diff --git a/pps_ws/src/d_fall_pps/CMakeLists.txt b/pps_ws/src/d_fall_pps/CMakeLists.txt
index 58a69ae5b4a79f25e292b220b181b1a8db41a280..e57ee18314ab6ad5716826ea22469a7c0a2d5d22 100755
--- a/pps_ws/src/d_fall_pps/CMakeLists.txt
+++ b/pps_ws/src/d_fall_pps/CMakeLists.txt
@@ -260,6 +260,7 @@ set(MY_CPP_SOURCES_GUI              # compilation of sources
     ${MY_GUI_LIB_PATH_SRC}/crazyFly.cpp
     ${MY_GUI_LIB_PATH_SRC}/CFLinker.cpp
     ${MY_GUI_LIB_PATH_SRC}/channelLUT.cpp
+    ${MY_GUI_LIB_PATH_SRC}/centerMarker.cpp
     )
 
 # StudentGUI -- Add sources here
diff --git a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/CrazyFlyGUI.qrc b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/CrazyFlyGUI.qrc
index ff5d1cbb34addf9d8b8a6ca7b182c75f2c83c8f5..55f60357b429ec3b90fa147d791f7d1c4b507372 100644
--- a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/CrazyFlyGUI.qrc
+++ b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/CrazyFlyGUI.qrc
@@ -12,5 +12,6 @@
   <file>images/drone_fixed_07.svg</file>
   <file>images/drone_fixed_08.svg</file>
   <file>images/drone_fixed_09.svg</file>
+  <file>images/center_rect.svg</file>
 </qresource>
 </RCC>
diff --git a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/images/center_rect.svg b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/images/center_rect.svg
index 53d15a1335d8953d39f1439c4354054b63de8f68..0c9eb7a8c8c0918b453f389c857913eb90c9df43 100644
--- a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/images/center_rect.svg
+++ b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/images/center_rect.svg
@@ -9,9 +9,9 @@
    xmlns="http://www.w3.org/2000/svg"
    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="210mm"
-   height="297mm"
-   viewBox="0 0 744.09448819 1052.3622047"
+   width="151.66655mm"
+   height="151.66655mm"
+   viewBox="0 0 537.40116 537.40116"
    id="svg2"
    version="1.1"
    inkscape:version="0.91 r13725"
@@ -26,8 +26,8 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="0.98994949"
-     inkscape:cx="299.90787"
-     inkscape:cy="691.68435"
+     inkscape:cx="149.39514"
+     inkscape:cy="309.84671"
      inkscape:document-units="px"
      inkscape:current-layer="layer1"
      showgrid="false"
@@ -35,7 +35,11 @@
      inkscape:window-height="1056"
      inkscape:window-x="65"
      inkscape:window-y="24"
-     inkscape:window-maximized="1" />
+     inkscape:window-maximized="1"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0" />
   <metadata
      id="metadata7">
     <rdf:RDF>
@@ -51,12 +55,13 @@
   <g
      inkscape:label="Layer 1"
      inkscape:groupmode="layer"
-     id="layer1">
+     id="layer1"
+     transform="translate(0,-133.12338)">
     <circle
        style="fill:#000000;fill-opacity:1"
        id="path4136"
-       cx="346.48233"
-       cy="324.04221"
-       r="47.477169" />
+       cx="268.70059"
+       cy="401.82397"
+       r="268.70059" />
   </g>
 </svg>
diff --git a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/centerMarker.h b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/centerMarker.h
new file mode 100644
index 0000000000000000000000000000000000000000..32f513f718b442d5c7287909aeddf17cc1004a4f
--- /dev/null
+++ b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/centerMarker.h
@@ -0,0 +1,27 @@
+#ifndef CENTER_MARKER_H
+#define CENTER_MARKER_H
+
+#include "globalDefinitions.h"
+
+#include <QGraphicsSvgItem>
+#include <QSvgRenderer>
+
+#define DIAMETER         100 * FROM_MILIMETERS_TO_UNITS
+
+class centerMarker : public QGraphicsSvgItem
+{
+public:
+    explicit centerMarker(QString filename, QGraphicsItem * parent = 0);
+    ~centerMarker();
+    QRectF boundingRect() const;
+
+    void paint(QPainter * painter,
+               const QStyleOptionGraphicsItem * option,
+               QWidget * widget);
+
+private:
+    qreal m_diameter;
+};
+
+
+#endif
diff --git a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/crazyFly.h b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/crazyFly.h
index 6671a1f390a4670e41299c8f3aa70cefe79021be..d1ac3d4f3a922e492677d9f95d668208b9f06991 100644
--- a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/crazyFly.h
+++ b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/crazyFly.h
@@ -68,5 +68,4 @@ private:
     int m_assigned_cf_zone_index;
 };
 
