#include <Adafruit_NeoPixel.h>

#define NTC_PIN A0       // Pin connected to the NTC sensor
#define LED_PIN 2        // Pin connected to the NeoPixel Ring
#define NUM_LEDS 18      // Number of LEDs in the NeoPixel Ring

Adafruit_NeoPixel strip(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  Serial.begin(9600);
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  // Read analog input from the NTC sensor
  int ntcValue = analogRead(NTC_PIN);

  // Convert analog value to temperature using Steinhart-Hart equation or your own calibration
  float temperature = convertToTemperature(ntcValue);

  // Print temperature to serial monitor
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  // Define temperature color ranges
  int blueThreshold = 10;   // Below this temperature, color is blue
  int greenThreshold = 30;  // Between this and blueThreshold, color is green
  int orangeThreshold = 40; // Below this and greenThreshold, color is orange
  // Above this temperature, color is red

  // Set NeoPixel Ring color based on temperature
 if ( temperature < blueThreshold) {
	setRingColor(0, 0, 255, 200);
} else if ( temperature < greenThreshold) {
	setRingColor(0, 255, 0, 200);
} else if ( temperature < orangeThreshold ) {
	setRingColor(255, 165, 0, 200);
} else {
	setRingColor(255, 0, 0, 200);
}

  delay(1000); // Delay between readings
}

void setRingColor(int red, int orange, int green, int blue) {
  for (int i = 0; i < NUM_LEDS; i++) {
    strip.setPixelColor(i, strip.Color(red, orange, green, blue));
  }
  strip.show();
}

float convertToTemperature(int ntcValue) {
  // Implement your own conversion function based on NTC characteristics
  // This is a simplified example, you may need calibration
  float resistance = 10000.0 / ((1023.0 / ntcValue) - 1);
  float temperature = log(resistance / 10000.0);
  temperature /= 3950.0;
  temperature += 1.0 / (25.0 + 273.15);
  temperature = 1.0 / temperature;
  temperature -= 273.15;
  return temperature;
}