diff --git a/pyproject.toml b/pyproject.toml
index 58bd29f..401b4d8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ dependencies = [
     "matplotlib",
     "pyqt6",
     "NQRduck",
+    "pyserial",
 ]
 
 [project.entry-points."nqrduck"]
diff --git a/src/nqrduck_autotm/controller.py b/src/nqrduck_autotm/controller.py
index d16d5e5..81a1e88 100644
--- a/src/nqrduck_autotm/controller.py
+++ b/src/nqrduck_autotm/controller.py
@@ -1,4 +1,17 @@
+import logging
+from serial.tools.list_ports import comports
 from nqrduck.module.module_controller import ModuleController
 
+logger = logging.getLogger(__name__)
+
 class AutoTMController(ModuleController):
-    pass
\ No newline at end of file
+    
+
+    def find_devices(self):
+        """Scan for available serial devices and add them to the model as available devices. """
+        logger.debug("Scanning for available serial devices")
+        ports = comports()
+        self.module.model.available_devices = [port.device for port in ports]
+        logger.debug("Found %s devices", len(self.module.model.available_devices))
+        for device in self.module.model.available_devices:
+            logger.debug("Found device: %s", device)
diff --git a/src/nqrduck_autotm/model.py b/src/nqrduck_autotm/model.py
index 04c195e..8db4226 100644
--- a/src/nqrduck_autotm/model.py
+++ b/src/nqrduck_autotm/model.py
@@ -1,4 +1,14 @@
+from PyQt6.QtCore import pyqtSignal
 from nqrduck.module.module_model import ModuleModel
 
 class AutoTMModel(ModuleModel):
-    pass
\ No newline at end of file
+    available_devices_changed = pyqtSignal(list)
+
+    @property
+    def available_devices(self):
+        return self._available_devices
+    
+    @available_devices.setter
+    def available_devices(self, value):
+        self._available_devices = value
+        self.available_devices_changed.emit(value)
diff --git a/src/nqrduck_autotm/resources/autotm_widget.ui b/src/nqrduck_autotm/resources/autotm_widget.ui
index 56feca3..e24edbe 100644
--- a/src/nqrduck_autotm/resources/autotm_widget.ui
+++ b/src/nqrduck_autotm/resources/autotm_widget.ui
@@ -54,6 +54,13 @@
          </property>
         </widget>
        </item>
+       <item row="1" column="0">
+        <widget class="QPushButton" name="refreshButton">
+         <property name="text">
+          <string>Refresh</string>
+         </property>
+        </widget>
+       </item>
       </layout>
      </item>
      <item>
diff --git a/src/nqrduck_autotm/view.py b/src/nqrduck_autotm/view.py
index 5a3971b..a513975 100644
--- a/src/nqrduck_autotm/view.py
+++ b/src/nqrduck_autotm/view.py
@@ -1,5 +1,6 @@
 import logging
 from PyQt6.QtWidgets import QWidget
+from PyQt6.QtCore import pyqtSlot
 from nqrduck.module.module_view import ModuleView
 from .widget import Ui_Form
 
@@ -13,4 +14,18 @@ class AutoTMView(ModuleView):
         widget = QWidget()
         self._ui_form = Ui_Form()
         self._ui_form.setupUi(self)
-        self.widget = widget
\ No newline at end of file
+        self.widget = widget
+
+        # On clicking of the refresh button scan for available usb devices
+        self._ui_form.refreshButton.clicked.connect(self.module.controller.find_devices)
+
+        # Connect the available devices changed signal to the on_available_devices_changed slot
+        self.module.model.available_devices_changed.connect(self.on_available_devices_changed)
+
+    @pyqtSlot(list)
+    def on_available_devices_changed(self, available_devices):
+        """Update the available devices list in the view. """
+        logger.debug("Updating available devices list")
+        self._ui_form.portBox.clear()
+        self._ui_form.portBox.addItems(available_devices)
+        logger.debug("Updated available devices list")
\ No newline at end of file
diff --git a/src/nqrduck_autotm/widget.py b/src/nqrduck_autotm/widget.py
index 92c66b7..8027ca3 100644
--- a/src/nqrduck_autotm/widget.py
+++ b/src/nqrduck_autotm/widget.py
@@ -40,6 +40,9 @@ class Ui_Form(object):
         self.pushButton = QtWidgets.QPushButton(parent=Form)
         self.pushButton.setObjectName("pushButton")
         self.gridLayout_2.addWidget(self.pushButton, 1, 1, 1, 1)
+        self.refreshButton = QtWidgets.QPushButton(parent=Form)
+        self.refreshButton.setObjectName("refreshButton")
+        self.gridLayout_2.addWidget(self.refreshButton, 1, 0, 1, 1)
         self.verticalLayout_2.addLayout(self.gridLayout_2)
         self.label_3 = QtWidgets.QLabel(parent=Form)
         font = QtGui.QFont()
@@ -123,6 +126,7 @@ class Ui_Form(object):
         self.label_2.setText(_translate("Form", "Connection Settings:"))
         self.label.setText(_translate("Form", "Port:"))
         self.pushButton.setText(_translate("Form", "Connect"))
+        self.refreshButton.setText(_translate("Form", "Refresh"))
         self.label_3.setText(_translate("Form", "T&M Type:"))
         self.label_4.setText(_translate("Form", "Frequency Sweep:"))
         self.label_8.setText(_translate("Form", "MHz"))