diff --git a/avr/modules/sk6812/io.asm b/avr/modules/sk6812/io.asm
index bf39ad8..3e9e4d1 100644
--- a/avr/modules/sk6812/io.asm
+++ b/avr/modules/sk6812/io.asm
@@ -11,121 +11,6 @@
 
 
 sk6812JumpTableSendByte:
-  rjmp sk6812SendByte0
-  rjmp sk6812SendByte1
-
-
-
-
-; ***************************************************************************
-; type 0
-
-
-.macro SK6812_SENDBIT0
-sk6812SendBit:                     ;  0    1
-  rol r16                          ; +1   +1
-  brcs sk6812SendBit_send1         ; +1   +2
-  ; send 0
-  nop                              ; +1
-  sbi SK6812_PORT, SK6812_PINNUM   ; +2
-  nop                              ; +1
-  nop                              ; +1
-  cbi SK6812_PORT, SK6812_PINNUM   ; +2
-;  nop                              ; +1
-  nop                              ; +1
-  rjmp sk6812SendBit_end           ; +2
-sk6812SendBit_send1:
-  ; send 1
-  sbi SK6812_PORT, SK6812_PINNUM   ;      +2
-  nop                              ;      +1
-  nop                              ;      +1
-  nop                              ;      +1
-  cbi SK6812_PORT, SK6812_PINNUM   ;      +2
-  nop                              ;      +1
-  nop                              ; +1
-  nop                              ;      +1
-sk6812SendBit_end:                 ; 13   13
-.endmacro
-
-
-
-; ---------------------------------------------------------------------------
-; @routine sk6812SendByte0
-;
-; Sends a byte to the LED strip
-; @param r16 byte
-; @clobbers r16 (r24, r25)
-
-sk6812SendByte0:
-  SK6812_SENDBIT0
-  SK6812_SENDBIT0
-  SK6812_SENDBIT0
-  SK6812_SENDBIT0
-
-  SK6812_SENDBIT0
-  SK6812_SENDBIT0
-  SK6812_SENDBIT0
-  SK6812_SENDBIT0
-  ret
-; @end
-
-
-
-
-
-; ***************************************************************************
-; type 1
-
-
-.macro SK6812_SENDBIT1
-  lsl r16                          ; +1
-  brcs l_sendOne                   ; +1 if false, +2 if branch taken
-  ; send ZERO
-  nop                              ; +1
-  out SK6812_PORT, r25             ; +1   HIGH
-  nop                              ; +1
-  nop                              ; +1
-  nop
-  out SK6812_PORT, r24             ; +1
-  nop                              ; +1
-  rjmp l_end                       ; +2
-l_sendOne:
-  out SK6812_PORT, r25             ; +1   HIGH
-  nop                              ; +1
-  nop                              ; +1
-  nop                              ; +1
-  nop                              ; +1
-  nop                              ; +1
-  out SK6812_PORT, r24             ; +1
-  nop                              ; +1
-l_end:
-.endmacro
-
-
-
-; ---------------------------------------------------------------------------
-; @routine sk6812SendByte1
-;
-; Sends a byte to the LED strip
-; @param r16 byte
-; @clobbers r16, r24, r25
-
-sk6812SendByte1:
-  ldi r24, 0
-  ldi r25, (1<<SK6812_PINNUM)
-  
-  SK6812_SENDBIT1
-  SK6812_SENDBIT1
-  SK6812_SENDBIT1
-  SK6812_SENDBIT1
-
-  SK6812_SENDBIT1
-  SK6812_SENDBIT1
-  SK6812_SENDBIT1
-  SK6812_SENDBIT1
-  ret
-; @end
-
-
-
+  rjmp sk6812SetAllColor0  ; new BTF 1m and 5m stripes
+;  rjmp sk6812SetAllColor1  ; old BTF 1m and 5m stripes
 
