CH340 serial chip Drivers for Linux, Mac, and Windows all in one place

A One-Stop driver repo for the popular serial chip used on cheap Chinese Arduino clones.

The CH340G chip is a very popular USB to Serial chip used in Arduino clones because of its low cost. The OEM of this chip is Jiangsu Qinheng Co., Ltd. in the Nanjing Software Valley of China according to SparkFun who builds products that incorporate it.

Unfortunately, their website, being entirely in Chinese, makes many people nervous. For this reason, there have been many people who have tried to be helpful by hosting a copy of the drivers on a more inviting site. However, that is a dangerous thing to be comfortable with. As a Maker Space that regularly teaches microprocessor hacking to beginners, Decatur Makers has decided to host yet another copy of these drivers. You may or may not trust us as a source, but we didn't feel safe sending our students elsewhere. We have done (and continue to do) everything in our power to verify and maintain the content of this repo.

Installation

Linux

The driver for this chip has been in the Linux Kernel for a long time. (Introduced in commit 6ce76104 that was released in Linux Kernel v2.6.24 Jan 24 2008) If your Kernel does not support this chip, you are probably very out of date and have severe vulnerabilities to worry about.

Even though Linux users should never need this, we're going to put the information here.

1. Download the zip of this repo and unzip it

2. Change into the directory that was created

   cd CH340_drivers-Linux-Mac-Windows/drivers/linux/
   

3. Compile the kernel module

   make
   

4. Load the kernel module

   make load
   

5. If you need to unload the kernel module

   make unload
   

• Source:
  • http://www.wch.cn/download/CH341SER_LINUX_ZIP.html
• SHA256 Checksums:
  • 5ba92d25345872b3aa72321b8b3bff0067b318a7b630087abb4b762e18df9624 ch34x.c
  • a47d44ae25907741a6f4a9b4e5fefd4f522f91159fe418de125b6eee05200681 CH341SER_LINUX.ZIP

Mac

Warning: Installation for macOS is [now] very simple. The internet is littered with links to unsigned drivers and out of date instructions telling you how to [recklessly] disable macOS security features that are in place to protect you from these kinds of things. Do not follow them! (If you have done this in the past, undo it.)

Recommended Install: via Homebrew

I really suggest you install using homebrew. If you do not have brew installed, you should install it. It is the most common way to install things on a Mac that don't come from Apple's App Store.

1. Open the Terminal (use Spotlight to find it if you must)

2. If you do not have homebrew, install it.

   /usr/bin/ruby -e "$(curl -fsSL https://github.com/Homebrew/install/raw/master/install)"
   

3. Install the driver. (You will be prompted for the password you use to log in to the Mac.)

   brew tap DecaturMakers/CH340_drivers-Linux-Mac-Windows https://github.com/DecaturMakers/CH340_drivers-Linux-Mac-Windows
   brew cask install wch-ch34x-usb-serial-driver
   

Alternate Install:

1. Download the zip of this repo and unzip it
2. In Finder, navigate to CH340_drivers-Linux-Mac-Windows-master/drivers/macos
3. Open the file CH34x_Install_V1.4.pkg
4. Follow the instructions in the installer

• Source:
  • http://www.wch.cn/download/CH341SER_MAC_ZIP.html
• SHA256 Checksums:
  • 032e85afc2dfeaba6e77637718749e3af381892305c2c02c12d1cd2bb3585bc3 CH34x_Install_V1.4.pkg
  • b190f612b833727b2006f362a835f7e97177b580e45cef253e164202106c48eb CH341SER_MAC.ZIP

Windows

1. Download the zip of this repo and unzip it
2. In Windows Explorer, navigate to CH340_drivers-Linux-Mac-Windows-master/drivers/windows
3. Run either the 64bit or 32bit SETUP application

• Source:
  • http://www.wch.cn/download/CH341SER_ZIP.html
• SHA256 Checksums:
  • 543426ce41c8d5fa42aaa9885f8cd6c1132245a9552ee0e842b2993bae6ed224 CH341SER.ZIP

References

• https://kig.re/2014/12/31/how-to-use-arduino-nano-mini-pro-with-CH340G-on-mac-osx-yosemite.html
• https://forum.arduino.cc/index.php?topic=397368.0
• https://github.com/adrianmihalko/ch340g-ch34g-ch34x-mac-os-x-driver