diff --git a/hoverserial.ino b/hoverserial.ino
index 5699c54..e4b62dd 100644
--- a/hoverserial.ino
+++ b/hoverserial.ino
@@ -4,10 +4,11 @@
 #include <Adafruit_SSD1306.h>
 #include <Adafruit_NeoPixel.h>
 
-#define PIN PB_5 // Pin where NeoPixels are connected
+#define PIN PB5 // Pin where NeoPixels are connected
+#define NB_LED 12 // number of LEDs
 
 // Declare our NeoPixel strip object:
-Adafruit_NeoPixel strip(32, PIN, NEO_GRB + NEO_KHZ800);
+Adafruit_NeoPixel strip(NB_LED, PIN, NEO_GRB + NEO_KHZ800);
 // Argument 1 = Number of pixels in NeoPixel strip
 // Argument 2 = Arduino pin number (most are valid)
 // Argument 3 = Pixel type flags, add together as needed:
@@ -70,6 +71,19 @@ SerialFeedback NewFeedback;
 
 int cmd1; // normalized input values. -1000 to 1000
 int cmd2;
+// ########################## colorWipe ##########################
+// Fill strip pixels one after another with a color. Strip is NOT cleared
+// first; anything there will be covered pixel by pixel. Pass in color
+// (as a single 'packed' 32-bit value, which you can get by calling
+// strip.Color(red, green, blue) as shown in the loop() function above),
+// and a delay time (in milliseconds) between pixels.
+void colorWipe(uint32_t color, int wait) {
+  for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
+    strip.setPixelColor(i, color);         //  Set pixel's color (in RAM)
+    strip.show();                          //  Update strip to match
+    delay(wait);                           //  Pause for a moment
+  }
+}
 
 // Serial1 PA_9 TX PA_10 RX
 // ########################## SETUP ##########################
@@ -93,6 +107,7 @@ void setup()
   
   strip.begin(); // INITIALIZE NeoPixel strip object
   strip.show();  // Turn OFF all pixels ASAP
+  strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255)
 
   while (!Serial)
     ;
@@ -108,6 +123,14 @@ void setup()
   display.println("Hoverboard Control");
   display.setCursor(int((display.width() - (strlen("v STM32 0.1") * 6)) / 2), 8);
   display.println("v STM32 0.1");
+  
+  // Fill along the length of the strip in various colors...
+   
+  colorWipe(strip.Color(255,   0,   0)     , 20); // Red
+  colorWipe(strip.Color(  0, 255,   0)     , 20); // Green
+  colorWipe(strip.Color(  0,   0, 255)     , 20); // Blue
+  colorWipe(strip.Color(  0,   0,   0)     , 20); // Black
+  
 }
 // ########################## SEND ##########################
 void Send(int16_t uSteer, int16_t uSpeed)
@@ -257,5 +280,5 @@ void loop()
   digitalWrite(LED_BUILTIN, (timeNow % 2000) < 1000);
   Receive();
   Nunchuk_control();
-  // Serial.println(timeNow);
+  Serial.println(timeNow);
 }