diff --git a/avr/devices/c03/main/main.asm b/avr/devices/c03/main/main.asm
index aef583e..3c497b4 100644
--- a/avr/devices/c03/main/main.asm
+++ b/avr/devices/c03/main/main.asm
@@ -34,7 +34,7 @@
 
 .equ STACK_SIZE                   = 256
 
-.equ NET_BUFFERS_NUM              =  8
+.equ NET_BUFFERS_NUM              =  5
 .equ NET_MSGNUMINBUF_SIZE         =  8 ; max buffer nums in ringbuffer (global incoming)
 .equ NET_IFACE_OUTMSGBUF_SIZE     =  8 ; max buffer nums in ringbuffer (per interface outbound)
 
@@ -540,6 +540,7 @@ GUI_MODULE_BEGIN:
 .include "modules/lcd2/gui/base/cdialog.asm"
 .include "modules/lcd2/gui/aqhome/sensorwatch.asm"
 .include "modules/lcd2/gui/aqhome/lightsettings.asm"
+.include "modules/lcd2/gui/aqhome/d_light_conns.asm"
 .include "modules/lcd2/gui/aqhome/d_nodevalueid.asm"
 .include "modules/lcd2/gui/screensavers/simple.asm"
 GUI_MODULE_END:
@@ -580,6 +581,8 @@ guiApp:     .byte 2
 heapStart:
 
 .equ HEAP_START = heapStart
-.equ HEAP_SIZE  = (SRAM_SIZE-STACK_SIZE)-HEAP_START
+;.equ HEAP_SIZE  = (SRAM_SIZE-STACK_SIZE)-HEAP_START
+.equ HEAP_END   = (RAMEND-STACK_SIZE)
+.equ HEAP_SIZE  = (HEAP_END-HEAP_START)