diff --git a/avr/devices/c03/test/w_mainmenu.asm b/avr/devices/c03/test/w_mainmenu.asm
new file mode 100644
index 0000000..b5cc8ec
--- /dev/null
+++ b/avr/devices/c03/test/w_mainmenu.asm
@@ -0,0 +1,133 @@
+; ***************************************************************************
+; 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.   *
+; ***************************************************************************
+
+#ifndef AQH_AVR_W_MAINMENU_ASM
+#define AQH_AVR_W_MAINMENU_ASM
+
+
+; ***************************************************************************
+; defines
+
+.equ MAINMENU_OFFS_BEGIN   = WIDGET_SIZE
+.equ MAINMENU_SIZE         = MAINMENU_OFFS_BEGIN+0
+
+.equ MAINMENU_SIGNAL_CLIMATE  =  WIDGET_SIGNAL_NEXTFREE+0
+.equ MAINMENU_SIGNAL_LIGHT    =  WIDGET_SIGNAL_NEXTFREE+1
+.equ MAINMENU_SIGNAL_WINDOWS  =  WIDGET_SIGNAL_NEXTFREE+2
+.equ MAINMENU_SIGNAL_DEBUG    =  WIDGET_SIGNAL_NEXTFREE+3
+.equ MAINMENU_SIGNAL_NEXTFREE =  WIDGET_SIGNAL_NEXTFREE+4
+
+
+.equ MAINMENU_SEL_CLIMATE     = 1
+.equ MAINMENU_SEL_LIGHT       = 2
+.equ MAINMENU_SEL_WINDOWS     = 3
+.equ MAINMENU_SEL_DEBUG       = 4
+
+
+; ***************************************************************************
+; code
+
+.cseg
+
+
+
+; ---------------------------------------------------------------------------
+; @routine MainMenu_new
+;
+; @param X pointer to parent window
+; @return CFLAG set of okay, cleared otherwise
+; @return Y address of newly created object
+
+
+MainMenu_new:
+  ; create HLayout
+  ldi r16, 0                                                                                           ; OPTS
+  ldi r17, (WIDGET_PACK_FILLED<<WIDGET_PACK_HSELF0_BIT) | (WIDGET_PACK_FILLED<<WIDGET_PACK_VSELF0_BIT) ; PACK
+  ldi r20, HLAYOUT_MODE_EXPAND
+  bigcall HLayout_new
+  brcc MainMenu_new_ret
+
+  ldi r20, LOW(RESSSOURCE_IMG_TEMP)
+  ldi r21, HIGH(RESSSOURCE_IMG_TEMP)
+  ldi r22, MAINMENU_SEL_CLIMATE
+  rcall mainMenuCreateButton
+  brcc MainMenu_new_ret
+
+  ldi r20, LOW(RESSSOURCE_IMG_LIGHT)
+  ldi r21, HIGH(RESSSOURCE_IMG_LIGHT)
+  ldi r22, MAINMENU_SEL_LIGHT
+  rcall mainMenuCreateButton
+  brcc MainMenu_new_ret
+
+  ldi r20, LOW(RESSSOURCE_IMG_DEBUGEEPROM)
+  ldi r21, HIGH(RESSSOURCE_IMG_DEBUGEEPROM)
+  ldi r22, MAINMENU_SEL_DEUG
+  rcall mainMenuCreateButton
+  brcc MainMenu_new_ret
+
+  mov yl, xl
+  mov yh, xh
+  sec
+MainMenu_new_ret:
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @param X       parent
+; @param r21:r20 img ressource
+; @param r22     selector
+; @return CFLAG  set if new object created, cleared on error
+; @return Y      button created
+; @clobbers any, !X
+
+mainMenuCreateButton:
+  push xl
+    push xh
+      push r20
+        push r21
+          push r22
+            ldi r16, 0
+            ldi r17, (WIDGET_PACK_BEGIN<<WIDGET_PACK_HSELF0_BIT) | (WIDGET_PACK_BEGIN<<WIDGET_PACK_VSELF0_BIT) ; PACK
+            ldi r20, BUTTON_MODE_NORMAL
+            rcall Button_new
+          pop r22
+        pop r21
+      pop r20
+      brcc mainMenuCreateButton_done
+      mov xl, yl
+      mov xh, yh
+      push xl    ; Button
+        push xh
+          ldi r16, 0
+          ldi r17, (WIDGET_PACK_BEGIN<<WIDGET_PACK_HSELF0_BIT) | (WIDGET_PACK_BEGIN<<WIDGET_PACK_VSELF0_BIT) ; PACK
+          bigcall ImageView_new
+        pop xh
+      pop xl
+      brcc mainMenuCreateButton_done
+    pop xh
+  pop xl  
+  std Y+OBJECT_OFFS_TARGET_LO, xl
+  std Y+OBJECT_OFFS_TARGET_HI, xh
+  std Y+OBJECT_OFFS_SELECTOR, r22
+  rjmp mainMenuCreateButton_ret
+
+mainMenuCreateButton_done:
+    pop xh
+  pop xl
+mainMenuCreateButton_ret:
+  ret
+; @end
+
+
+
+
+#endif
+