diff --git a/app/app.py b/app/app.py
index 983c208..e087eea 100644
--- a/app/app.py
+++ b/app/app.py
@@ -7,6 +7,7 @@
 from serial.tools import list_ports
 
 from tools import set_background_color
+from mainview import MainView
 
 FPS = 20
 
@@ -75,45 +76,21 @@ def _update(self):
             return
         pass
 
-class MyWidget(QtWidgets.QWidget):
-    def __init__(self):
-        super(MyWidget, self).__init__()
-
-        availablePorts = list_ports.comports()
-
-        portsString = ''.join([p.device + '\n' for p in availablePorts])
-
-        self.hello = ["Hallo Welt", "Hei maailma", "Hola Mundo", "Привет мир"]
-
-        self.button = QtWidgets.QPushButton("Click me!")
-        self.text = QtWidgets.QLabel(portsString)
-        self.text.setAlignment(QtCore.Qt.AlignCenter)
-
-        self.layout = QtWidgets.QVBoxLayout()
-        self.layout.addWidget(self.text)
-        self.layout.addWidget(self.button)
-        self.setLayout(self.layout)
-
-        self.button.clicked.connect(self.magic)
-
-
-
-
-    def magic(self):
-        self.text.setText(random.choice(self.hello))
-
-
 if __name__ == "__main__":
     app = QtWidgets.QApplication([])
 
-    widget = MyWidget()
 
     window = MainWindow()
-    window.setCentralWidget(widget)
+
 
     window.show()
     signal.signal(signal.SIGINT, window.quit)
     # signal.signal(signal.SIGINT, signal.SIG_DFL)
 
+    toolbar = QtWidgets.QToolBar()
+    window.addToolBar(toolbar)
+    widget = MainView(toolbar)
+    window.setCentralWidget(widget)
+
     if sys.flags.interactive != 1:
         sys.exit(app.exec_())
diff --git a/app/mainview.py b/app/mainview.py
new file mode 100644
index 0000000..44c20b9
--- /dev/null
+++ b/app/mainview.py
@@ -0,0 +1,43 @@
+import random
+from PySide2 import Qt, QtCore, QtWidgets, QtGui
+import serial
+from serial.tools import list_ports
+
+class MainView(QtWidgets.QWidget):
+    def __init__(self, toolbar):
+        super(MainView, self).__init__()
+
+        availablePorts = list_ports.comports()
+
+        portsString = ''.join([p.device + '\n' for p in availablePorts])
+
+        self.hello = ["Hallo Welt", "Hei maailma", "Hola Mundo", "Привет мир"]
+
+
+        self.toolbar = toolbar
+
+
+        self.button = QtWidgets.QPushButton("Click me!")
+        self.text = QtWidgets.QLabel("Text")
+        self.text.setAlignment(QtCore.Qt.AlignCenter)
+
+
+
+        self.dropdown = QtWidgets.QComboBox()
+        self.dropdown.addItems([p.device for p in availablePorts])
+        self.toolbar.addWidget(QtWidgets.QLabel("Select COM Port:"))
+        self.toolbar.addWidget(self.dropdown)
+
+
+        self.layout = QtWidgets.QVBoxLayout()
+        self.layout.addWidget(self.text)
+        self.layout.addWidget(self.button)
+        self.setLayout(self.layout)
+
+        self.button.clicked.connect(self.magic)
+
+
+
+
+    def magic(self):
+        self.text.setText(random.choice(self.hello))
\ No newline at end of file
diff --git a/app/tools.py b/app/tools.py
new file mode 100644
index 0000000..7024620
--- /dev/null
+++ b/app/tools.py
@@ -0,0 +1,55 @@
+""" Some utility functions for PyQt widgets """
+
+from PySide2.QtGui import QPalette, QColor
+from PySide2 import QtWidgets
+
+def set_background_color(widget, color: str):
+    """ set widget color to color: str"""
+    pal = QPalette()
+    # set black background
+    pal.setColor(QPalette.Background, QColor(color))
+    widget.setAutoFillBackground(True)
+    widget.setPalette(pal)
+
+def set_button_color(button, color: str):
+    """ set button color to color: str"""
+    pal = button.palette()
+    pal.setColor(QPalette.Button, QColor(color))
+    button.setAutoFillBackground(True)
+    button.setPalette(pal)
+    button.update()
+
+def bold_label(text, size=13):
+    """ Create a label with font-weight bold """
+    label = QtWidgets.QLabel(text)
+    label.setStyleSheet("font-weight: bold; font-size: {}px".format(size))
+    label.update()
+    return label
+
+def spacer():
+    """ Returns empty widget that expands to all available space """
+    s = QtWidgets.QWidget()
+    s.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Preferred)
+    return s
+
+
+
+class Row(QtWidgets.QWidget):
+    """Easily add widgets in a horizontal layout"""
+
+    def __init__(self, *widgets):
+        super().__init__()
+        layout = QtWidgets.QHBoxLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+        for w in widgets:
+            layout.addWidget(w)
+
+class Column(QtWidgets.QWidget):
+    """Easily add widgets in a vertical layout"""
+
+    def __init__(self, *widgets):
+        super().__init__()
+        layout = QtWidgets.QVBoxLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+        for w in widgets:
+            layout.addWidget(w)