Arduino NANO not recognized on Mac OS X El Capitan—how to get serial port working?

My ageing Mac (OS X El Capitan) refuses to have anything to do the Arduino NANO.The Mac works OK with the Arduino UNO and the Arduino MEGA ever since a contributor to the now defunct Practical Electronics on-line Chatzone showed me how to fix the Apple-Arduino incompatibility problem with this:https://blog.arduino.cc/2016/09/22/ide-1-6-12-released-with-sierra-support-and-more/The problem, which is "across the board", not just me,  arose in the first place when Apple changed the port arrangements with the introduction of the El Capitan OS in 2017.

Arduino > Tools  > Board > Boards Manager lets you select NANO but then refuses to assign you a port on which to run it on the Mac. Which is a pity as the NANO, fitting neatly on a breadboard which the UNO and the MEGA don't, can save a lot of precious space.Does anyone have a quick fix  - without disabling the Mac’s port security system, or buying a PC?

Michelle O’Brien

Michelle
I don't use Apple anything and have only just "acquired" a Nano, my first taste of the Arduino army, so I certainly cannot advise at present.
However I assume you "googled" all relevant search criteria and eliminated the many replies relating to El Capitalpunishment regarding such? From the brief look I took it appears that Nano clones from China seem to have a bit more success than the official ones. I didn't explore in depth though.

I'm traveling again soon and whilst that keeps me away from any proper fun, it doesn't stop me getting bored. I was planning on taking my acquired Nano and familiarising myself with that instead of sending the barstaff's children to Uni.... I expect access to a Mac at my destination but of course I have no idea the OS. If El Capitalcity and I get any success I will let you know, but I suspect other forum members will come to your rescue long before I.
Hope you resolve soon.
Regards

If you have to move away from your Mac, I suggest moving to a 64-bit Ubuntu Linux PC.
https://blackbricksoftware.com/bit-on-bytes/1...rted-with-an-arduino-nano-in-ubuntu-16-04-lts

You could try to programme the nano a different way by using the ISP interface. No boot loader required. Spark Fun have a Atmel ISP programmer Pocket AVR Programmer, look for their  target price about £13 - £14  Spark Fun Pocket AVR Programmer Hookup Guide,  This should give you another  possible other way of programming the chip and you can still use the Arduino IDE just tell it you are using a different programmer.

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