FastLED_3xLevel_Water_Level_Simple_Final_Code

#include <FastLED.h>

// Define the number of LEDs and the pin connected to the LED strip
#define NUM_LEDS 3
#define LED_PIN 4

// Define sensor pins
#define SENSOR_PIN_LOW A1
#define SENSOR_PIN_MEDIUM A2
#define SENSOR_PIN_HIGH A3

// Create an array to store the LED objects
CRGB leds[NUM_LEDS];

void setup() {
  Serial.begin(9600);
  // Initialize the FastLED library
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);

  // Set the sensor pins as input
  pinMode(SENSOR_PIN_LOW, INPUT);
  pinMode(SENSOR_PIN_MEDIUM, INPUT);
  pinMode(SENSOR_PIN_HIGH, INPUT);

  // Turn off all LEDs initially
  for (int i = 0; i < NUM_LEDS; i++) {
    leds[i] = CRGB::Black;
  }
  FastLED.show();
}

void loop() {
  // Read the water level sensor inputs
  bool isLow = digitalRead(SENSOR_PIN_LOW);
  bool isMedium = digitalRead(SENSOR_PIN_MEDIUM);
  bool isHigh = digitalRead(SENSOR_PIN_HIGH);

  // Determine the number of LEDs to light up
  int numLedsToLight = 0;


  if (isHigh) {
    Serial.println("HIGH");
    numLedsToLight = 3;  // High level - Turn on all 3 LEDs
  } else if (isMedium) {
    Serial.println("MED");
    numLedsToLight = 2;  // Medium level - Turn on 2 LEDs
  } else if (isLow) {
    Serial.println("LOW");
    numLedsToLight = 1;  // Low level - Turn on 1 LED
  }

  // Update the LEDs based on the water level
  for (int i = 0; i < NUM_LEDS; i++) {
    if (i < numLedsToLight) {
      leds[i] = CRGB::Blue;  // Use Blue color for all levels
    } else {
      leds[i] = CRGB::Black;  // Turn off unused LEDs
    }
  }

  // Update the LED strip
  FastLED.show();

  // Small delay for stability
  delay(100);
}