-
 #endif
diff --git a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/crazyFlyZone.h b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/crazyFlyZone.h
index 0d5c433f12bf429d1a371f624735e80197ff448a..0ae5dbc9d154f3f50f65eb9ff223ed4687d1b69c 100755
--- a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/crazyFlyZone.h
+++ b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/include/crazyFlyZone.h
@@ -3,8 +3,8 @@
 
 
 #include <QGraphicsSimpleTextItem>
-
 #include "myGraphicsRectItem.h"
+#include "centerMarker.h"
 
 class crazyFlyZone : public myGraphicsRectItem
 {
@@ -31,7 +31,7 @@ protected:
 private:
     int _index;
     QGraphicsSimpleTextItem* label;
-    QGraphicsEllipseItem* m_center_marker;
+    centerMarker* m_center_marker;
 
     // stuff for linking
     bool m_linked;
diff --git a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/centerMarker.cpp b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/centerMarker.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..4f412d2a0eedbe419e3cdef6f07341e05c593e03
--- /dev/null
+++ b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/centerMarker.cpp
@@ -0,0 +1,25 @@
+#include "centerMarker.h"
+
+#include <QPen>
+#include <QBrush>
+
+
+centerMarker::centerMarker(QString filename, QGraphicsItem * parent)
+    : QGraphicsSvgItem(filename, parent)
+{
+    m_diameter = DIAMETER;
+}
+
+centerMarker::~centerMarker()
+{
+}
+
+QRectF centerMarker::boundingRect() const
+{
+    return QRectF(-m_diameter/2, -m_diameter/2, m_diameter, m_diameter);
+}
+
+void centerMarker::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+    this->renderer()->render(painter,this->boundingRect());
+}
diff --git a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/crazyFlyZone.cpp b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/crazyFlyZone.cpp
index 49d0e43b26dea2c7ab8b7e7d7bc3ea91d6326395..3b68c898e0944598b198226a4a2b63c2ce805fb0 100755
--- a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/crazyFlyZone.cpp
+++ b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/crazyFlyZone.cpp
@@ -23,7 +23,8 @@ void crazyFlyZone::updateLabel(QString string)
 void crazyFlyZone::createCenterMarker()
 {
     qreal diameter = 0.1 * FROM_METERS_TO_UNITS;
-    m_center_marker = new QGraphicsEllipseItem(QRectF(-diameter/2, -diameter/2, diameter, diameter), this);
+    // m_center_marker = new QGraphicsEllipseItem(QRectF(-diameter/2, -diameter/2, diameter, diameter), this);
+    m_center_marker = new centerMarker(":/images/center_rect.svg", this);
     updateCenterMarker();
     m_center_marker->setZValue(10); //max z value, always on top of things
 }
diff --git a/pps_ws/src/d_fall_pps/param/Crazyflie.db b/pps_ws/src/d_fall_pps/param/Crazyflie.db
index 92f7e458c1817d5ad3e76e4c1c9ff79c46ce93de..5fdd872abde30c83b53e0883f970c849ae82e02e 100644
--- a/pps_ws/src/d_fall_pps/param/Crazyflie.db
+++ b/pps_ws/src/d_fall_pps/param/Crazyflie.db
@@ -1 +1 @@
-5,cfTwo,0/69/2M,0,-0.251699,-1.96387,-0.2,0.0792386,-1.54593,2
+5,PPS_CF04,0/24/2M,0,-0.885221,-0.268794,-0.2,0.379322,0.827822,2