diff --git a/robots/little_john/telemetry/code/monitor/version1/main.py b/robots/little_john/telemetry/code/monitor/version1/main.py
index ae527fb..4348c0e 100755
--- a/robots/little_john/telemetry/code/monitor/version1/main.py
+++ b/robots/little_john/telemetry/code/monitor/version1/main.py
@@ -40,7 +40,7 @@ else:
     os='Other'
 logging.info('OS = ' + os)
 
-testseries = Series(points=150, title="Sine wave demo", xname="Time (s)", yname="100sin(t)")
+testseries = Series(points=150, ylimits=(9, 1024), title="Sine wave demo", xname="Time (s)", yname="100sin(t)")
 plots = []
 plots.append(Plot(testseries))
 
@@ -56,7 +56,7 @@ def pollSerial(elapsed):
     for n, value in enumerate(values):
         values[n] = float(value)
     #logging.info("Recieved data: " + str(values))
-    testseries.addpoint(values)
+    testseries.addpoint([time.time()-starttime] + values)
     
 def fakePollSerial(elapsed):
     """This function immitates the behaviour of pollSerial, for testing purposes"""
@@ -66,6 +66,6 @@ def fakePollSerial(elapsed):
     testseries.addpoint(values)
 
 # Pyglet looks after the main event loop, but this ensures that data keeps being read in
-pyglet.clock.schedule_interval(fakePollSerial, 0.04)
+pyglet.clock.schedule_interval(pollSerial, 0.04)
 
 pyglet.app.run()
diff --git a/robots/little_john/telemetry/code/monitor/version1/series.py b/robots/little_john/telemetry/code/monitor/version1/series.py
index a19e990..dcbf017 100644
--- a/robots/little_john/telemetry/code/monitor/version1/series.py
+++ b/robots/little_john/telemetry/code/monitor/version1/series.py
@@ -5,7 +5,7 @@
 import logging
 
 class Series:
-    def __init__(self, points=100, title="Series title", xname="x-axis name", yname="y-axis name"):
+    def __init__(self, points=100, xlimits=(0, 100), ylimits=(0, 100), title="Series title", xname="x-axis name", yname="y-axis name"):
         """Set up an object to store a 2D data series"""
         # Proposal:
         #   In order to neatly handle multiple lines on the same graph
@@ -20,8 +20,8 @@ class Series:
         self.title = title
         self.xname = xname
         self.yname = yname
-        self.xlimits = (0, 100)
-        self.ylimits = (-100, 100)
+        self.xlimits = xlimits
+        self.ylimits = ylimits
         self.data = []
         self.points = points
         
--
libgit2 0.21.2