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https://chatgpt.com/share/a0c8ab01-2ae3-478b-a57f-c429f28a41d5

code plan crteate a code i such a way that the built in rgb leds on board of arduino nanao3
1 wiill blink one by one with basic color red green blue to and fro the
each led wil blink twicee with yellow, cyan,magenta twice
3then all leds will simulteneosly blink  7 times with raibow color
code by arvind patil;created using chatgpt the discusion is given in the link at top

19/08/24

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#define LED_PIN 2
#define NUM_LEDS 3

// Include the necessary libraries
#include <FastLED.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

CRGB leds[NUM_LEDS];

// Set the LCD address to 0x27 for a 20 chars and 4 line display
LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  // Initialize the LED strip
  FastLED.addLeds<NEOPIXEL, LED_PIN>(leds, NUM_LEDS);
  FastLED.clear();
  
  // Initialize Serial communication
  Serial.begin(9600);
  
  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  
  // Display startup message
  Serial.println("Starting LED sequence...");
  lcd.setCursor(0, 0);
  lcd.print("Starting LED sequence...");
}

void loop() {
  // Chase red
  displayAction("Chasing Red...");
  chaseColor(CRGB::Red);
  delay(2000);

  // Chase green
  displayAction("Chasing Green...");
  chaseColor(CRGB::Green);
  delay(2000);

  // Chase blue
  displayAction("Chasing Blue...");
  chaseColor(CRGB::Blue);
  delay(2000);

  // Blink each LED with yellow color twice
  displayAction("Blinking Yellow...");
  blinkEachColorTwice(CRGB::Yellow);
  
  // Blink each LED with cyan color twice
  displayAction("Blinking Cyan...");
  blinkEachColorTwice(CRGB::Cyan);
  
  // Blink each LED with magenta color twice
  displayAction("Blinking Magenta...");
  blinkEachColorTwice(CRGB::Magenta);
  
  // Blink all LEDs simultaneously 7 times with rainbow colors
  displayAction("Rainbow Blink 7x...");
  blinkRainbowSimultaneously(7);
}

void displayAction(const char* action) {
  Serial.println(action);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(action);
}

void chaseColor(CRGB color) {
  // Move forward
  for(int i = 0; i < NUM_LEDS; i++) {
    leds[i] = color;
    FastLED.show();
    delay(500);
    leds[i] = CRGB::Black; // Turn off the LED
  }

  // Move backward
  for(int i = NUM_LEDS - 1; i >= 0; i--) {
    leds[i] = color;
    FastLED.show();
    delay(500);
    leds[i] = CRGB::Black; // Turn off the LED
  }
}

void blinkEachColorTwice(CRGB color) {
  for (int i = 0; i < NUM_LEDS; i++) {
    // Blink twice
    for (int j = 0; j < 2; j++) {
      leds[i] = color;
      FastLED.show();
      delay(250);
      leds[i] = CRGB::Black;
      FastLED.show();
      delay(250);
    }
  }
}

void blinkRainbowSimultaneously(int times) {
  for (int i = 0; i < times; i++) {
    // Display rainbow colors
    for (int j = 0; j < NUM_LEDS; j++) {
      leds[j] = CHSV(j * (255 / NUM_LEDS), 255, 255);
    }
    FastLED.show();
    delay(250);

    // Turn off all LEDs
    FastLED.clear();
    FastLED.show();
    delay(250);
  }
}