No Serial port with nano

[C.r.a.z.y.]

I was using my 4 original nano well. Today suddenly i lost serial port. There are only bluetooth ports.. Uno has no problem but my nano serial port is nowhere.

I followed this http://arduino.stackexchange.com/questions/5119/arduino-nano-no-serial-port-for-macbook-air-2013
but didn't work.

All my day passed with this problem:(

mac 10.10.1 Yosemite

[BulldogLowell]

have you tried putting it int another USB ready device like another laptop? Just to detect its presence...

I have fried a board or two never to talk serial again. Did you happen to bang some wires together?

Also,

I use a mac and often have to completely reboot my machine to get it to see the arduino... pull out the arduino before you reboot.

[hek]

My Mac has done this a couple of times when shorting or taking out too much power from the USB port. Guess it contains some kind of fuses (luckily).

I only had to restart my computer to get going again.

[axillent]

While UNO is working there is no any issue with MAC itself.
If I remembered correctly there are original FTDI drivers can be downloaded for MAC. I will recommend to install them http://www.ftdichip.com/Drivers/D2XX.htm

[C.r.a.z.y.]

Thank you all.

I tried to use vcc ang gnd for 5v servo with two nanos.
When i couldn't see serial port i opened a new one and followed this : http://sysexit.wordpress.com/2013/02/07/burning-a-bootloader-to-an-arduino-nano-using-another-arduino/
also http://www.instructables.com/id/How-To-Burn-a-Bootloader-to-Clone-Arduino-Nano-30/3/?lang=es

My new opened nano also died after bootload.
After this i tried with uno as programmer, it installed ISP and 2 of nano is blinking like new one but no serial.
Other 2 nano didn't burn;

avrdude: Device signature = 0xffff00
avrdude: Expected signature for ATmega328P is 1E 95 0F
Double check chip, or use -F to override this check.
avrdude: Send: Q [51] [20]
avrdude: Recv: . [14]
avrdude: Recv: . [10]
avrdude done. Thank you.
Error while burning boot loader.

4.nano was in vera. I don't remember how i loose it

Now i will go and get 2 more nano. I have to use one of it with vera. Also i will buy 2 raspberry b+ and cameras and a clone yün to try some intercom action.

I want to use other raspberry with openhab or pidome...