Fix update issue

rpi/models/clock.py

@@ -43,11 +43,13 @@ class Clock:
                     break
 
                 self.millis -= 1
-                self.__notify_update()
+                if self.millis % 1000 == 0:
+                    self.__notify_update()
 
             time.sleep(0.001)
 
     def __notify_update(self):
+        print(self.clock_to_str())
         self.on_update(self.clock_to_str())
 
     def __notify_terminated(self):