Using Mac USB after AVR install. I'm looking in /dev for the cu.PL2303-0000211A file and there's nothing even remotely like it, just a couple of bluetooth things. There's nothing with "USB" in the name - mostly ttyxxx and ptyxx stuff. Is there another /dev somewhere else?

The USB - serial device IS showing up under system info when plugged in as:

USB-Serial Controller:

  Product ID:   0x2303
  Vendor ID:    0x067b  (Prolific Technology, Inc.)
  Version:  3.00
  Speed:    Up to 12 Mb/sec
  Manufacturer: Prolific Technology Inc.
  Location ID:  0x04100000 / 4

I've installed AVR MacPack (twice) and I changed to gcc4.

Oh, and I just re-installed the USD-serial driver package. Still no luck.

OK - I went to Prolific's website (http://www.prolific.com.tw/eng/downloads.asp?ID=31) and downloaded/installed the latest driver (about 2 years younger than the NerdKits one) and I now have a cu.usbserial and a tty.usbserial file in my /dev folder (NOTE: These files only show up when the cable is connected - not sure why that is, but moving on....)

I can't test it with the temp sensor kit until tomorrow. Update to follow.

BTW, OS X Lion wanted to configure this cable as a new modem. I just told it to ignore it as a network device. I'm not sure I want it to try to handshake to my MCU or not. We'll see.

Success. The new driver from Prolific loaded a "tty.usbserial" file in my /dev folder, and that's what I pointed the makefile to and everything works.

I should point out that the Mac sees the serial cable as a modem and will ask you to configure it as such. I just left mine as "Not configured" and it's apparently not a problem.

Thanks. I had the same problem, it did not even appear when plugged in, except I did have a COM 7 port already there. I have the most recent macbook air for reference. The chip displayed the initialload script after programming so it was successful. The new driver was necessary from prolific.