0);
     FastLED.show();
     delay(50); }

 for(int i=0;i<NUM_LEDS;i++){
   leds[i].setRGB(0,0,0);
     FastLED.show();
     delay(50); }

}



void method2() {                              // This doesn't use delays, but takes a bit more thought.

  int myNum = (millis() / 50) % 20;					// Realtime counter from 0 to 19 (or 2 * NUM_LEDS).
  leds[myNum %10] = (myNum < 10) ? 0 : 0x642a00;    // Assigns value to leds of 0 through 9 and if myNUM > 9, then give it a colour.
  FastLED.show();

}