diff --git a/Software/python/hwtest.py b/Software/python/hwtest.py
index e851f36..4a3f460 100644
--- a/Software/python/hwtest.py
+++ b/Software/python/hwtest.py
@@ -42,13 +42,6 @@ servos[2].throttle = 0
 white_cal = [0]*8
 black_cal = [5]*8
 
-# Initialize Brightness
-brightness_idx = np.arange(8)
-brightness = [get_normalized_reflectivity(c) for c in range(8)]
-
-# Initialize Log
-time_data = np.empty((0, 3)) # [[t, e, c]]
-
 def get_reflectivity(chan):
     global mux_io
     global adc_mux
@@ -67,6 +60,13 @@ def get_normalized_reflectivity(chan):
     global black_cal
     return (get_reflectivity(chan) - black_cal[chan]) / (white_cal[chan] - black_cal[chan])
 
+# Initialize brightness data
+brightness_idx = np.arange(8)
+brightness = [get_normalized_reflectivity(c) for c in range(8)]
+
+# Initialize time data
+time_data = np.empty((0, 3)) # [[t, e, c]]
+
 # Create sources for plots
 brightness_plot_source = ColumnDataSource(data=dict(sensor=brightness_idx, brightness=brightness))
 time_plot_source = ColumnDataSource(data=dict(t=time_data[:,0], e=time_data[:,1], c=time_data[:,2]))