diff --git a/software/device.py b/software/device.py
index 0642917..3544fca 100644
--- a/software/device.py
+++ b/software/device.py
@@ -87,10 +87,12 @@ class Device:
     def read(self):
         if self.fake:
             from random import randint
-            return (randint(0,1023),                                        # AD0
-                    randint(0,1023), randint(0,1023), randint(0,1023),      # AD1 .. AD3
-                    randint(0,1023), randint(0,1023), randint(0,1023),      # AD4 .. AD6
-                    randint(0,1), randint(0,1), randint(0,1))               # IO1 .. IO3
+            from time import time
+            from math import sin
+            return (randint(0,1023),                                             # AD0
+                    int(sin(time())*511+512), randint(0,1023), randint(0,1023),  # AD1 .. AD3
+                    randint(0,1023), randint(0,1023), randint(0,1023),           # AD4 .. AD6
+                    randint(0,1), randint(0,1), randint(0,1))                    # IO1 .. IO3
         else:
             i = self.epi.read(self.INSIZE)
             return (i[0] + (i[1]<<8),                                          # AD0
diff --git a/software/modules/ModuleA.py b/software/modules/ModuleA.py
index 8c6c599..acb7094 100644
--- a/software/modules/ModuleA.py
+++ b/software/modules/ModuleA.py
@@ -1,4 +1,8 @@
 from PyQt4.QtGui import QWidget
+from PyQt4.QtGui import QGraphicsScene
+from PyQt4.QtGui import QPainterPath
+from PyQt4.QtGui import QPen
+from PyQt4.QtGui import QColor
 from PyQt4.QtCore import pyqtSlot
 from PyQt4.QtCore import SIGNAL
 from PyQt4.QtCore import QObject
@@ -16,11 +20,46 @@ class ModuleAWidget(QWidget):
         self.timer = QTimer()
         QObject.connect(self.timer, SIGNAL("timeout()"), self.read_inputs)
 
+        self.scene = QGraphicsScene()
+        self.ui.graphU.setScene(self.scene)
+
+        self.data = 100*[0.0]
+
     def read_inputs(self):
         r = self.dev.read()
-        v = r[1]/1023.0 * 3.3
-        self.ui.labelV.setText('%0.3f V' % v)
-        self.ui.progressV.setValue(1000*v)
+        u = r[1]/1023.0 * 3.3
+        self.ui.labelU.setText('%0.3f V' % u)
+        self.ui.progressU.setValue(1000*u)
+        self.data.pop(0)
+        self.data.append(u)
+
+        self.scene = QGraphicsScene()
+        self.scene.addLine(-10, 400-0, 610, 400-0)
+        self.scene.addLine(0, 400+10, 0, 400-410)
+        self.scene.addLine(-10, 400- 50, 10, 400- 50)
+        self.scene.addLine(-10, 400-100, 10, 400-100)
+        self.scene.addLine(-10, 400-150, 10, 400-150)
+        self.scene.addLine(-10, 400-200, 10, 400-200)
+        self.scene.addLine(-10, 400-250, 10, 400-250)
+        self.scene.addLine(-10, 400-300, 10, 400-300)
+        self.scene.addLine(-10, 400-350, 10, 400-350)
+        self.scene.addLine(-10, 400-400, 10, 400-400)
+        self.scene.addSimpleText('4.0').moveBy(-40,   0-10)
+        self.scene.addSimpleText('3.5').moveBy(-40,  50-10)
+        self.scene.addSimpleText('3.0').moveBy(-40, 100-10)
+        self.scene.addSimpleText('2.5').moveBy(-40, 150-10)
+        self.scene.addSimpleText('2.0').moveBy(-40, 200-10)
+        self.scene.addSimpleText('1.5').moveBy(-40, 250-10)
+        self.scene.addSimpleText('1.0').moveBy(-40, 300-10)
+        self.scene.addSimpleText('0.5').moveBy(-40, 350-10)
+        self.scene.addSimpleText('0.0').moveBy(-40, 400-10)
+        self.scene.addSimpleText('[U]').moveBy(-39, 430-10)
+        path = QPainterPath()
+        path.moveTo(0,400-self.data[0]*100)
+        for i in xrange(1,100):
+            path.lineTo(6*(i+1), 400-self.data[i]*100)
+        self.scene.addPath(path, QPen(QColor(0,0,255), 3))
+        self.ui.graphU.setScene(self.scene)
 
 class ModuleA():
 
diff --git a/software/modules/ModuleA.ui b/software/modules/ModuleA.ui
index c7be4f6..2995ab5 100644
--- a/software/modules/ModuleA.ui
+++ b/software/modules/ModuleA.ui
@@ -13,23 +13,23 @@
   <property name="windowTitle">
    <string>Form</string>
   </property>
-  <widget class="QGraphicsView" name="graphV">
+  <widget class="QGraphicsView" name="graphU">
    <property name="geometry">
     <rect>
      <x>80</x>
      <y>10</y>
-     <width>691</width>
-     <height>481</height>
+     <width>701</width>
+     <height>511</height>
     </rect>
    </property>
   </widget>
-  <widget class="QProgressBar" name="progressV">
+  <widget class="QProgressBar" name="progressU">
    <property name="geometry">
     <rect>
      <x>10</x>
-     <y>10</y>
+     <y>49</y>
      <width>61</width>
-     <height>481</height>
+     <height>401</height>
     </rect>
    </property>
    <property name="maximum">
@@ -45,13 +45,13 @@
     <enum>Qt::Vertical</enum>
    </property>
   </widget>
-  <widget class="QLabel" name="labelV">
+  <widget class="QLabel" name="labelU">
    <property name="geometry">
     <rect>
      <x>10</x>
-     <y>500</y>
+     <y>460</y>
      <width>61</width>
-     <height>21</height>
+     <height>61</height>
     </rect>
    </property>
    <property name="text">