#include <NeoPixelBus.h>

#define WS_PIN     2  // On Trinket or Gemma, suggest changing this to 1
#define NUMPIXELS 113 //  113=UNHB Popular NeoPixel ring size
#define TOUCH_PIN  4  //Für Touch: 2, 4, 12, 13, 14, 15, 27

NeoPixelBus<NeoGrbFeature, Neo800KbpsMethod> strip(NUMPIXELS, WS_PIN);

int touch_value = 100;
int i = 0;
int d = 1;

RgbColor black(0);
RgbColor white(255);
RgbColor farbe;

void setup() {
  Serial.begin(115200);
  //Serial.println("Touch Test");
  
  //Serial.println("Switching off all LEDs");
  strip.Begin();
  //strip.SetBrightness(128);
  strip.ClearTo(black);
  strip.Show();
}

void loop(){
  touch_value = touchRead(TOUCH_PIN);
  
  if ( (touch_value>42) && (touch_value < 47)) {
    Serial.print("Touch @ "); 
    Serial.println(touch_value); 
    i+=d;
  }
  //Serial.println(touch_value);
  //Serial.println(i);
  strip.ClearTo(black);
  strip.SetPixelColor(i, white);
  strip.Show();
  
  if(i>=NUMPIXELS ) { d=(-1); }
  if(i<=0 ) { d=1; }
  //delay(10);
}