diff --git a/controls/device.py b/controls/device.py
index c47e9ef..76ddd65 100644
--- a/controls/device.py
+++ b/controls/device.py
@@ -1,7 +1,7 @@
 from dataclasses import dataclass
 from typing import Optional, Collection, Any
 from abc import ABC, abstractmethod
-from enum import Enum, auto
+from enum import Enum
 
 class DeviceLifecycleState(Enum):
     INIT = "init"
@@ -85,7 +85,4 @@ class SynchronyDevice(Device):
     @abstractmethod
     def invalidate(self, trait_name: str):
         """Invalidate logical state of trait `trait_name`"""
-        pass
-    
-    def close(self):
-        return super().close()
\ No newline at end of file
+        pass
\ No newline at end of file
diff --git a/equipment/turtle_device.py b/equipment/turtle_device.py
index 4b6cec9..32d973f 100644
--- a/equipment/turtle_device.py
+++ b/equipment/turtle_device.py
@@ -1,22 +1,16 @@
 from turtle import Turtle
 from typing import Any, Collection, Optional
-from controls.device import ActionDescriptor, SynchronyDevice, TraitDescriptor
+from controls.device import SynchronyDevice, TraitDescriptor, DeviceLifecycleState
 
 class TurtleDevice(SynchronyDevice):
-    def open(self, name, **kwargs):
-        self.turtle = Turtle(kwargs)
+    def open(self):
+        self.state == DeviceLifecycleState.OPEN
+        self.turtle = Turtle()
         super().open()
     
     def close(self):
-        del self.turtle 
-        super().close()
-    
-    # @property
-    # def trait_descriptors(self):
-    #     traits = [attribute for attribute in vars(self.turtle).items() 
-    #                   if (attribute[0].startswith('_') == False)]
-        
-    #     return Collection[[TraitDescriptor(*tr) for tr in traits]]
+        del self.turtle
+        super().close() 
     
     @property
     def trait_descriptors(self):
@@ -26,13 +20,6 @@ class TurtleDevice(SynchronyDevice):
         self.traits = [TraitDescriptor(*tr) for tr in traits]
         return self.traits
     
-    # @property
-    # def action_descriptors(self):
-    #     actions = [(attribute, getattr(t, attribute)) for attribute in dir(t)
-    #        if (attribute.startswith('_') == False)]
-        
-    #     return Collection[[TraitDescriptor(*ac) for ac in actions]]
-    
     @property
     def action_descriptors(self):
         actions = [(attribute, getattr(self.turtle, attribute)) for attribute in dir(self.turtle)
@@ -53,7 +40,11 @@ class TurtleDevice(SynchronyDevice):
                 collection[i].info=value
     
     def execute(self, action_name: str, *args, **kwargs):
-        self.turtle.action_name(args, *kwargs)
+        if self.state == DeviceLifecycleState.INIT:
+            self.open()
+        execution = getattr(self.turtle, action_name)
+        execution(int(*args), **kwargs)
+
     
     def invalidate(self, trait_name: str):
         return super().invalidate(trait_name)
diff --git a/noblocking_turtle_shell.py b/noblocking_turtle_shell.py
index 7d71211..011050a 100644
--- a/noblocking_turtle_shell.py
+++ b/noblocking_turtle_shell.py
@@ -1,13 +1,12 @@
 import cmd
-import threading
-from threading import Thread
-
-from queue import Empty, Queue
+from threading import Thread, Event
+from turtle import bye
+from queue import Queue, Empty
 
 from equipment.turtle_device import TurtleDevice
 
 
-class TurtleDeviceThread(threading.Thread):
+class TurtleDeviceThread(Thread):
     def __init__(self):
         super().__init__()
         self.device = TurtleDevice()
@@ -24,7 +23,7 @@ class TurtleDeviceThread(threading.Thread):
                     break
                 self.device.execute(*item)
                 self.queue.task_done()
-    
+        
 
 class NoBlockingTurtleShell(cmd.Cmd):
     intro = 'Welcome to the turtle shell.   Type help or ? to list commands.\n'
@@ -33,15 +32,27 @@ class NoBlockingTurtleShell(cmd.Cmd):
 
     def __init__(self, turtle_thread: TurtleDeviceThread):
         super(NoBlockingTurtleShell, self).__init__()
-        self.turtle_thread = TurtleDeviceThread()
+        self.turtle_thread = turtle_thread
         
 
     def do_execute(self, arg):
-        self.turtle_thread.queue.put(arg)
+        self.turtle_thread.queue.put(parse(arg))
 
     def do_exit(self, arg):
-        self.turtle_thread.queue.put('exit')
+        self.close()
+        self.turtle_thread.queue.put("exit")
+        print('Thank you for using Turtle')
+        return True
+        
+        
+    def close(self):
+        if self.file:
+            self.file.close()
+            self.file = None
 
+def parse(arg):
+    'Convert a series of zero or more numbers to an argument tuple'
+    return tuple(arg.split())
 
 if __name__ == '__main__':
     turtle_thread = TurtleDeviceThread()