diff --git a/avr/modules/sk6812/main.asm b/avr/modules/sk6812/main.asm
index 53953f8..b2b44c0 100644
--- a/avr/modules/sk6812/main.asm
+++ b/avr/modules/sk6812/main.asm
@@ -95,11 +95,15 @@ SK6812_SetAllColor:
   push r15
     in r15, SREG
     cli
+    ; reset
+    cbi SK6812_PORT, SK6812_PINNUM
+    Utils_WaitNanoSecs 80000, 0, r22            ; wait for 80us
     lds r23, sk6812NumLeds
 SK6812_SetAllColor_loop:
       rcall sk6812SendQuadruple ; (r16, r17, r24, r25)
       dec r23
     brne SK6812_SetAllColor_loop
+    sbi SK6812_PORT, SK6812_PINNUM
     out SREG, r15
   pop r15
   ret
@@ -150,13 +154,13 @@ sk6812SendPattern_loop2:
 
 sk6812SendQuadruple:
   mov r16, r19     ; G
-  rcall sk6812SendByte  ; (r16, r17, r24, r25)
+  rcall sk6812SendByte2  ; (r16, r17, r24, r25)
   mov r16, r18     ; R
-  rcall sk6812SendByte  ; (r16, r17, r24, r25)
+  rcall sk6812SendByte2  ; (r16, r17, r24, r25)
   mov r16, r20     ; B
-  rcall sk6812SendByte  ; (r16, r17, r24, r25)
+  rcall sk6812SendByte2  ; (r16, r17, r24, r25)
   mov r16, r21     ; W
-  rcall sk6812SendByte  ; (r16, r17, r24, r25)
+  rcall sk6812SendByte2  ; (r16, r17, r24, r25)
   ret
 ; @end
 
@@ -165,6 +169,10 @@ sk6812SendQuadruple:
 ; ---------------------------------------------------------------------------
 ; @routine sk6812SendByte
 ;
+; reset: 80microsecs
+; 0: 300ns high, 900ns low  (+/- 150ns)
+; 1: 600ns high, 600ns low  (+/- 150ns)
+;
 ; @param r16 value
 ; @clobbers r16, r17, r24, r25
 
@@ -198,3 +206,40 @@ sk6812SendByte_sendOne:
 
 
 
+; ---------------------------------------------------------------------------
+; @routine sk6812SendByte2
+;
+; reset: 80microsecs
+; 0: 300ns high, 900ns low  (+/- 150ns)
+; 1: 600ns high, 600ns low  (+/- 150ns)
+;
+; @param r16 value
+; @clobbers r16, r17, r24, r25
+
+sk6812SendByte2:
+  ldi r17, 8                         ; +1
+sk6812SendByte2_loop:
+    lsl r16                          ; +1
+    brcs sk6812SendByte2_sendOne     ; +1 if false, +2 if branch taken
+    nop                              ; +1
+    ; send ZERO
+    sbi SK6812_PORT, SK6812_PINNUM   ; +2 set HIGH
+    nop                              ; +1  (125ns)
+    cbi SK6812_PORT, SK6812_PINNUM   ; +2 set LOW    (250ns)
+    dec r17                          ; +1  (125ns)
+  brne sk6812SendByte2_loop          ; +1 if false, +2 if branch taken
+  ret                                ; +4
+  
+sk6812SendByte2_sendOne:
+    sbi SK6812_PORT, SK6812_PINNUM   ; +2 set HIGH
+    nop                              ; +1 (125ns)
+    nop                              ; +1 (125ns)
+    nop                              ; +1 (125ns)
+    cbi SK6812_PORT, SK6812_PINNUM   ; +2 set LOW
+    dec r17                          ; +1
+  brne sk6812SendByte2_loop          ; +1 if false, +2 if branch taken
+  ret                                ; +4
+; @end
+
+
+