diff --git a/interface.py b/interface.py
index e3660bc..10508c7 100644
--- a/interface.py
+++ b/interface.py
@@ -133,7 +133,8 @@ def readControllerCurrentsAndData() -> bool:
         dmx_address_field.delete(0, tk.END)
         dmx_address_field.insert(tk.END, str(address))
 
-    global modes
+    global modesself.ui.DeviceSelection.addItems(['/dev/ttyUSB0', '/dev/ttyUSB2'])
+
     modes = []
 
     setStatus(f'Чтение режимов {controller.controller.ser.port}...')
diff --git a/main.py b/main.py
index d2cd756..b88b7bd 100644
--- a/main.py
+++ b/main.py
@@ -1,8 +1,9 @@
+import time
+
 from PyQt6 import QtCore, QtGui, QtWidgets
 from ui import Ui_Controller
 
 import controller.controller_reifined as controller
-controller = controller.ControllerInterface(controller.ControllerRefined(0xFFFFFFFFFFFF, 0x112233445542))
 
 class Window(QtWidgets.QMainWindow):
     def __init__(self):
@@ -10,8 +11,29 @@ class Window(QtWidgets.QMainWindow):
         self.ui = Ui_Controller()
         self.ui.setupUi(self)
 
-        self.hoverFilter = self.ComboBoxHoverEventFilter(self.ui.DeviceSelection, self.hover)
+        # controller
+        self.controller = controller.ControllerInterface(controller.ControllerRefined(0xFFFFFFFFFFFF, 0x112233445542))
 
+        # dev selection
+        self.hoverFilter = self.ComboBoxHoverEventFilter(self.ui.DeviceSelection, self.refreshDeviceList)
+        self.connected = False
+
+        # qt styles
+        self.redLineEdit = "QLineEdit { background: rgb(255, 0, 0); selection-background-color: rgb(111, 136, 222); }"
+        self.defLineEdit = "QLineEdit { }"
+
+        # object containers
+        self.currentFields = [
+            self.ui.Current1Field,
+            self.ui.Current2Field,
+            self.ui.Current3Field,
+            self.ui.Current4Field,
+        ]
+
+        # modes, currents, etc
+        self.modes = []
+
+        # connect signals
         self.connectMethods()
 
     class ComboBoxHoverEventFilter(QtCore.QObject):
@@ -21,20 +43,105 @@ class Window(QtWidgets.QMainWindow):
             self.onEnter = onEnter
 
         def eventFilter(self, obj, event):
-            if event.type() == QtCore.QEvent.Type.Enter:  # Наведение мыши
+            if event.type() == QtCore.QEvent.Type.Enter:
                 self.onEnter()
             return super().eventFilter(obj, event)
 
     def connectMethods(self):
-        self.ui.DeviceSelection.addItems(['/dev/ttyUSB1', '/dev/ttyUSB2'])
-        self.ui.DeviceSelection.currentTextChanged.connect(self.deviceSelected)
+        self.ui.DeviceSelection.activated.connect(self.deviceSelected)
         self.ui.DeviceSelection.installEventFilter(self.hoverFilter)
 
-    def deviceSelected(self, device: str):
+    def resetAllStyles(self) -> None:
+        for f in self.currentFields:
+            f.setStyleSheet(self.defLineEdit)
+
+    def clearAllFields(self) -> None:
+        for f in self.currentFields:
+            f.setText("")
+
+    def setStatus(self, text: str) -> None  :
+        print(text)
+
+    def deviceSelected(self, deviceIndex: int):
+        device = self.ui.DeviceSelection.itemText(deviceIndex)
+        self.connected = False
+        self.resetAllStyles()
+        self.clearAllFields()
+
+        self.setStatus(f'Подключение к {device}...')
+
+        self.controller.close()
+        self.controller.connect(device)
+
         print(device)
 
-    def hover(self):
-        print('a')
+        if self.readControllerCurrentsAndData():
+            self.setStatus(f'Выбранный порт: {device}')
+            self.connected = True
+        else:
+            self.setStatus(f'Не удалось подключиться к {device}')
+            self.ui.DeviceSelection.clear()
+            self.connected = False
+            self.controller.close()
+
+    def readControllerCurrentsAndData(self) -> bool:
+        self.setStatus(f'Чтение токов {self.controller.controller.ser.port}...')
+        values = self.controller.readCurrents()
+
+        if not values:
+            for f in self.currentFields:
+                f.setStyleSheet(self.redLineEdit)
+        else:
+            for i, f in enumerate(self.currentFields):
+                f.setStyleSheet(self.defLineEdit)
+                f.setText(str(values[i] * 10))
+
+        self.setStatus(f'Чтение адреса {self.controller.controller.ser.port}...')
+        address = self.controller.readAddress()
+
+        if address == -1:
+            self.ui.DmxAddressField.setStyleSheet(self.redLineEdit)
+        else:
+            self.ui.DmxAddressField.setStyleSheet(self.defLineEdit)
+            self.ui.DmxAddressField.setText(str(address))
+
+        self.modes = []
+
+        self.setStatus(f'Чтение режимов {self.controller.controller.ser.port}...')
+        dev_info = self.controller.readDeviceInfo()
+        if dev_info:
+            mode_count = dev_info[2]
+            for index in range(mode_count):
+                self.setStatus(f'Чтение режима {index + 1} {self.controller.controller.ser.port}...')
+                mode = self.controller.readMode(index)
+                if not mode:
+                    self.modes = []
+                    break
+                self.modes.append(mode)
+                time.sleep(0.05)
+
+            if not self.modes:
+                self.ui.ModeSelection.clear()
+                self.ui.ModeSelection.setCurrentText('ERROR')
+            else:
+                self.ui.ModeSelection.setStyleSheet('QComboBox {}')
+                self.ui.ModeSelection.clear()
+                for m in self.modes:
+                    self.ui.ModeSelection.addItem(m[1])
+
+                mode_names = []
+                for index, m in enumerate(self.modes):
+                    mode_names.append(f'{index + 1}:{m[1]}')
+
+                self.ui.ModeSelection.setCurrentText(mode_names[dev_info[1] - 1])
+                self.ui.ModeSelection.clear()
+                self.ui.ModeSelection.addItems(mode_names)
+
+        return values or address != -1 or self.modes
+
+    def refreshDeviceList(self):
+        self.ui.DeviceSelection.clear()
+        self.ui.DeviceSelection.addItems(self.controller.readComPorts())
 
 if __name__ == '__main__':
     import sys
diff --git a/ui.py b/ui.py
index 7b50464..45f7b4e 100644
--- a/ui.py
+++ b/ui.py
@@ -186,7 +186,6 @@ class Ui_Controller(object):
         _translate = QtCore.QCoreApplication.translate
         Controller.setWindowTitle(_translate("Controller", "Controller"))
         self.ComPort.setText(_translate("Controller", "COM Порт:"))
-        self.DeviceSelection.setItemText(0, _translate("Controller", "/dev/ttyUSB0"))
         self.DmxAddress.setText(_translate("Controller", "DMX Адрес:"))
         self.DmxAddressField.setText(_translate("Controller", "10"))
         self.DmxAddressField.setPlaceholderText(_translate("Controller", "no data"))