In this week I used the sonar board in input assignmeent to make somthing like radar so I use processing to visual the data from the sensor to the screen :)

I download Processing also I learnd some basics form that link : processing.org/tutorials/
As you can see this app is so easy to use , but if you now about the serial port it's called a problems port
but you can know about the serial from here : Serial read

I use this code

 

and here is the resalt ;)

I think this app very useful in specific applications,anyway it was very fuuny :D