Problem with serial driver for CH340G board I bought a USB Nano V3.0 ATmega328 16M 5V Micro-controller CH340G board For Arduino and tried it with Arduino 1.6.6 on my MacBook Pro running OS X 10.11.1

The USB serial could not be seen. I searched on the web and found a few posts about this board, and downloaded http://www.wch.cn/download/CH341SER_MAC_ZIP.html

Most of the instructions were in Chinese, but the driver CH341SER_MAC.ZIP 资料类型：应用资料 资料大小：250KB 资料版本：1.1 更新时间：2013-12-25 seemed to install, but I cannot seem to find any /dev/tty and Arduino can't see any serial ports.

Has anyone had any success with this. (The seller has sold 18000 of these so someone may have got it working.)
Using different search criteria I found http://kiguino.moos.io/2014/12/31/how-to-use-arduino-nano-mini-pro-with-CH340G-on-mac-osx-yosemite.html

This indicated a newer driver for OSX 10.9 and above at:-
http://kiguino.moos.io/downloads/CH34x_Install.zip

It is now working OK.

PS This was probably a Mac question, but I will answer as it is mainly of interest to Arduino users.

PPS The board worked on my Raspberry Pi which had the driver installed.

WARNING

The driver worked on OS X 10.11 but after upgrading to OS X 10.11.2 when I plug the USB cable into the Mac it causes a crash. This may or may not be related to the upgrade but after this happened twice I gave up.