diff --git a/devtimer.py b/devtimer.py
index d30aeba..53fe809 100755
--- a/devtimer.py
+++ b/devtimer.py
@@ -22,13 +22,14 @@
 CLK = 21
 DIO = 20
 
-# Compensate for program execution time in master timing loop
+# General Constants
 
-CALIBRATION_OFFSET = 0.0032
+DEBUG = True                  # Debugging switch
 
-# Reference temperature in degrees F
+BEEP = 15                     # Beep interval
+CALIBRATION_OFFSET = 0.0022   # Compensate for program overhead in master loop
+NORMAL_TEMP = 68              # Reference temperature in degrees F
 
-NORMAL_TEMP = 68
 
 #####
 # Lookup Table For Compensating Factors
@@ -53,11 +54,17 @@
 
 compensate = (
                0.000,     # Normal
-               0.002,     # Small temperature dependency
-               0.004,     # Medium temperature dependency
-               0.010,     # Large temperature dependency
+               0.010,     # Small temperature dependency
+               0.040,     # Medium temperature dependency
+               0.100,     # Large temperature dependency
              )
 
+# Beep at the user at fixed intervals
+
+def beep():
+    print("Beep!")
+
+
 # Return the current temperature in degrees F
 
 def get_temp():
@@ -86,11 +93,19 @@
     elapsed_time = 0
     while True:
 
+        # Beep periodically
+
+        if elapsed_time and not elapsed_time%BEEP:
+            beep()
+
         last = time()
         update_thread = Thread(None, show_elapsed, None, (display0, elapsed_time))
-        sleep((1.000 + ((NORMAL_TEMP-get_temp()) * compensate[3])) - CALIBRATION_OFFSET)
+        sleep(1.000 + ((NORMAL_TEMP-get_temp()) * compensate[0]) - CALIBRATION_OFFSET)
         elapsed_time += 1
         elapsed_time %= 6000
         update_thread = Thread(None, show_elapsed, None, (display0, elapsed_time))
-        print(time()-last)
+
+        if DEBUG:
+            print("Inter-update Time: %s" % str(time()-last))
+
         update_thread.start()