diff --git a/.github/python-test.yml b/.github/python-test.yml
new file mode 100644
index 0000000..d526bd6
--- /dev/null
+++ b/.github/python-test.yml
@@ -0,0 +1,41 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
+
+name: Python package
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.13"]
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install flake8 pytest
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+    - name: Lint with flake8
+      run: |
+        # TODO: Enable this later
+        # stop the build if there are Python syntax errors or undefined names
+        # flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        # flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Test with pytest
+      run: |
+        pytest
diff --git a/src/meshcore/ble_cx.py b/src/meshcore/ble_cx.py
index 517ef1b..d0aa14d 100644
--- a/src/meshcore/ble_cx.py
+++ b/src/meshcore/ble_cx.py
@@ -49,7 +49,8 @@ class BLEConnection:
         if self.client:
             logger.debug("Using pre-configured BleakClient.")
             # If a client is already provided, ensure its disconnect callback is set
-            self.client._disconnected_callback = self.handle_disconnect
+            assert isinstance(self.client, BleakClient)
+            self.client.set_disconnected_callback(self.handle_disconnect)
             self.address = self.client.address
         else:
 
diff --git a/src/meshcore/events.py b/src/meshcore/events.py
index c21d679..2ee3d56 100644
--- a/src/meshcore/events.py
+++ b/src/meshcore/events.py
@@ -1,4 +1,5 @@
 from enum import Enum
+import inspect
 import logging
 from typing import Any, Dict, Optional, Callable, List, Union
 import asyncio
@@ -148,6 +149,7 @@ class EventDispatcher:
             logger.debug(
                 f"Dispatching event: {event.type}, {event.payload}, {event.attributes}"
             )
+
             for subscription in self.subscriptions.copy():
                 # Check if event type matches
                 if (
@@ -165,15 +167,24 @@ class EventDispatcher:
                             for key, value in subscription.attribute_filters.items()
                         ):
                             continue
-                    try:
-                        result = subscription.callback(event.clone())
-                        if asyncio.iscoroutine(result):
-                            await result
-                    except Exception as e:
-                        print(f"Error in event handler: {e}")
-
+                    
+                    # Fire the call back asychronously
+                    asyncio.create_task(self._execute_callback(subscription.callback, event.clone()))
+                        
             self.queue.task_done()
 
+    async def _execute_callback(self, callback, event):
+        """Execute a callback with proper error handling"""
+        try:
+            if asyncio.iscoroutinefunction(callback):
+                await callback(event)
+            else:
+                result = callback(event)
+                if inspect.iscoroutine(result):
+                    await result
+        except Exception as e:
+            logger.error(f"Error in event handler for {event.type}: {e}", exc_info=True)
+
     async def start(self):
         if not self.running:
             self.running = True
diff --git a/src/meshcore/meshcore.py b/src/meshcore/meshcore.py
index 5b21871..04db83e 100644
--- a/src/meshcore/meshcore.py
+++ b/src/meshcore/meshcore.py
@@ -132,6 +132,7 @@ class MeshCore:
         auto_reconnect: bool = False,
         max_reconnect_attempts: int = 3,
     ) -> "MeshCore":
+
         """
         Create and connect a MeshCore instance using BLE connection.
 
@@ -141,7 +142,6 @@ class MeshCore:
                                             If provided, 'address' is ignored for connection
                                             but can be used for identification.
         """
-
         connection = BLEConnection(address=address, client=client)
 
         mc = cls(
@@ -152,6 +152,7 @@ class MeshCore:
             auto_reconnect=auto_reconnect,
             max_reconnect_attempts=max_reconnect_attempts,
         )
+
         await mc.connect()
         return mc
 
diff --git a/src/meshcore/serial_cx.py b/src/meshcore/serial_cx.py
index ab48d2b..e547fc9 100644
--- a/src/meshcore/serial_cx.py
+++ b/src/meshcore/serial_cx.py
@@ -22,6 +22,7 @@ class SerialConnection:
         self.inframe = b""
         self._disconnect_callback = None
         self.cx_dly = cx_dly
+        self._connected_event = asyncio.Event()
 
     class MCSerialClientProtocol(asyncio.Protocol):
         def __init__(self, cx):
@@ -29,20 +30,18 @@ class SerialConnection:
 
         def connection_made(self, transport):
             self.cx.transport = transport
-            logger.debug("port opened")
-            if (
-                isinstance(transport, serial_asyncio.SerialTransport)
-                and transport.serial
-            ):
-                transport.serial.rts = (
-                    False  # You can manipulate Serial object via transport
-                )
+            logger.debug('port opened')
+            if isinstance(transport, serial_asyncio.SerialTransport) and transport.serial:
+                transport.serial.rts = False  # You can manipulate Serial object via transport
+            self.cx._connected_event.set()
 
         def data_received(self, data):
             self.cx.handle_rx(data)
 
         def connection_lost(self, exc):
-            logger.debug("Serial port closed")
+            logger.debug('Serial port closed')
+            self.cx._connected_event.clear()
+
             if self.cx._disconnect_callback:
                 asyncio.create_task(self.cx._disconnect_callback("serial_disconnect"))
 
@@ -56,6 +55,8 @@ class SerialConnection:
         """
         Connects to the device
         """
+        self._connected_event.clear()
+        
         loop = asyncio.get_running_loop()
         await serial_asyncio.create_serial_connection(
             loop,
@@ -64,7 +65,7 @@ class SerialConnection:
             baudrate=self.baudrate,
         )
 
-        await asyncio.sleep(self.cx_dly)  # wait for cx to establish
+        await self._connected_event.wait()
         logger.info("Serial Connection started")
         return self.port
 
@@ -109,6 +110,7 @@ class SerialConnection:
         if self.transport:
             self.transport.close()
             self.transport = None
+            self._connected_event.clear()
             logger.debug("Serial Connection closed")
 
     def set_disconnect_callback(self, callback):
diff --git a/tests/test_ble_connection.py b/tests/test_ble_connection.py
index 089b6f1..15512e0 100644
--- a/tests/test_ble_connection.py
+++ b/tests/test_ble_connection.py
@@ -8,9 +8,9 @@ from meshcore.ble_cx import (
     UART_RX_CHAR_UUID,
 )
 
-
 class TestBLEConnection(unittest.TestCase):
     @patch("meshcore.ble_cx.BleakClient")
+
     def test_ble_connection_and_disconnection(self, mock_bleak_client):
         """
         Tests the BLEConnection class for connecting and disconnecting from a BLE device.
@@ -34,6 +34,7 @@ class TestBLEConnection(unittest.TestCase):
         mock_client_instance.disconnect.assert_called_once()
 
     @patch("meshcore.ble_cx.BleakClient")
+
     def test_send_data(self, mock_bleak_client):
         """
         Tests the send method of the BLEConnection class.
@@ -65,17 +66,15 @@ class TestBLEConnection(unittest.TestCase):
         mock_client.start_notify = AsyncMock()
         mock_client.write_gatt_char = AsyncMock()
         mock_client.is_connected = True
-
         mock_service = MagicMock()
         mock_char = MagicMock()
         mock_char.uuid = UART_RX_CHAR_UUID
-        mock_char.write_gatt_char = mock_client.write_gatt_char
-
+        mock_char.write_gatt_char = mock_client.write_gatt_char 
         mock_service.get_characteristic.return_value = mock_char
         mock_client.services.get_service.return_value = mock_service
 
         return mock_client
 
+if __name__ == '__main__':
 
-if __name__ == "__main__":
     unittest.main()