USB Serial Arduino, Rasberry local server Issues (Adress already in use)

Where Can I go to get help for my project which involves Interconnected Arduino over Serial (Hub) USB Running on a local Raspberry B Server?

I think there is a error in my socat/ local server configuration / or sketch because the local server is running and the iOS App is able to connect to the server but I get the message that the device is offline.

I want to get this running first and then start learning with the coding itself.

I am willing to pay for assistance because it came to a point where it is frustrating.
Where should I go?

many thanks!

Sounds like the server is up and running.

What code are you running on the Arduino? Is the Arduino connected via USB to the Pi or to another computer? You will need the blynk-ser script to connect the USB serial device to Blynk server.

I really appreciate your response.
yes the Arduino Board is directly connected to the Raspberry Local Blink server via USB.
The RaspberryB Server is connected via Ethernet to the Router.
The Raspberry has no Display or keyboard, everything works over the installed VNC Server.

yes i installed the blynk-ser script.

pi@raspberrypi:~/Arduino/libraries/Blynk/scripts $ ./
Warning: Server connection may be insecure!
[ Press Ctrl+C to exit ]
Connecting: TCP-LISTEN:8442,reuseaddr,fork,nodelay <-> TCP:,nodelay
2017/11/07 21:48:11 socat[3453] E bind(5, {AF=2}, 16): Address already in use
2017/11/07 21:48:11 socat[3453] N exit(1)
Reconnecting in 3s...

when running “nano /home/pi/Arduino/libraries/Blynk/scripts/” i get:

# Detect script path
pushd `dirname $0` > /dev/null
popd > /dev/null

# === Edit default options to match your need ===




The Sketch look like this: The sketch (used the sketchbuilder) look like this:

#include <SoftwareSerial.h>
SoftwareSerial SwSerial(10, 11); // RX, TX
#include <BlynkSimpleStream.h>
#include <DHT.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "myauthtoken";

#define DHTPIN 2          // What digital pin we're connected to

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11     // DHT 11
#define DHTTYPE DHT22   // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21   // DHT 21, AM2301

BlynkTimer timer;

// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void sendSensor()
  float h = dht.readHumidity();
  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

  if (isnan(h) || isnan(t)) {
    SwSerial.println("Failed to read from DHT sensor!");
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V5, h);
  Blynk.virtualWrite(V6, t);

void setup()
  // Debug console

  // Blynk will work through Serial
  // Do not read or write this serial manually in your sketch
  Blynk.begin(Serial, auth);


  // Setup a function to be called every second
  timer.setInterval(1000L, sendSensor);

void loop()