Hello!
I'm new to the arduino world and this is my first post, so i apologize for any missteps! Anyway..
I've read other threads regarding difficulties connecting the nano via USB but in my reading none seem to be similar to mine.
When I first started using the sainsmart nano v.3.0 (http://www.amazon.com/gp/product/B00761NDHI/ref=oh_details_o05_s00_i02?ie=UTF8&psc=1) the USB serial port would not show up on the Arduino IDE, so I installed the FTDI drivers and it worked for a month or so ( I'm using a macbook pro running OS X 10.9.2). Then, seemingly randomly it would stop working again. I reinstalled the FTDI drivers and it worked for a day or so then wouldn't show up again. I must've done this 2 or 3 times and now the nano is not recognized at all. My Uno connects just fine however, and has done so throughout my issues with the nano. Only bluetooth ports show up when the nano is connected, even through the lights blink indicating it is on. Any help/suggestions would be greatly appreciated because at this point my nano is useless
The following link describes a similar problem: Connecting Arduino Nano via USB [MAC] - Installation & Troubleshooting - Arduino Forum
no help here, not a clue about Macintosh, except that are juicer than Red Delicious but not as shinny.
however, I see to recall someone saying they use wireless to connect and upload sketches. if that is an option, it could eliminate the need for a direct connection.
Are you using the D2XX or the VCP drivers? I've had more luck with the VCP drivers on FTDI but not a heck of a lot more. I had to stop the Macs CPU from sleeping (energy saver), spin down the HD was okay (but I never do that either). I think the sleep was unloading the drivers for the FTDI chip.
Eventually I stopped buying any Arduino that used FTDI chips for the USB interface. That solved it.
I suspect it has a lot to do with the fact those drivers are years out of date. Running old version drivers on the latest OS probably isn't the best way to ensure a trouble free connection.
I have one Arduino with FTDI that works just fine, but refuses to show up in the IDE. I program it via the ICSP header and an Omega MP programmer board.
On the one hand - Yeah! non-exact clones with reduced cost of materials!
On the other hand... People are getting boards that they can't get to work. Boo!
charliesixpack:
My Nano clone works with my mac running Yosemite 10.10.1. I am using HL-340 / CH-340 / CH-341 drivers from... https://www.mac-usb-serial.com/
The drivers cost a few bucks but they were signed. Fewer security concerns.
I find "signed by some random guy with a code signing certificate" having "fewer security concerns" than the official drivers direct from the chip manufacturer kind of amusing.
charliesixpack:
My Nano clone works with my mac running Yosemite 10.10.1. I am using HL-340 / CH-340 / CH-341 drivers from... https://www.mac-usb-serial.com/
The drivers cost a few bucks but they were signed. Fewer security concerns.
I would go for the manufacturers drivers which are free. They are also built into Linux.
Tried all solutions the forums including v2.3 Apple signed driver CH34x install.kg and nothing worked.
Tried charliesixpack solution and problem instantly fixed. Worth paying for the driver as I had wasted hours trying to get this to work. Running El Capitan 10.11.2 on iMac.
And if you dont want to pay here's a direct link to the drivers for free.... Click on me! and they are the only thing that got my clone arduino board working! So thank you for pointing a newbie in the right direction folks!
2. Run command line instruction in "Terminal"
sudo nvram boot-args="kext-dev-mode=1"
3. Restart
The Nano's then appear in the port menu as
"dev/tty.wchusbseiral1411310"
D
OMG i install it and my macbook restart restart and restart when i connect adruino uno to my macbook . It only run when i disconnect Uno . How i fix it . OMG
(other vendors may not be so forthcoming on which chip they use.)