diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..90f924d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+drive/opt/drive-ctl/__pycache__/
diff --git a/README.md b/README.md
index 65a5e01..cdba7b5 100644
--- a/README.md
+++ b/README.md
@@ -192,12 +192,26 @@ For Web-UI-Controller you need to have access to the raspberry-pi i.e. via a hot
 
     sudo apt install -y python3-venv
     python3 -m venv /opt/drive-ctl-venv
-
+    
+    sudo chown -R $USER:$USER /opt/drive-ctl-venv
     /opt/drive-ctl-venv/bin/pip install fastapi uvicorn pyserial
 
     source /opt/drive-ctl-venv/bin/activate
     pip install fastapi uvicorn pyserial
 
+Configure Arduino-USB-ID
+
+    ls -l /dev/serial/by-id/ 2>/dev/null
+
+Example Output
+
+    usb-1a86_USB2.0-Serial-if00-port0 -> ../../ttyUSB0
+
+Watch USB devices while replugging
+
+    dmesg -T | tail -n 80
+
+Configure the USB-Device-ID in /opt/helva-robot/drive/opt/drive-ctl/server.py
 
 ### Activate Web Control Interface
 
@@ -223,4 +237,14 @@ Check Serial device is stable, otherwise create a udev rule
 
     http://pi-ip/drive/
 
+### Debug drive-ctl WebUI
+
+check local webservice
+
+    curl -s http://127.0.0.1:8002/health
+
+should be -> {"ok": true, ... } -> otherwise look at the logs:
+
+    journalctl -u drive-ctl -n 80 --no-pager
+
 
diff --git a/drive/etc/nginx/snippets/drive.conf b/drive/etc/nginx/snippets/drive.conf
index b4e9bd2..07fa354 100644
--- a/drive/etc/nginx/snippets/drive.conf
+++ b/drive/etc/nginx/snippets/drive.conf
@@ -1,15 +1,16 @@
 
-  location /drive/ {
+  location ^~ /drive/ {
     alias /opt/helva-robot/drive/var/www/drive/;
     try_files $uri $uri/ /drive/index.html;
   }
 
-  location /drive-ws {
+  location = /drive-ws {
     proxy_pass http://127.0.0.1:8002/ws;
     proxy_http_version 1.1;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection "Upgrade";
     proxy_set_header Host $host;
+    proxy_read_timeout 3600;
   }
 
   location /drive-health {
diff --git a/drive/opt/drive-ctl/server.py b/drive/opt/drive-ctl/server.py
index 955f76f..b6b2149 100644
--- a/drive/opt/drive-ctl/server.py
+++ b/drive/opt/drive-ctl/server.py
@@ -5,7 +5,7 @@ import serial
 from fastapi import FastAPI, WebSocket, WebSocketDisconnect
 from fastapi.responses import HTMLResponse
 
-SERIAL_PORT = "/dev/ttyACM0"   # ggf. /dev/ttyUSB0
+SERIAL_PORT = "/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0"   # ggf. /dev/ttyUSB0
 BAUD = 115200
 
 # Safety: if websocket stops sending, we also stop.
@@ -30,7 +30,7 @@ def send_lr(l: int, r: int):
 def health():
   return {"ok": True, "serial": SERIAL_PORT}
 
-@app.websocket("/ws")
+@app.websocket("/drive-ws")
 async def ws(websocket: WebSocket):
   global last_msg_ts
   await websocket.accept()
diff --git a/face/etc/nginx/sites-available/face b/face/etc/nginx/sites-available/face
index db0e50c..f8d47c7 100644
--- a/face/etc/nginx/sites-available/face
+++ b/face/etc/nginx/sites-available/face
@@ -2,6 +2,8 @@ server {
     listen 80;
     server_name _;
 
+    include /opt/helva-robot/drive/etc/nginx/snippets/drive.conf;
+
     root /opt/helva-robot/face/var/www/html;
     index index.html;
 
@@ -31,6 +33,5 @@ server {
         add_header Cache-Control no-cache;
     }
 
-    include /opt/helva-robot/drive/etc/nginx/snippets/drive.conf;
 }