   analogWrite(led, led_vals[index]);
   rgb = hueToRgb(rgb_vals[index]);
   strip.setPixelColor(0, strip.Color(rgb.r, rgb.g, rgb.b));
+  strip.setPixelColor(1, strip.Color(rgb.r, rgb.g, rgb.b));
   strip.show();
 }
 


  pinMode(A0, OUTPUT);
  digitalWrite(A0, HIGH);  // provide an easy +3V reference for pots on A0
  
  // activate a hidden feature pullup on PTB2 to stabilize color when input is floating
  *((unsigned int *)0x4004A008) |= 0x103;
}



uint8_t led_vals[LOOP_LENGTH];
uint8_t rgb_vals[LOOP_LENGTH];

Adafruit_NeoPixel strip = Adafruit_NeoPixel(2, LED_BUILTIN_RGB, NEO_GRB + NEO_KHZ800);

int led = A2;
int ledInput = A1;
