#include <Adafruit_NeoPixel.h>

#define PIN            13   // Pin connected to NeoPixel data input
#define NUMPIXELS      1   // Number of NeoPixels
#define SWITCH_PIN     12   // Pin connected to the switch
#define POT_PIN        A5  // Pin connected to the potentiometer

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pixels.begin();
  pixels.clear(); // Turn off NeoPixel initially
  pixels.show();  // Display the initial state

  pinMode(SWITCH_PIN, INPUT_PULLUP); // Set the switch pin as input with internal pull-up resistor
}

void loop() {
  // Read the state of the switch
  int switchState = digitalRead(SWITCH_PIN);

  if (switchState == LOW) { // If the switch is pressed
    // Read the potentiometer value
    int potValue = analogRead(POT_PIN);
    
    // Map the potentiometer value (0-1023) to NeoPixel color range (0-255)
    int hue = map(potValue, 0, 9, 0, 255);
    
    // Set NeoPixel color
    pixels.setPixelColor(0, pixels.ColorHSV(hue, 255, 255)); // Set color based on potentiometer value
    pixels.show(); // Display the color
  } else {
    pixels.clear(); // Turn off NeoPixel when the switch is not pressed
    pixels.show();  // Display the off state
  }
}