#include <Adafruit_NeoPixel.h>

#define PIN        8
#define NUMPIXELS  1
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

#define DELAYVAL 100

void setup() {
  Serial.begin(115200);
  pixels.begin();
  pixels.show();
}

int lastValue = 0;
void loop() {
  int value = analogRead(4) >> 4;
  if (lastValue != value) {
    Serial.println(value);
    lastValue = value;
  }
  pixels.clear();
  pixels.setPixelColor(0, pixels.Color(value, 0, 50));
  pixels.show(); 
  delay(DELAYVAL);
}
/*
#include <Adafruit_NeoPixel.h>

#define PIN        8
#define NUMPIXELS  1
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

#define DELAYVAL 100

void setup() {
  Serial.begin(115200);
  pixels.begin();
  pixels.show();
}


void loop() {
  pixels.setPixelColor(0,50,0,0);
    
  pixels.show(); delay(1000);
  
  pixels.setPixelColor(0,0,50,0);
  
  pixels.show(); delay(1000);
  
  pixels.setPixelColor(0,0,0,50);
  
  pixels.show();
  
  delay(1000);
}

*/