diff --git a/client/Makefile b/client/Makefile
index 24c0553..3168f4e 100644
--- a/client/Makefile
+++ b/client/Makefile
@@ -25,27 +25,31 @@ EXE_SUFFIX =
 DEMO_NAME = demo
 NAME = clcc
 
-OBJECTS = opendevice.o $(NAME).o
+OBJECTS = ledcube.o opendevice.o $(NAME).o
+OBJECTS_DEMO = ledcube.o opendevice.o $(DEMO_NAME).o
 
 CC	= gcc
-CFLAGS	= $(CPPFLAGS) $(USBFLAGS) -O -g -Wall
+CFLAGS	= $(CPPFLAGS) $(USBFLAGS) -O3 -Wall
 LIBS	= $(USBLIBS) -lm -largtable2
 
 PROGRAM = $(NAME)$(EXE_SUFFIX)
+DEMO = $(DEMO_NAME)$(EXE_SUFFIX)
 
 all: $(PROGRAM) $(DEMO)
 
 .c.o:
 	$(CC) $(CFLAGS) -c $<
 
-$(DEMO): $(OBJECTS)
-	$(CC) -o $(DEMO) $(OBJECTS) $(LIBS)
+$(DEMO): $(OBJECTS_DEMO)
+	$(CC) -o $(DEMO) $(OBJECTS_DEMO) $(LIBS)
 
 $(PROGRAM): $(OBJECTS)
 	$(CC) -o $(PROGRAM) $(OBJECTS) $(LIBS)
 
 strip: $(PROGRAM)
 	strip $(PROGRAM)
+	strip $(DEMO)
 
 clean:
-	rm -f *.o $(PROGRAM)
+	rm -f *.o $(PROGRAM) $(DEMO)
+
diff --git a/client/clcc.c b/client/clcc.c
index 245fb29..0630d5b 100644
--- a/client/clcc.c
+++ b/client/clcc.c
@@ -18,14 +18,17 @@
 
 #include "../firmware/globals.h"   /* custom request numbers */
 
-#include "ledcube.c"
+//#include "ledcube.h"
 
 int main(int argc, char **argv)
 {
+
     lc_init();
 
-    // TODO
+    // TODO parse commandline parameters
 
     lc_close();
+
+    return 0;
 }
 
diff --git a/client/demo.c b/client/demo.c
index 8433835..ce4762d 100644
--- a/client/demo.c
+++ b/client/demo.c
@@ -17,7 +17,13 @@
 
 #include "../firmware/globals.h"   /* custom request numbers */
 
-#include "ledcube.c"
+//#include "ledcube.h"
+
+extern void lc_setFrame(unsigned long);
+extern void lc_setMode(int);
+extern void lc_saveFrame(unsigned long, int);
+extern void lc_init(void);
+extern void lc_close(void);
 
 /**
  *
@@ -65,15 +71,25 @@ void sinus1(int max)
     {
 
         int i = 0;
+        int k = 0;
+        //for (i = 0; i < 360; i+=11)
         for (i = 0; i < 360; i++)
         {
+            // 2 = 27
+            // 1 = 27 / 2
+            // n = 27 * n / 2
             double d = cos((double)((6.28*i)/360)) + 1; // 6.28 = PI * 2
             unsigned long tmp = (1 << (int)((27 * d) / 2));
 
             // show frame
             lc_setFrame(tmp);
+            // or save the frame to eeprom
+            //tmp = tmp + (k << 27);
+            //if (k < 32)
+                //lc_saveFrame(tmp, k);
 
             usleep(2500);
+            k++;
         }
 
     }