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4. Strobe lights

This is another sketch for strobe lights.

#include <Adafruit_NeoPixel.h>
#define PIN 2
#define NUM_LEDS 8
// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() { 
  // Slower:
  // Strobe(0xff, 0x77, 0x00, 10, 100, 1000);
  // Fast:
  Strobe(0xff, 0xff, 0xff, 10, 50, 1000);
}

void Strobe(byte red, byte green, byte blue, int StrobeCount, int FlashDelay, int EndPause){
  for(int j = 0; j < StrobeCount; j++) {
    setAll(red,green,blue);
    showStrip();
    delay(FlashDelay);
    setAll(0,0,0);
    showStrip();
    delay(FlashDelay);
  }
 
 delay(EndPause);
}
// *** REPLACE TO HERE ***

void showStrip() {
   strip.show();
}

void setPixel(int Pixel, byte red, byte green, byte blue) {
   strip.setPixelColor(Pixel, strip.Color(red, green, blue));

}

void setAll(byte red, byte green, byte blue) {
  for(int i = 0; i < NUM_LEDS; i++ ) {
    setPixel(i, red, green, blue); 
  }
  showStrip();
}
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