diff --git a/Software/python/hwtest.py b/Software/python/hwtest.py
index ba384d5..89e279a 100644
--- a/Software/python/hwtest.py
+++ b/Software/python/hwtest.py
@@ -20,15 +20,21 @@ if __name__ == "__main__":
     mux_io[2] = digitalio.DigitalInOut(board.D22)
     mux_io[3] = digitalio.DigitalInOut(board.D23)
 
+    print("a")
+
     for ii, io in enumerate(mux_io):
         io.switch_to_output()
 
+    print("b")
+
     i2c = busio.I2C(board.SCL, board.SDA)
     adc = ADS.ADS1015(i2c)
     adc_mux = AnalogIn(adc, ADS.P0)
     white_cal = [0]*8
     black_cal = [5]*8
 
+    print("c")
+
     def get_reflectivity(chan):
         chan = int(chan)
         global mux_io
@@ -38,48 +44,82 @@ if __name__ == "__main__":
             io.value = mux[ii]
         return adc_mux.voltage
 
+    print("d")
+
     def get_normalized_reflectivity(chan):
         global white_cal
         global black_cal
         
         return (get_reflectivity(chan) - black_cal[chan]) / (white_cal[chan] - black_cal[chan])
 
+    print("e")
+
     brightness_idx = np.arange(8)
     brightness = [get_normalized_reflectivity(c) for c in range(8)]
 
+    print("f")
+
     plt_source = ColumnDataSource(data=dict(x=brightness_idx, y=brightness))
 
+    print("g")
+
     # Set up plot
     plot = figure(plot_height=400, plot_width=400, title="my sine wave",
                 tools="save",
                 x_range=[0, 7], y_range=[0, 5])
 
+    print("h")
+
     plot.line('x', 'y', source=plt_source, line_width=3, line_alpha=0.6)
 
+    print("i")
+
     def update_data(*args, **kwargs):
         brightness = [get_normalized_reflectivity(c) for c in range(8)]
         plt_source.data = dict(x=brightness_idx, y=brightness)
 
+    print("j")
+
     def cal_white(*args, **kwargs):
         global white_cal
         white_cal = [get_reflectivity(c) for c in range(8)]
         update_data()
 
+    print("k")
+
     def cal_black(*args, **kwargs):
         global black_cal
         black_cal = [get_reflectivity(c) for c in range(8)]
         update_data()
 
+    print("l")
+
     cal_white_button = Button(label="Cal White")
+    
+    print("m")
+
     cal_white_button.on_click(cal_white)
+
+    print("n")
+
     cal_black_button = Button(label="Cal Black")
     cal_black_button.on_click(cal_black)
     
+    print("o")
+
     controls = column(cal_white_button, cal_black_button)
 
+    print("p")
+
     curdoc().add_root(row(controls, plot, width=800))
+
+    print("r")
+
     curdoc().title = "test"
 
+    print("s")
+
+
     # while True:
     #     time.sleep(0.1)
     #     update_data()