I’m just got a Arduino UNO R3, i’m running on MAC 10.9 and IDE 1.6.4, when i try to select a port, i only have /dev/tty.usbmodem. I already upgrade FTDI and did it everything i can do and know i’m stock and i don’t kwon what more to do. I need the /dev/tty.usbserial port.
I already tried with a new usb cable.
In order to used a serialport do i have to connect a external power supply to mi arduino o with usb power supply is it enough?