diff --git a/led_bikewheel.ino b/led_bikewheel.ino
index b581a2b..2a3faa1 100644
--- a/led_bikewheel.ino
+++ b/led_bikewheel.ino
@@ -1,5 +1,9 @@
-// #define NEOPIXEL
-// #define TEST_STRIPES
+// uncomment next line if you want to use NEOPIXEL (3 pins) instead of APA102 (4 pins)
+//#define NEOPIXEL
+// uncomment next line for image test modus, this will change the segments every 1/2 second
+//#define TEST_STRIPES
+
+#include "images.h"
 
 #ifdef NEOPIXEL
 #include <Adafruit_NeoPixel.h>
@@ -9,21 +13,31 @@
 #include <APA102.h>
 #endif
 
-#include "images.h"
+// CONFIGURE please configure next lines depending on your stripe arragmentment
+#define HALL_PIN 2    // digital pin of hall sensor
+#define ROUND_COUNT 1 // how many rounds to take time (minimum 1)
 
-#define HALL_PIN 2
-#define ROUND_COUNT 2
+#define NUM_SEGMENTS 360 // how much segements to divide image (gives an angle precision of 360 / NUM_SEGMENTS)
+#define LED_COUNT 26     // how many LEDs on one stripe
+#define LED_STRIPES 4    // how many LEDs stripes on wheel
 
-// Define which pins to use.
-#define LED_DATA_PIN 10
-#define LED_CLOCK_PIN 11
+int strip_matrix_offset[LED_STRIPES] = {0, 0, (NUM_SEGMENTS / 2), (NUM_SEGMENTS / 2)}; // given offset in segments for stripe
+bool strip_matrix_invert[LED_STRIPES] = {false, true, false, true};                    // set LEDs in revert order for stripe
+// \CONFIGURE
 
-#define NUM_SEGMENTS 360
-#define LED_COUNT 26
-#define LED_STRIPES 4
 
-int strip_matrix_offset[LED_STRIPES] = {0, 0, (NUM_SEGMENTS / 2), (NUM_SEGMENTS / 2)};
-bool strip_matrix_invert[LED_STRIPES] = {false, true, false, true};
+// LED stripes
+#ifdef NEOPIXEL
+#define LED_PIN 6     // data pin for neopixel LED stripe
+#define BRIGHTNESS 10 // brightness for LED strip [0-255]
+Adafruit_NeoPixel ledStrip(LED_COUNT *LED_STRIPES, LED_PIN, NEO_GRB + NEO_KHZ800);
+#else
+#define LED_DATA_PIN 10  // data pin for LED strip
+#define LED_CLOCK_PIN 11 // clock pin for LED strip
+APA102<LED_DATA_PIN, LED_CLOCK_PIN> ledStrip;
+#define BRIGHTNESS 1     // brightness for LED strip [0-31]
+rgb_color color_buffer[LED_COUNT * LED_STRIPES]; // color buffer to write to LED stripe
+#endif
 
 float passed = 0;
 int current_image_index = 0;
@@ -33,17 +47,6 @@ uint8_t *current_pixels;
 
 int current_state = 0;
 
-// Create an object for writing to the LED strip.
-#ifdef NEOPIXEL
-#define LED_PIN 6
-#define BRIGHTNESS 10
-Adafruit_NeoPixel ledStrip(LED_COUNT *LED_STRIPES, LED_PIN, NEO_GRB + NEO_KHZ800);
-#else
-APA102<LED_DATA_PIN, LED_CLOCK_PIN> ledStrip;
-#define BRIGHTNESS 1
-rgb_color color_buffer[LED_COUNT * LED_STRIPES];
-#endif
-
 void setup()
 {
   Serial.begin(115200);
@@ -63,9 +66,8 @@ void loop()
   float start = micros();
   int count = 0;
   bool change = false;
-  while (count < ROUND_COUNT)
+  while (count <= ROUND_COUNT)
   {
-    // check HALL if turned
     if (digitalRead(HALL_PIN) == LOW)
     {
       digitalWrite(LED_BUILTIN, HIGH);
@@ -81,7 +83,6 @@ void loop()
       change = false;
     }
 
-    // calc led for last turn
     float current_diff = micros() - start;
 
 #ifndef TEST_STRIPES