Make distance measuring more accurate

code/table.py

@@ -26,7 +26,15 @@ class Table:
 
         Might return False if measuring error.
         """
-        distance = self.hcsr04.distance_cm()
+
+        distances = []
+
+        # Measure a bunch of times...
+        for x in range(0, 20):
+            distances.append(self.hcsr04.distance_cm())
+
+        # Take the longest distance, I've not seen any that is too far
+        distance = max(distances)
 
         if distance > 0:
             return distance