diff --git a/avr/modules/sk6812/io0.asm b/avr/modules/sk6812/io0.asm
new file mode 100644
index 0000000..bb8f237
--- /dev/null
+++ b/avr/modules/sk6812/io0.asm
@@ -0,0 +1,118 @@
+; ***************************************************************************
+; copyright   : (C) 2026 by Martin Preuss
+; email       : martin@libchipcard.de
+;
+; ***************************************************************************
+; * This file is part of the project "AqHome".                              *
+; * Please see toplevel file COPYING of that project for license details.   *
+; ***************************************************************************
+
+
+
+
+
+; ***************************************************************************
+; type 0
+
+
+.macro SK6812_SENDBIT0             ;  0    1
+  rol r16                          ; +1   +1
+  brcs l_send1                     ; +1   +2
+  ; send 0
+  nop                              ; +1
+  sbi SK6812_PORT, SK6812_PINNUM   ; +2
+;  nop                              ; +1
+  nop                              ; +1
+  cbi SK6812_PORT, SK6812_PINNUM   ; +2
+  rjmp l_end                       ; +2
+l_send1:
+  ; send 1
+  sbi SK6812_PORT, SK6812_PINNUM   ;      +2
+  nop                              ;      +1
+  nop                              ;      +1
+  nop                              ;      +1
+  cbi SK6812_PORT, SK6812_PINNUM   ;      +2
+  nop                              ;      +1
+l_end:
+;  nop                              ; +1   +1
+.endmacro                          ; 12   12
+
+
+
+.macro SK6812_SENDBYTE0
+  SK6812_SENDBIT0
+  SK6812_SENDBIT0
+  SK6812_SENDBIT0
+  SK6812_SENDBIT0
+
+  SK6812_SENDBIT0
+  SK6812_SENDBIT0
+  SK6812_SENDBIT0
+  SK6812_SENDBIT0
+.endmacro
+
+
+
+; @param r18 red value
+; @param r19 green value
+; @param r20 blue value
+; @param r21 white value
+
+.macro SK6812_SENDQUADRUPEL0
+  mov r16, r19                ; G  + 1
+  SK6812_SENDBYTE0            ;    +12
+  mov r16, r18                ; R  + 1
+  SK6812_SENDBYTE0            ;    +12
+  mov r16, r20                ; B  + 1
+  SK6812_SENDBYTE0            ;    +12
+  mov r16, r21                ; W  + 1
+  SK6812_SENDBYTE0
+.endmacro
+
+
+
+; ---------------------------------------------------------------------------
+; @routine sk6812SetAllColor0
+;
+; Set all LEDs to same colour.
+;
+; @param r18 red value
+; @param r19 green value
+; @param r20 blue value
+; @param r21 white value
+; @clobbers r16, r23
+
+sk6812SetAllColor0:
+  sbi SK6812_DDR, SK6812_PINNUM                 ; set to output
+  cbi SK6812_PORT, SK6812_PINNUM
+
+  push r15
+    in r15, SREG
+    cli
+
+    lds r23, sk6812NumLeds
+sk6812SetAllColor0_loop:
+      SK6812_SENDQUADRUPEL0
+      dec r23                                   ; +1
+      breq sk6812SetAllColor0_loopEnd           ; +1
+    rjmp sk6812SetAllColor0_loop                ; +2
+sk6812SetAllColor0_loopEnd:
+    ; reset
+    cbi SK6812_PORT, SK6812_PINNUM
+    Utils_WaitNanoSecs 80000, 0, r23            ; wait for 80us
+
+;    sbi SK6812_PORT, SK6812_PINNUM
+
+    out SREG, r15
+  pop r15
+  ret
+; @end
+
+
+
+
+
+
+
+
+
diff --git a/avr/modules/sk6812/io1.asm b/avr/modules/sk6812/io1.asm
new file mode 100644
index 0000000..63dce77
--- /dev/null
+++ b/avr/modules/sk6812/io1.asm
@@ -0,0 +1,135 @@
+; ***************************************************************************
+; copyright   : (C) 2026 by Martin Preuss
+; email       : martin@libchipcard.de
+;
+; ***************************************************************************
+; * This file is part of the project "AqHome".                              *
+; * Please see toplevel file COPYING of that project for license details.   *
+; ***************************************************************************
+
+#if 0  ; disabled for now
+
+
+; ***************************************************************************
+; type 1
+
+
+.macro SK6812_SENDBIT1
+  lsl r16                          ; +1
+  brcs l_sendOne                   ; +1 if false, +2 if branch taken
+  ; send ZERO
+  nop                              ; +1
+  out SK6812_PORT, r25             ; +1   HIGH
+  nop                              ; +1
+  nop                              ; +1
+  nop
+  out SK6812_PORT, r24             ; +1
+  nop                              ; +1
+  rjmp l_end                       ; +2
+l_sendOne:
+  out SK6812_PORT, r25             ; +1   HIGH
+  nop                              ; +1
+  nop                              ; +1
+  nop                              ; +1
+  nop                              ; +1
+  nop                              ; +1
+  out SK6812_PORT, r24             ; +1
+  nop                              ; +1
+l_end:
+.endmacro
+
+
+
+; ---------------------------------------------------------------------------
+; @routine sk6812SendByte1
+;
+; Sends a byte to the LED strip
+; @param r16 byte
+; @clobbers r16, r24, r25
+
+sk6812SendByte1:
+  ldi r24, 0
+  ldi r25, (1<<SK6812_PINNUM)
+  
+  SK6812_SENDBIT1
+  SK6812_SENDBIT1
+  SK6812_SENDBIT1
+  SK6812_SENDBIT1
+
+  SK6812_SENDBIT1
+  SK6812_SENDBIT1
+  SK6812_SENDBIT1
+  SK6812_SENDBIT1
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine sk6812SendQuadruple1
+;
+; Sends GRBW
+; @param r18 red value
+; @param r19 green value
+; @param r20 blue value
+; @param r21 white value
+; @param Z   pointer to jumptable entry for SendByte function (called by ijmp)
+; @clobbers r16 (r17, r24, r25)
+
+sk6812SendQuadruple1:
+  mov r16, r19     ; G
+  rcall sk6812SendByte1  ; (r16, r17, r24, r25)
+  mov r16, r18     ; R
+  rcall sk6812SendByte1  ; (r16, r17, r24, r25)
+  mov r16, r20     ; B
+  rcall sk6812SendByte1  ; (r16, r17, r24, r25)
+  mov r16, r21     ; W
+  rcall sk6812SendByte1  ; (r16, r17, r24, r25)
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine sk6812SetAllColor1
+;
+; Set all LEDs to same colour.
+;
+; @param r18 red value
+; @param r19 green value
+; @param r20 blue value
+; @param r21 white value
+; @clobbers r23 (r16, r17, r24, r25)
+
+sk6812SetAllColor1:
+  sbi SK6812_DDR, SK6812_PINNUM                 ; set to output
+  cbi SK6812_PORT, SK6812_PINNUM
+  push r15
+    in r15, SREG
+    cli
+;    Utils_WaitNanoSecs 80000, 0, r22            ; wait for 80us
+    nop
+    nop
+    lds r23, sk6812NumLeds
+sk6812SetAllColor1_loop:
+      rcall sk6812SendQuadruple1                ; (r16, r17, r24, r25, Z)
+      dec r23
+    brne sk6812SetAllColor1_loop
+
+    ; reset
+    cbi SK6812_PORT, SK6812_PINNUM
+    Utils_WaitNanoSecs 80000, 0, r22            ; wait for 80us
+
+;    sbi SK6812_PORT, SK6812_PINNUM
+
+    out SREG, r15
+  pop r15
+sk6812SetAllColor1_done:
+  ret
+; @end
+
+
+
+#endif
+
+
diff --git a/avr/modules/sk6812/main.asm b/avr/modules/sk6812/main.asm
index 4577516..6797649 100644
--- a/avr/modules/sk6812/main.asm
+++ b/avr/modules/sk6812/main.asm
@@ -19,8 +19,8 @@
 .equ SK6812_MODE_AUTO = 2
 
