diff --git a/source/samples/Utils.cpp b/source/samples/Utils.cpp
index 2a06b2a1..22bdd1b4 100644
--- a/source/samples/Utils.cpp
+++ b/source/samples/Utils.cpp
@@ -123,7 +123,7 @@ void shakeEvent(MicroBitEvent)
 }
 
 // LED functions
-int brightness = 32;
+int brightness = 20;
 const int strip_length = 3;
 uint16_t pause = 300;
 
@@ -350,80 +350,6 @@ void rainbow(void){
     uBit.display.setBrightness(100); // restore brightness
  }
 
-void rainbow2()
-{
-    // Cycle a single RGB led using the sine fade technique
-    // For common cathode led
-
-    ManagedBuffer b(strip_length * 3);
-    int delay = 1; // ms
-    int start_brightness = 0;
-    int cycle_length = 360;
-    int max_display_brightness = 100;
-    int display_brightness = 0;
-
-    const uint8_t sins[360] = {
-        0,   0,   0,   0,   0,   1,   1,   2,   2,   3,   4,   5,   6,   7,   8,   9,   11,  12,
-        13,  15,  17,  18,  20,  22,  24,  26,  28,  30,  32,  35,  37,  39,  42,  44,  47,  49,
-        52,  55,  58,  60,  63,  66,  69,  72,  75,  78,  81,  85,  88,  91,  94,  97,  101, 104,
-        107, 111, 114, 117, 121, 124, 127, 131, 134, 137, 141, 144, 147, 150, 154, 157, 160, 163,
-        167, 170, 173, 176, 179, 182, 185, 188, 191, 194, 197, 200, 202, 205, 208, 210, 213, 215,
-        217, 220, 222, 224, 226, 229, 231, 232, 234, 236, 238, 239, 241, 242, 244, 245, 246, 248,
-        249, 250, 251, 251, 252, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255, 254, 254,
-        253, 253, 252, 251, 251, 250, 249, 248, 246, 245, 244, 242, 241, 239, 238, 236, 234, 232,
-        231, 229, 226, 224, 222, 220, 217, 215, 213, 210, 208, 205, 202, 200, 197, 194, 191, 188,
-        185, 182, 179, 176, 173, 170, 167, 163, 160, 157, 154, 150, 147, 144, 141, 137, 134, 131,
-        127, 124, 121, 117, 114, 111, 107, 104, 101, 97,  94,  91,  88,  85,  81,  78,  75,  72,
-        69,  66,  63,  60,  58,  55,  52,  49,  47,  44,  42,  39,  37,  35,  32,  30,  28,  26,
-        24,  22,  20,  18,  17,  15,  13,  12,  11,  9,   8,   7,   6,   5,   4,   3,   2,   2,
-        1,   1,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-        0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-        0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-        0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-        0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-        0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-        0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0};
-
-    uBit.display.setBrightness(0);
-    uBit.display.print(smiley);
-
-    for (int k = 0; k < cycle_length ; k++)
-    {
-        if (k <= max_display_brightness)
-        {
-            display_brightness++;
-        } 
-            if (k > cycle_length - (max_display_brightness + 1))
-        {
-            display_brightness--;
-        }
-        uBit.display.setBrightness(display_brightness);
-
-        if (k <= brightness)
-        {
-            start_brightness++;
-
-        }
-        if (k > cycle_length - (brightness + 1))
-        {
-            start_brightness--;
-        }
-
-        for (int i = 0; i < strip_length; i++)
-        {
-            b[0 + i * 3] = map(sins[(k + i * 120) % 360], 0, 255, 0, start_brightness);
-            b[1 + i * 3] = map(sins[(k + 120 + i * 120) % 360], 0, 255, 0, start_brightness);
-            b[2 + i * 3] = map(sins[(k + 240 + i * 120) % 360], 0, 255, 0, start_brightness);
-        }
-        uBit.serial.send(start_brightness + "\r\n");
-        neopixel_send_buffer(uBit.io.RGB, b);
-        uBit.sleep(delay);
-    }
-    disableLEDs();
-    uBit.display.clear();
-    uBit.display.setBrightness(max_display_brightness);
-}
-
 bool mute_mic = false;
 
 void playsound(int freq)