diff --git a/wled00/WS2812FX.cpp b/wled00/WS2812FX.cpp
index 5e688df2..6c8ce598 100644
--- a/wled00/WS2812FX.cpp
+++ b/wled00/WS2812FX.cpp
@@ -104,6 +104,11 @@ void WS2812FX::setColor(uint8_t r, uint8_t g, uint8_t b) {
   setColor(((uint32_t)r << 16) | ((uint32_t)g << 8) | b);
 }
 
+
+void WS2812FX::setColor(uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
+  setColor(((uint32_t)w << 24)|((uint32_t)r << 16) | ((uint32_t)g << 8) | b);
+}
+
 void WS2812FX::setColor(uint32_t c) {
   _color = c;
   _mode_color = _color;
@@ -1686,6 +1691,13 @@ void WS2812FX::setPixelColor(uint16_t i, uint32_t c)
   NeoPixelBrightnessBus::SetPixelColor(i, RgbColor((c>>16) & 0xFF, (c>>8) & 0xFF, (c) & 0xFF));
 }
 
+void WS2812FX::setPixelColor(uint16_t i, uint8_t r, uint8_t g, uint8_t b, uint8_t w)
+{
+  #ifdef RGBW
+  
+  NeoPixelBrightnessBus::SetPixelColor(i, RgbColor(r,g,b));
+}
+
 void WS2812FX::setPixelColor(uint16_t i, uint8_t r, uint8_t g, uint8_t b)
 {
   NeoPixelBrightnessBus::SetPixelColor(i, RgbColor(r,g,b));
diff --git a/wled00/WS2812FX.h b/wled00/WS2812FX.h
index 1e41cd73..9e7a65ca 100644
--- a/wled00/WS2812FX.h
+++ b/wled00/WS2812FX.h
@@ -103,13 +103,19 @@
 #define FX_MODE_DUAL_COLOR_WIPE_OUT_IN  51
 #define FX_MODE_CIRCUS_COMBUSTUS        52
 
+#ifdef RGBW
+class WS2812FX : public NeoPixelBrightnessBus<NeoGrbwFeature, NeoEsp8266Uart800KbpsMethod> {
+#else
 class WS2812FX : public NeoPixelBrightnessBus<NeoGrbFeature, NeoEsp8266Uart800KbpsMethod> {
-
+#endif
   typedef void (WS2812FX::*mode_ptr)(void);
 
   public:
-
+#ifdef RGBW
+    WS2812FX(uint16_t n) : NeoPixelBrightnessBus<NeoGrbwFeature, NeoEsp8266Uart800KbpsMethod>(n) {
+#else
     WS2812FX(uint16_t n) : NeoPixelBrightnessBus<NeoGrbFeature, NeoEsp8266Uart800KbpsMethod>(n) {
+#endif
       _mode[FX_MODE_STATIC]                = &WS2812FX::mode_static;
       _mode[FX_MODE_BLINK]                 = &WS2812FX::mode_blink;
       _mode[FX_MODE_BREATH]                = &WS2812FX::mode_breath;
@@ -242,6 +248,7 @@ class WS2812FX : public NeoPixelBrightnessBus<NeoGrbFeature, NeoEsp8266Uart800Kb
       increaseSpeed(uint8_t s),
       decreaseSpeed(uint8_t s),
       setColor(uint8_t r, uint8_t g, uint8_t b),
+      setColor(uint8_t r, uint8_t g, uint8_t b, uint8_t w),
       setColor(uint32_t c),
       setBrightness(uint8_t b),
       increaseBrightness(uint8_t s),
@@ -284,6 +291,7 @@ class WS2812FX : public NeoPixelBrightnessBus<NeoGrbFeature, NeoEsp8266Uart800Kb
       clear(void),
       setPixelColor(uint16_t i, uint32_t c),
       setPixelColor(uint16_t i, uint8_t r, uint8_t g, uint8_t b),
+      setPixelColor(uint16_t i, uint8_t r, uint8_t g, uint8_t b, uint8_t w),
       dofade(void),
       strip_off(void),
       strip_off_respectLock(void),
diff --git a/wled00/wled00.ino b/wled00/wled00.ino
index ae38daba..b60d44e5 100644
--- a/wled00/wled00.ino
+++ b/wled00/wled00.ino
@@ -22,6 +22,9 @@
 //version in format yymmddb (b = daily build)
 #define VERSION 1709251
 