 
-.equ SK6812_TYPE_BTF_NEW = 0
-.equ SK6812_TYPE_NUM     = 1
+.equ SK6812_TYPE_BTF_TYPE1 = 0  ; new BTF stripes
+.equ SK6812_TYPE_NUM       = 1
 
 .equ SK6812_DEFAULT_ONTIME = 300   ; 30secs
 
@@ -295,6 +295,7 @@ sk6812SetState_off:
 
 
 
+#if 0
 ; ---------------------------------------------------------------------------
 ; @routine sk6812SendPattern
 ;
@@ -323,6 +324,7 @@ sk6812SendPattern_loop2:
   brne sk6812SendPattern_loop1
   ret
 ; @end
+#endif
 
 
 
@@ -335,35 +337,14 @@ sk6812SendPattern_loop2:
 ; @param r19 green value
 ; @param r20 blue value
 ; @param r21 white value
-; @clobbers r23 (r16, r17, r24, r25)
+; @clobbers r23 (r16)
 
 sk6812SetAllColor:
   push zl
     push zh
       rcall sk6812GetJumpTableEntryForCurrentType
       brcc sk6812SetAllColor_done
-      sbi SK6812_DDR, SK6812_PINNUM                 ; set to output
-      cbi SK6812_PORT, SK6812_PINNUM
-      push r15
-        in r15, SREG
-        cli
-    ;    Utils_WaitNanoSecs 80000, 0, r22            ; wait for 80us
-        nop
-        nop
-        lds r23, sk6812NumLeds
-sk6812SetAllColor_loop:
-          rcall sk6812SendQuadruple ; (r16, r17, r24, r25, Z)
-          dec r23
-        brne sk6812SetAllColor_loop
-    
-        ; reset
-        cbi SK6812_PORT, SK6812_PINNUM
-        Utils_WaitNanoSecs 80000, 0, r22            ; wait for 80us
-    
-    ;    sbi SK6812_PORT, SK6812_PINNUM
-    
-        out SREG, r15
-      pop r15
+      icall
 sk6812SetAllColor_done:
     pop zh
   pop zl
@@ -390,39 +371,6 @@ sk6812GetJumpTableEntryForCurrentType_ret:
 
 
 
-; ---------------------------------------------------------------------------
-; @routine sk6812SendQuadruple
-;
-; Sends GRBW
-; @param r18 red value
-; @param r19 green value
-; @param r20 blue value
-; @param r21 white value
-; @param Z   pointer to jumptable entry for SendByte function (called by ijmp)
-; @clobbers r16 (r17, r24, r25)
-
-sk6812SendQuadruple:
-  mov r16, r19     ; G
-  rcall sk6812SendByte  ; (r16, r17, r24, r25)
-  mov r16, r18     ; R
-  rcall sk6812SendByte  ; (r16, r17, r24, r25)
-  mov r16, r20     ; B
-  rcall sk6812SendByte  ; (r16, r17, r24, r25)
-  mov r16, r21     ; W
-  rcall sk6812SendByte  ; (r16, r17, r24, r25)
-  ret
-; @end
-
-
-
-sk6812SendByte:
-  ijmp
-
-  ret
-; @end
-
-
-
 ; ---------------------------------------------------------------------------
 ; @routine sk6812WriteConfToEeprom
 ;