diff --git a/main.py b/main.py
index 313b636..88bef32 100644
--- a/main.py
+++ b/main.py
@@ -14,50 +14,26 @@ auto_stop_timer = None # Timer for automatic VNC stop
 
 @app.route('/cast', methods=['POST'])
 def cast_spell():
-    machine = request.form.get('machine')
-    logging.info(f"Received POST request on /cast. Requested machine: {machine}")
+    ip_address = request.form.get('ip_address')
+    logging.info(f"Received POST request on /cast. Requested ip_address: {ip_address}")
+
+    if not ip_address:
+        logging.warning(f"Invalid or missing ip_address parameter: {ip_address}")
+        return f"Invalid or missing 'ip_address' parameter.", 400
 
     global auto_stop_timer
 
-    if machine == "trotec":
-        logging.info("Casting to Trotec.")
-        kill_vnc()  # Kill any existing VNC session first
-        cast_trotec()
-        # Restart auto-stop timer
-        if auto_stop_timer is not None and auto_stop_timer.is_alive():
-            auto_stop_timer.cancel()
-            logging.info("Cancelled previous auto-stop timer.")
-        auto_stop_timer = threading.Timer(AUTO_STOP_TIMEOUT_SECONDS, _auto_stop_vnc)
-        auto_stop_timer.start()
-        logging.info(f"Scheduled auto-stop for VNC in {AUTO_STOP_TIMEOUT_SECONDS} seconds.")
-        return f"Successfully cast to Trotec.", 200
-    elif machine == "thunder":
-        logging.info("Casting to Thunder.")
-        kill_vnc()  # Kill any existing VNC session first
-        cast_thunder()
-        # Restart auto-stop timer
-        if auto_stop_timer is not None and auto_stop_timer.is_alive():
-            auto_stop_timer.cancel()
-            logging.info("Cancelled previous auto-stop timer.")
-        auto_stop_timer = threading.Timer(AUTO_STOP_TIMEOUT_SECONDS, _auto_stop_vnc)
-        auto_stop_timer.start()
-        logging.info(f"Scheduled auto-stop for VNC in {AUTO_STOP_TIMEOUT_SECONDS} seconds.")
-        return f"Successfully cast to Thunder.", 200
-    elif machine == "xtool":
-        logging.info("Casting to XTool.")
-        kill_vnc()  # Kill any existing VNC session first
-        cast_xtool()
-        # Restart auto-stop timer
-        if auto_stop_timer is not None and auto_stop_timer.is_alive():
-            auto_stop_timer.cancel()
-            logging.info("Cancelled previous auto-stop timer.")
-        auto_stop_timer = threading.Timer(AUTO_STOP_TIMEOUT_SECONDS, _auto_stop_vnc)
-        auto_stop_timer.start()
-        logging.info(f"Scheduled auto-stop for VNC in {AUTO_STOP_TIMEOUT_SECONDS} seconds.")
-        return f"Successfully cast to XTool.", 200
-    else:
-        logging.warning(f"Invalid or missing machine parameter: {machine}")
-        return f"Invalid or missing 'machine' parameter. Use 'trotec' or 'thunder'.", 400
+    logging.info(f"Casting to {ip_address}.")
+    kill_vnc()  # Kill any existing VNC session first
+    cast_machine(ip_address)
+    # Restart auto-stop timer
+    if auto_stop_timer is not None and auto_stop_timer.is_alive():
+        auto_stop_timer.cancel()
+        logging.info("Cancelled previous auto-stop timer.")
+    auto_stop_timer = threading.Timer(AUTO_STOP_TIMEOUT_SECONDS, _auto_stop_vnc)
+    auto_stop_timer.start()
+    logging.info(f"Scheduled auto-stop for VNC in {AUTO_STOP_TIMEOUT_SECONDS} seconds.")
+    return f"Successfully cast to {ip_address}.", 200
 
 @app.route('/stop', methods=['POST'])
 def stop_cast():
@@ -79,9 +55,9 @@ def _auto_stop_vnc():
     kill_vnc()
     auto_stop_timer = None # Clear the timer reference
 
-def cast_trotec():
-    """Executes the xtightvncviewer command."""
-    command = "DISPLAY=:1 xtightvncviewer -viewonly -fullscreen 172.17.17.214"
+def cast_machine(ip_address):
+    """Executes the xtightvncviewer command for a given IP address."""
+    command = f"DISPLAY=:1 xtightvncviewer -viewonly -fullscreen {ip_address}"
     try:
         logging.info(f"Launching command: {command}")
         # Use Popen to run the command in the background (non-blocking)
@@ -90,39 +66,9 @@ def cast_trotec():
     except FileNotFoundError:
         # This error is more likely if the shell itself (e.g., /bin/sh) is not found,
         # or if 'xtightvncviewer' is not in PATH and the shell fails to find it.
-        logging.error(f"Failed to launch VNC for Trotec: Shell or VNC command might not be found. Ensure xtightvncviewer is in PATH and shell is available.")
+        logging.error(f"Failed to launch VNC for {ip_address}: Shell or VNC command might not be found. Ensure xtightvncviewer is in PATH and shell is available.")
     except Exception as e: # Catch other potential errors during Popen
-        logging.error(f"An error occurred while launching VNC for Trotec with Popen: {e}")
-
-def cast_thunder():
-    """Executes the xtightvncviewer command for Thunder."""
-    command = "DISPLAY=:1 xtightvncviewer -viewonly -fullscreen 172.17.17.215"
-    try:
-        logging.info(f"Launching command: {command}")
-        # Use Popen to run the command in the background (non-blocking)
-        subprocess.Popen(command, shell=True)
-        logging.info(f"Command '{command}' launched successfully.")
-    except FileNotFoundError:
-        # This error is more likely if the shell itself (e.g., /bin/sh) is not found,
-        # or if 'xtightvncviewer' is not in PATH and the shell fails to find it.
-        logging.error(f"Failed to launch VNC for Thunder: Shell or VNC command might not be found. Ensure xtightvncviewer is in PATH and shell is available.")
-    except Exception as e: # Catch other potential errors during Popen
-        logging.error(f"An error occurred while launching VNC for Thunder with Popen: {e}")
-
-def cast_xtool():
-    """Executes the xtightvncviewer command for XTool."""
-    command = "DISPLAY=:1 xtightvncviewer -viewonly -fullscreen 172.17.17.221"
-    try:
-        logging.info(f"Launching command: {command}")
-        # Use Popen to run the command in the background (non-blocking)
-        subprocess.Popen(command, shell=True)
-        logging.info(f"Command '{command}' launched successfully.")
-    except FileNotFoundError:
-        # This error is more likely if the shell itself (e.g., /bin/sh) is not found,
-        # or if 'xtightvncviewer' is not in PATH and the shell fails to find it.
-        logging.error(f"Failed to launch VNC for XTool: Shell or VNC command might not be found. Ensure xtightvncviewer is in PATH and shell is available.")
-    except Exception as e: # Catch other potential errors during Popen
-        logging.error(f"An error occurred while launching VNC for XTool with Popen: {e}")
+        logging.error(f"An error occurred while launching VNC for {ip_address} with Popen: {e}")
 
 def kill_vnc():
     """Executes the killall command for xtightvncviewer."""