+//uncomment if you have an RGBW strip
+#define RGBW
+
 //to toggle usb serial debug (un)comment following line
 //#define DEBUG
 
@@ -84,6 +87,7 @@ IPAddress staticsubnet(255, 255, 255, 0);
 boolean useHSB = false, useHSBDefault = false;
 boolean turnOnAtBoot = true;
 byte col_s[]{255, 159, 0};
+byte white_s = 0;
 byte bri_s = 127;
 uint8_t bri_nl = 0, bri_nls;
 boolean fadeTransition = true;
@@ -111,11 +115,14 @@ boolean alexaNotify = false;
 
 double transitionResolution = 0.011;
 
+boolean rgbwEnabled = false;
+
 //Internal vars
 byte col[]{0, 0, 0};
 byte col_old[]{0, 0, 0};
 byte col_t[]{0, 0, 0};
 byte col_it[]{0, 0, 0};
+byte whiteVal;
 unsigned long transitionStartTime;
 unsigned long nightlightStartTime;
 float tper_last = 0;
diff --git a/wled00/wled01_eeprom.ino b/wled00/wled01_eeprom.ino
index d12e91ce..e1e97e03 100644
--- a/wled00/wled01_eeprom.ino
+++ b/wled00/wled01_eeprom.ino
@@ -101,6 +101,8 @@ void saveSettingsToEEPROM()
   EEPROM.write(368, abs(arlsOffset));
   EEPROM.write(369, turnOnAtBoot);
   EEPROM.write(370, useHSBDefault);
+  EEPROM.write(371, white_s);
+  EEPROM.write(372, rgbwEnabled);
   EEPROM.commit();
 }
 
@@ -212,5 +214,7 @@ void loadSettingsFromEEPROM()
   if (!arlsSign) arlsOffset = -arlsOffset;
   turnOnAtBoot = EEPROM.read(369);
   useHSBDefault = EEPROM.read(370);
+  white_s = EEPROM.read(371);
+  rgbwEnabled = EEPROM.read(372);
   useHSB = useHSBDefault;
 }
diff --git a/wled00/wled02_xml.ino b/wled00/wled02_xml.ino
index 49a5089d..99550f38 100644
--- a/wled00/wled02_xml.ino
+++ b/wled00/wled02_xml.ino
@@ -33,8 +33,10 @@ void XML_response()
    resp = resp + effectCurrent;
    resp = resp + "</fx><sx>";
    resp = resp + effectSpeed;
-   resp = resp + "</sx>";
-   resp = resp + "<md>";
+   resp = resp + "</sx><wv>";
+   if (rgbwEnabled) {resp = resp + whiteVal;}
+   else {resp = resp + "-1";}
+   resp = resp + "</wv><md>";
    resp = resp + useHSB;
    resp = resp + "</md><desc>";
    resp = resp + serverDescription;
diff --git a/wled00/wled07_notify.ino b/wled00/wled07_notify.ino
index c4d0bd41..1894940f 100644
--- a/wled00/wled07_notify.ino
+++ b/wled00/wled07_notify.ino
@@ -25,6 +25,7 @@ void notify(uint8_t callMode)
   udpOut[7] = nightlightDelayMins;
   udpOut[8] = effectCurrent;
   udpOut[9] = effectSpeed;
+  udpOut[10] = whiteVal;
   
   IPAddress broadcastIp;
   broadcastIp = ~WiFi.subnetMask() | WiFi.gatewayIP();
@@ -46,6 +47,7 @@ void handleNotifications()
         col[0] = udpIn[3];
         col[1] = udpIn[4];
         col[2] = udpIn[5];
+        whiteVal = udpIn[10];
         if (udpIn[8] != effectCurrent)
         {
           effectCurrent = udpIn[8];