diff --git a/examples/blink.py b/examples/blink.py
index 24eea2f..b93ba74 100644
--- a/examples/blink.py
+++ b/examples/blink.py
@@ -11,15 +11,40 @@
 from pymata_aio.pymata3 import PyMata3
 from pymata_aio.constants import Constants
 
+# Arduino LED is on pin 13
 BOARD_LED = 13
+
+# If you are having problems connecting, you may
+# wish to add some time the arduino_wait parameter.
+
+# replace:
+# board = PyMata3()
+# with:
+# board = PyMata3(arduino_wait=5)
+
+# adjust the arduino_wait value to meet the needs
+# of your computer
+
+# instantiate PyMata3
 board = PyMata3()
 
 
 def setup():
+    """
+    Set the Arduino BOARD_LED pin as an output
+    :return:
+    """
     board.set_pin_mode(BOARD_LED, Constants.OUTPUT)
 
 
 def loop():
+    """
+    Toggle the LED by alternating the values written
+    to the LED pin. Wait 1 second between writes.
+    Also note the use of board.sleep and not
+    time.sleep.
+    :return:
+    """
     print("LED On")
     board.digital_write(BOARD_LED, 1)
     board.sleep(1.0)