diff --git a/.gitignore b/.gitignore
index 6609df1..51044e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -94,3 +94,4 @@ ENV/
 
 # VScode
 .vscode/
+*.pyc
diff --git a/User_Interface.py b/User_Interface.py
index 79426a2..d95d3f1 100644
--- a/User_Interface.py
+++ b/User_Interface.py
@@ -1,11 +1,41 @@
 from tkinter import *
 
 
-class EmptyFrame:
+class HelmholtzGUI(Tk):
 
-    def __init__(self, window):
-        frame = Frame(window, width=1000, height=600)
-        frame.pack()
+    def __init__(self):
+        Tk.__init__(self)
+
+        self.Menu = TopMenu(self)  # displays menu bar at the top
+
+        mainArea = Frame(self)
+        mainArea.pack(fill="both", expand=True)
+
+        # mainArea.grid_rowconfigure(0, weight=1)
+        # mainArea.grid_columnconfigure(0, weight=1)
+
+        self.frames = {}  # dictionary for storing all pages
+
+        frame = EmptyFrame(mainArea)
+
+        self.frames[EmptyFrame] = frame
+
+        # frame.grid(row=0, column=0, sticky="nsew")
+
+        self.show_frame(EmptyFrame)
+
+    def show_frame(self, key):
+        frame = self.frames[key]  # gets correct page from the dictionary
+        frame.tkraise()  # brings this frame to the front
+
+
+class EmptyFrame(Frame):
+
+    def __init__(self, parent):
+        Frame.__init__(self, parent)
+
+        frame = Frame(parent, width=1000, height=600)
+        frame.pack(padx=50, pady=50)
 
         one = Label(frame, text="One", bg="red")
         one.pack(fill=X)
@@ -21,8 +51,7 @@ class TopMenu:
 
         ModeSelector = Menu(menu)
         menu.add_cascade(label="Mode", menu=ModeSelector)
-        ModeSelector.add_command(label="Full Manual", command=self.manual_mode(window))
+        ModeSelector.add_command(label="Full Manual", command=self.manual_mode)
 
-    def manual_mode(self, window):
-        print("Switching to manual mode")
-        window.delete(ALL)
+    def manual_mode(self):
+        print("Switching to manual mode")
\ No newline at end of file
diff --git a/__pycache__/cage_func.cpython-37.pyc b/__pycache__/cage_func.cpython-37.pyc
deleted file mode 100644
index f1aaeae..0000000
Binary files a/__pycache__/cage_func.cpython-37.pyc and /dev/null differ
diff --git a/__pycache__/globals.cpython-37.pyc b/__pycache__/globals.cpython-37.pyc
deleted file mode 100644
index 18c683c..0000000
Binary files a/__pycache__/globals.cpython-37.pyc and /dev/null differ
diff --git a/globals.py b/globals.py
index 7181e66..2846827 100644
--- a/globals.py
+++ b/globals.py
@@ -18,5 +18,5 @@ global MAX_VOLTS
 
 global ARDUINO
 
-RELAY_PINS = [1, 2, 3]  # digital pin on the Arduino for switching relay of each axis [x,y,z]
+RELAY_PINS = [15, 16, 17]  # pin on the Arduino for switching relay of each axis [x,y,z]
 
diff --git a/main.py b/main.py
index 20169d0..3aea811 100644
--- a/main.py
+++ b/main.py
@@ -24,8 +24,7 @@ g.Z_PORT = "COM2"
 # Code starts here------------------------------------------
 g.MAX_AMPS = np.sqrt(g.MAX_WATTS / g.RESISTANCES)  # calculate maximum currents in each axis
 
-mainWindow = Tk()
-MainFrame = ui.EmptyFrame(mainWindow)
+mainWindow = ui.HelmholtzGUI()
 Menu = ui.TopMenu(mainWindow)
 
 mainWindow.mainloop()