Hi everybody,
I have just got my first arduino (it is an uno). I am using a mac with lion and ardunio 1.0.4. When I try to do the blink example when i go to select a serial port i get the options of: /dev/tty/bluetooth-pda-sync /dev/cc/bluetooth-pda-sync /dev/tty/bluetooth-modem or /dev/cc/bluetooth-moden whichever one I try to use either says its already being used (the modem ones) , problem uploading to board (the pda ones)
could anyone offer some help?
Thanks!
Hey ! I have the same problem. I check on google and didn't find any solution. I try to see if my board was recognized. for that I opened usb prober and when I plugged my board I get :
Full Speed device @ 2 (0x04100000): ............................................. Composite device: "USB-Serial Controller"
From what I've read, I think we should get a serialport like usbmodemXXX. When I plugg my board I have no popup. What can I do to continue my investigation? 
Thanks
Yeah I have the same thing, on the tutorial "getting started with ardunio" on ardunio.cc they say select a port that I don't have in my four options. I don't get a popup either. Can anyone offer any advice?
Thanks
Hey all. I come back with news. Check your version of your board. I bought my board on internet and I get this one Robot Control Board ATMEGA328 ATMEGA328P Arduino UNO Compatible + USB Cable - dipmicro electronics. It look like a arduino. But it's not like. You have to download this driver http://dipmicro.com/files/PL2303_Prolific_DriverInstaller_v130.zip and install it on windows. This driver will create a com3.
I hope this will help some people.
Hi all, on a Mac the name of the port is usually something like /dev/tty.usbmodem<somenumber_and_letter>. It only shows up if (and when) the Arduino is connected. And there's no need to install drivers.
More details can be got from the System Profiler (in Applications/Utilities), under Hardware/USB. The Uno and most other Arduinos is seen as a communications device, the Leonardo can show something different (USB Prober is also a very good tool, and a USB-Serial controller is not what I would expect).
If the Arduino doesn't show up there may be different causes, but the first thing to do is try all the Usb ports available on the Mac, use different cables, and remove other Usb devices that can draw too much current from the Mac. Don't forget to watch the Arduino: is any LED on, or blinking, when connected? Which colors?