diff --git a/src/um24clab.py b/src/um24clab.py
index 49066d6..7209f40 100644
--- a/src/um24clab.py
+++ b/src/um24clab.py
@@ -1,5 +1,8 @@
 #!/usr/bin/env python
 import sys
+from PySide2.QtCore import (
+    QDateTime, Qt
+)
 from PySide2.QtWidgets import (
     QApplication, QMainWindow
 )
@@ -23,22 +26,50 @@ class UM24Lab(QMainWindow):
         self.ui.plotCurrent = QtCharts.QChart()
         self.ui.widgetCurrent.setChart(self.ui.plotCurrent)
 
+        # --- Voltage ---
         voltage = self.ui.plotVoltage
-        series  = QtCharts.QLineSeries()
-        series.setName('Voltage')
+        series = QtCharts.QLineSeries()
+        series.setName('Voltage over time')
+        # Add random demo data
         for x in range(100):
             y = random.randint(0, 10)
             series.append(x, y)
         voltage.addSeries(series)
 
+        axis_x = QtCharts.QValueAxis()
+        axis_x.setTickCount(60)
+        axis_x.setTitleText('Seconds')
+        voltage.addAxis(axis_x, Qt.AlignBottom)
+        series.attachAxis(axis_x)
+
+        axis_y = QtCharts.QValueAxis()
+        axis_y.setTickCount(10)
+        axis_y.setTitleText('Voltage (V)')
+        voltage.addAxis(axis_y, Qt.AlignLeft)
+        series.attachAxis(axis_y)
+
+        # --- Current ---
         current = self.ui.plotCurrent
-        series  = QtCharts.QLineSeries()
-        series.setName('Current')
+        series = QtCharts.QLineSeries()
+        series.setName('Current over time')
+        # Add random demo data
         for x in range(100):
             y = random.randint(0, 10)
             series.append(x, y)
         current.addSeries(series)
 
+        axis_x = QtCharts.QValueAxis()
+        axis_x.setTickCount(60)
+        axis_x.setTitleText('Seconds')
+        current.addAxis(axis_x, Qt.AlignBottom)
+        series.attachAxis(axis_x)
+
+        axis_y = QtCharts.QValueAxis()
+        axis_y.setTickCount(10)
+        axis_y.setTitleText('Current (A)')
+        current.addAxis(axis_y, Qt.AlignLeft)
+        series.attachAxis(axis_y)
+
 
 if __name__ == '__main__':
     app = QApplication(sys.argv)