//define neopixel ring

#include <Adafruit_NeoPixel.h>
#define PIN        6
#define NUMPIXELS 12
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
#define DELAYVAL 100

#define PIN_ANALOG 7
#define PIN_LED 8

void show_level(int val, int val_min, int val_max){
  int c=map(val,val_min, val_max,0,NUMPIXELS); 
  pixels.clear();
  for(int i=0; i<c; i++) {
    pixels.setPixelColor(i, pixels.Color(50, 50, 0));
  }
  pixels.show();
}


void setup() {
  SerialUSB.begin(115200);
  pinMode(PIN_ANALOG, INPUT);
  pinMode(PIN_LED, OUTPUT);

  pixels.begin();  
  pixels.clear();  
}

void loop() {
  int analogValue = analogRead(PIN_ANALOG);
  SerialUSB.println(analogValue); 

  show_level(analogValue, 500, 650);

  delay(10);  
}