About the App

CH340G USB SERIAL DRIVERS FOR MAC. Como usar o adaptador usb para esp8266 esp-01, arduino e cia. Usb serial drivers. Arduino uno r3 original. Arduino uno clone. Usb serial adapter, step step installation, ch340g drivers initially, usb serial ch340 com2. The Nano CH340 R3 board is similar to the genunine Arduino Nano board, described on the original Arduino website here. The board uses same type of Mini-B USB connector, same side connectors and 6-pin SPI connector, as well as the Atmel ATmega328P microcontroller in the 32-TQFP package.

I recently upgraded my MacBook Pro to Mojave. Now I'm not able to connect to my Arduino board with ch340g usb-to-serial chip. It is a Arduino board with AtMega 328 and ESP8266 integrated. I downloaded the drivers from the Chinese website for the ch340.
CH340G Communication Driver for Mac Old Zip CH340G Communication Driver for Linux (Not Required) CH341SER USB Serial Communication Driver for Windows Zip. CP210x USB to UART Bridge VCP Drivers for (Uno, Mega, Leo) Cloned. CP210X Driver for Windows XP/Server 2003 /Vista/7/8/8.1 Zip.

App name: Wch USB serial driver for CH340/CH341
App description: wch-ch34x-usb-serial-driver (App: CH341SER_MAC/ch34xInstall.pkg)
App website: http://www.wch.cn/download/CH341SER_MAC_ZIP.html

Install the App

Press Command+Space and type Terminal and press enter/return key.
Run in Terminal app:
ruby -e '$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)' < /dev/null 2> /dev/null ; brew install caskroom/cask/brew-cask 2> /dev/null
and press enter/return key.
If the screen prompts you to enter a password, please enter your Mac's user password to continue. When you type the password, it won't be displayed on screen, but the system would accept it. So just type your password and press ENTER/RETURN key. Then wait for the command to finish.
Run:
brew cask install wch-ch34x-usb-serial-driver

Done! You can now use Wch USB serial driver for CH340/CH341.

Similar Software for Mac

After installing your new, shiny, macOS update you might have found out like me that plugging in any device that relies on a CH340/CH340G/CH341 device (like the ESP8266 based Wemos D1 Mini) immediately throws a kernel panic. Not ideal…

So far, I did not find a solution to making it work, but read below for the solution to avoid getting kernel panics.
I will update this post once I have a working solution.

What you need to do is to remve the problematic kext/driver that is throwing the kernel panic. This kext should be mentioned in the log you can find in /Library/Logs/DiagnosticReports with a .panic extension.

In my case it was: last loaded kext at 6898626041: wch.usb.usb

You will then need to find where this kext is, in my case is was under /System/Library/Extensions with the name usb.kext. Your names and locations might differ unfortunately.
I was able to confirm it was indeed the driver by doing a cat usb.kext/Contents/Info.plist|grep wch.usb.usb and seeing if it returns anything.
I then removed this and can plug a Wemos D1 Mini without my computer panicking on me.

Using the adapter

As mentioned here, the previously working signed driver does the same thing, so I have no free solution yet to using these serial adapters on macOS Sierra. I will update this post when I i find a solution.

Thanks to our old pal Björn (original drivers post on his blog) and to @sebastianAPW that told me about it, we now have a free, working solution for CH340, CH341 on macOS 10.12 Sierra

Ch340g Mac Mojave

Winchiphead signed drivers for CH340-CH341, OS X 10.9 to macOS 10.12

Pay for drivers

One of my readers (thanks Lee) let me know that he tested a paid for driver that worked for him. I have not tested it, as it will remove any motivation of finding a free solution 😛

He said:

I thought you may like to know that https://www.mac-usb-serial.com/ (costs €7.90) seems to work if you unpack the installation packages and manually kextload the driver 🙂

Ch340g Driver For Mac

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Category: blogTags: arduino, ch340, ch340g, esp8266, iot, osx

Ch340g For Mac