diff --git a/src/extras/Pixel.cpp b/src/extras/Pixel.cpp
index a2cca3c..1d4c634 100644
--- a/src/extras/Pixel.cpp
+++ b/src/extras/Pixel.cpp
@@ -3,31 +3,36 @@
 
 ///////////////////
 
-sk68xx::sk68xx(int pin){
-  rf=new RFControl(pin,false);
-  setRGB(0,0,0);
+Pixel::Pixel(int pin, float high0, float low0, float high1, float low1, float lowReset){
+
+  H0=high0*80;                            // high0, low0, etc. are all in microseconds and must be multiplied by 80 to match 80MHz RFControl clock
+  L0=low0*80;
+  H1=high1*80;
+  L1=low1*80;
+  LR=lowReset*80;  
+
+  rf=new RFControl(pin,false);            // set clock to 1/80 usec
+  setRGB(0,255,0);
 }
 
 ///////////////////
 
-void sk68xx::setRGB(uint8_t r, uint8_t g, uint8_t b){
+void Pixel::setRGB(uint8_t r, uint8_t g, uint8_t b){
   
   if(!*rf)
     return;
-
-  Serial.printf("%d %d %d\n",r,g,b);
     
   rf->clear();
   loadColor(g);
   loadColor(r);
   loadColor(b);
-  rf->phase(6400,0);          // add 80 usec end-marker delay
+  rf->phase(LR,0);          // end-marker delay/reset
   rf->start();
 }
 
 ///////////////////
 
-void sk68xx::setHSV(float h, float s, float v){
+void Pixel::setHSV(float h, float s, float v){
   float r,g,b;
   LedPin::HSVtoRGB(h,s,v,&r,&g,&b);
   setRGB(r*255,g*255,b*255);  
@@ -35,12 +40,12 @@ void sk68xx::setHSV(float h, float s, float v){
 
 ///////////////////
 
-void sk68xx::loadColor(uint8_t c){
+void Pixel::loadColor(uint8_t c){
     
   for(int i=7;i>=0;i--){
     if((c>>i)&1)
-      rf->add(51,45);
+      rf->add(H1,L1);        // 1-bit
     else
-      rf->add(26,70);
+      rf->add(H0,L0);        // 0-bit
   }
 }
diff --git a/src/extras/Pixel.h b/src/extras/Pixel.h
index 35002d9..d109b02 100644
--- a/src/extras/Pixel.h
+++ b/src/extras/Pixel.h
@@ -8,17 +8,22 @@
 #include "RFControl.h"
 #include "PwmPin.h"
 
-class sk68xx {
+class Pixel {
   private:
-    int pin=-1;
+    uint32_t H0, L0;      // High and Low times for a zero-pulse (in units of 1/80 microseconds)
+    uint32_t H1, L1;      // High and Low times for a one-pulse (in units of 1/80 microseconds)
+    uint32_t LR;          // Low time for a reset/end-of-data (in units of 1/80 microseconds)
+    
     RFControl *rf;
     void loadColor(uint8_t c);
   
   public:
-    sk68xx(int pin);                                  // creates addressable SK68XX RGB LED on pin
+    Pixel(int pin, float high0, float low0, float high1, float low1, float lowReset);    // creates addressable single-wire RGB LED on pin (such as the SK68 or WS28); parameters are in MICROSECONDS!
+    Pixel(int pin) :  Pixel(pin, 0.32, 0.88, 0.64, 0.56, 80.0) {};                       // default parameters for some SK68XX chips
+    
     void setRGB(uint8_t r, uint8_t g, uint8_t b);     // sets color to rgb values (0-255)
     void setHSV(float h, float s, float v);           // sets color to hsv values where h=[0,360], s=[0,1], v=[0,1]
-    int getPin(){return(rf->getPin());}               // returns pin number
+    int getPin(){return(rf->getPin());}               // returns pixel pin if valid, else returns -1
 
     operator bool(){         // override boolean operator to return true/false if creation succeeded/failed
       return(*rf);
diff --git a/src/extras/extras.ino b/src/extras/extras.ino
index d62d1b2..a7b1d1a 100644
--- a/src/extras/extras.ino
+++ b/src/extras/extras.ino
@@ -10,15 +10,15 @@ void setup() {
 
   Serial.println("\n\nHomeSpan Pixel Example\n\n");
 
-  sk68xx px(8);
-  sk68xx test7(7);
-  sk68xx test6(6);
+  Pixel px(8);
+  Pixel test7(7);
+  Pixel test6(6);
 
   Serial.printf("PX on Pin=%d check: %s\n",px.getPin(),px?"OKAY":"BAD");
   Serial.printf("Test 7 on Pin=%d check: %s\n",test7.getPin(),test7?"OKAY":"BAD");
   Serial.printf("Test 6 on Pin=%d check: %s\n",test6.getPin(),test6?"OKAY":"BAD");
 
-while(1){
+for(int i=0;i<5;i++){
   px.setHSV(60,0.9,0.5);
   delay(1000);
   px.setHSV(120,0.9,0.5);
@@ -27,18 +27,18 @@ while(1){
   delay(1000);
 }
 
-  while(1);
 
-  while(1){
-    for(int i=0;i<50;i++){
-      px.setRGB(i,0,0);
-      delay(2);
-    }
-    for(int i=50;i>=0;i--){
-      px.setRGB(i,0,0);
-      delay(2);
-    }
-  }
+
+//  while(1){
+//    for(int i=0;i<50;i++){
+//      px.setRGB(i,0,0);
+//      delay(2);
+//    }
+//    for(int i=50;i>=0;i--){
+//      px.setRGB(i,0,0);
+//      delay(2);
+//    }
+//  }
 
   Serial.println("Done!");