diff --git a/software/device.py b/software/device.py
index e6a84d3..8ec2859 100644
--- a/software/device.py
+++ b/software/device.py
@@ -83,7 +83,7 @@ class Device:
             return (randint(0,65535),                                       # AD0
                     randint(0,65535), randint(0,65535), randint(0,65535),   # AD1 .. AD3
                     randint(0,65535), randint(0,65535), randint(0,65535),   # AD4 .. AD6
-                    randint(0,7))                                           # IO1 .. IO3
+                    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/ModuleDebug.py b/software/modules/ModuleDebug.py
index 58bdf29..d260483 100644
--- a/software/modules/ModuleDebug.py
+++ b/software/modules/ModuleDebug.py
@@ -2,6 +2,7 @@ from PyQt4.QtGui import QWidget
 from PyQt4.QtCore import pyqtSlot
 from PyQt4.QtCore import SIGNAL
 from PyQt4.QtCore import QObject
+from PyQt4.QtCore import QTimer
 from ModuleDebugUi import Ui_ModuleDebug
 from device import Device
 
@@ -25,7 +26,13 @@ class ModuleDebugWidget(QWidget):
         QObject.connect(self.ui.pushPin2, SIGNAL("clicked(bool)"), self.on_pins_changed)
         QObject.connect(self.ui.pushPin3, SIGNAL("clicked(bool)"), self.on_pins_changed)
 
-        self.dev = Device(True)
+        # real device:
+        self.dev = Device()
+        # fake device:
+        # self.dev = Device(True)
+
+        self.timer = QTimer()
+        QObject.connect(self.timer, SIGNAL("timeout()"), self.read_inputs)
 
     @pyqtSlot(int)
     def on_dialPWM1_valueChanged(self, val):
@@ -109,7 +116,34 @@ class ModuleDebugWidget(QWidget):
 
     @pyqtSlot(int)
     def on_dialInputFreq_valueChanged(self, val):
-        print self.dev.read()
+        self.timer.stop()
+        if val > 0:
+            self.timer.start(1000.0/val)
+        else:
+            self.ui.labelAD0.setText('AD0: -')
+            self.ui.labelAD1.setText('AD1: -')
+            self.ui.labelAD2.setText('AD2: -')
+            self.ui.labelAD3.setText('AD3: -')
+            self.ui.labelAD4.setText('AD4: -')
+            self.ui.labelAD5.setText('AD5: -')
+            self.ui.labelAD6.setText('AD6: -')
+            self.ui.labelIO1.setText('IO1: -')
+            self.ui.labelIO2.setText('IO2: -')
+            self.ui.labelIO3.setText('IO3: -')
+
+
+    def read_inputs(self):
+        r = self.dev.read()
+        self.ui.labelAD0.setText('AD0: ' + str(r[0]))
+        self.ui.labelAD1.setText('AD1: ' + str(r[1]))
+        self.ui.labelAD2.setText('AD2: ' + str(r[2]))
+        self.ui.labelAD3.setText('AD3: ' + str(r[3]))
+        self.ui.labelAD4.setText('AD4: ' + str(r[4]))
+        self.ui.labelAD5.setText('AD5: ' + str(r[5]))
+        self.ui.labelAD6.setText('AD6: ' + str(r[6]))
+        self.ui.labelIO1.setText('IO1: ' + str(r[7]))
+        self.ui.labelIO2.setText('IO2: ' + str(r[8]))
+        self.ui.labelIO3.setText('IO3: ' + str(r[9]))
 
 class ModuleDebug():
 
diff --git a/software/modules/ModuleDebug.ui b/software/modules/ModuleDebug.ui
index 1da9560..f3c7dbb 100644
--- a/software/modules/ModuleDebug.ui
+++ b/software/modules/ModuleDebug.ui
@@ -662,10 +662,10 @@
      </rect>
     </property>
     <property name="minimum">
-     <number>1</number>
+     <number>0</number>
     </property>
     <property name="maximum">
-     <number>999</number>
+     <number>1000</number>
     </property>
     <property name="pageStep">
      <number>10</number>
@@ -687,13 +687,13 @@
      <string>1</string>
     </property>
     <property name="minimum">
-     <number>1</number>
+     <number>0</number>
     </property>
     <property name="maximum">
-     <number>999</number>
+     <number>1000</number>
     </property>
     <property name="value">
-     <number>1</number>
+     <number>0</number>
     </property>
     <property name="maxLength" stdset="0">
      <number>3</number>
@@ -709,7 +709,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>AD1: 0</string>
+     <string>AD1: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelAD2">
@@ -722,7 +722,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>AD2: 0</string>
+     <string>AD2: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelAD3">
@@ -735,7 +735,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>AD3: 0</string>
+     <string>AD3: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelAD4">
@@ -748,7 +748,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>AD4: 0</string>
+     <string>AD4: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelAD5">
@@ -761,7 +761,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>AD5: 0</string>
+     <string>AD5: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelAD6">
@@ -774,7 +774,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>AD6: 0</string>
+     <string>AD6: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelIO2">
@@ -787,7 +787,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>IO2: 0</string>
+     <string>IO2: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelIO3">
@@ -800,7 +800,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>IO3: 0</string>
+     <string>IO3: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelIO1">
@@ -813,7 +813,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>IO1: 0</string>
+     <string>IO1: -</string>
     </property>
    </widget>
    <widget class="QLabel" name="labelAD0">
@@ -826,7 +826,7 @@
      </rect>
     </property>
     <property name="text">
-     <string>AD0: 0</string>
+     <string>AD0: -</string>
     </property>
    </widget>
   </widget>