#include <Adafruit_NeoPixel.h>
Adafruit_NeoPixel kruh(16,A0,NEO_GRB + NEO_KHZ800);

long modra= kruh.Color(0,0,255);
void setup() {
  // put your setup code here, to run once:
kruh.begin();
pinMode(A1, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:


int a = analogRead(A1);
a = map(a,0,1023,0,16);
kruh.fill(kruh.Color(0,0,255),0,a);
kruh.fill(kruh.Color(0,0,0),a,0);
kruh.show();
}