On Mac OSX Mavericks, why does Arduino Uno uses serial port named /dev/cu.usbmodemfa131
while Arduino Nano uses /dev/cu.usbserial-A702NY8S
?
Are they using different FTDI drivers?
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Sign up to join this communityOn Mac OSX Mavericks, why does Arduino Uno uses serial port named /dev/cu.usbmodemfa131
while Arduino Nano uses /dev/cu.usbserial-A702NY8S
?
Are they using different FTDI drivers?
Drivers are different. On older boards, such as Duemilanove you may need to actually download serial drivers to talk to them at all in Lion, Mountain Lion, Mavericks. There's some discussion of that problem here.
It's really down to the manufacturer and what they identify their USB side as. I have found that Arduino(tm) provide a more meaningful (to me) identifier, eg /dev/cu.usbmodemfa131
Whilst the boards that use the FTDI chip have the more serialised numbers /dev/cu.usbserial-A702NY8S
.
The Uno is not using FTDI drivers at all, since it does USB through an ATmega16u2, not an FTDI chip.