ofArduino / first step -> no connection

Hi there,

What are the most known reasons an arduino can connect with Arduino programm, but can not connect with ofArduino (Config. Windows7, Arduino Mega2560) ?

  
  
    m_arduino.connect("COM13");  
  

Cheers

![](http://forum.openframeworks.cc/uploads/default/2291/ofArduino Message.PNG)

You need to pass a baudrate as an argument when connecting

  
  
m_arduino.connect("COM13",9600);    
  

you can also check which com port your board is connected to via the Device Manager, depending on the board you will also find the baudrate changes, on a new UNO its 57600