When I plugin my Osepp Uno (off-brand of Arduino Uno), the LED flickers a bunch, then the RX and TX lights do the same. But when I
ls /dev/ | grep -i usb
I get nothing. When I startup the arduino IDE, and go to Tools -> Serial Port, All I get is:
/dev/tty.Bluetooth-PDA-Sync /dev/cu.Bluetooth-PDA-Sync /dev/tty.Bluetooth-Modem (<- this one is the default) /dev/cu.Bluetooth-Modem
I tried to upload to all of the four above serial port connections, and the first two fail with
avrdude: stk500_recv(): programmer is not responding and the latter two respond with
Serial port ... is already in use. Try quitting any programs... They are obviously not the arduino port.
I don't think that the OS is instantiating communication correctly, because there is not /dev/tty.usbserial or /dev/tty.usbmodem or /dev/ttyUSB0 (this is what my board is on linux systems). It works in Linux, when I select Uno. I can upload to it and watch the serial port and everything one would expect in Linux.