The CH340 chip is used by a number of Arduino compatible boards to provide USB connectivity, you may need to install a driver, don’t panic, it’s easier than falling off a log, and much less painful.
Windows 10 drivers. Windows 10 operating system was supposed to become the universal OS for PCs, smartphones, tablets and even for Xbox One game console. It was released after Windows 8.1, and it belongs to NT family. Windows 10 Compatibility If you upgrade from Windows 7 or Windows 8.1 to Windows 10, some features of the installed drivers and software may not work correctly.
Windows
(Manufacturer’s Chinese Info Link)
- Download the Windows CH340 Driver
- Unzip the file
- Run the installer which you unzipped
- In the Arduino IDE when the CH340 is connected you will see a COM Port in the Tools > Serial Port menu, the COM number for your device may vary depending on your system.
Older Windows Driver Version and Instructions
Download the Windows CH340 DriverUnzip the folder.If you are running a 64Bit Windows: – run the SETUP_64.EXE installer.If you are running a 32Bit Windows: – run the SETUP_32.EXE installer.If you don’t know, try the 64 bit and if it doesn’t work, the 32 bit.In the Arduino IDE when the CH340 is connected you will see a COM Port in the Tools > Serial Port menu, the COM number for your device may vary depending on your system.
Macintosh
(Manufacturer’s Chinese Info Link)
The following github has up to day pkg files for 1.3, 1.4 and 1.5 at time of writing, thanks to Joshua Wallis for bringing this to my attention…
Direct Download Links (from the github repo above):
See the github link above for installation instructions if you need them.
Previous macinstosh downloads if the above doesn’t work for you…
(V1.3) Download the CH340 Macintosh Signed Driver for Mavericks (10.9), Yosemite (10.10) and El Capitan (10.11) and Sierra (10.12)
Inside the zip file you will find a PDF and a “pkg” file, short version, double click the pkg file, the PDF has some extra information.
OSX Sierra (10.12) Note
A kindly user, Maarten Segers reports
FYI, the driver documented here WILL crash on OSX Sierra.
I can personally not test on MacOS and can not vouch for the above drivers at github, but there you go.
See uninstalling information at the bottom of the page if the driver causes problems for you.
Here is an older version of the Mac driver, NOT FOR 10.12 Sierra
(V1.0) Download the CH340 Macintosh Signed Driver for Mavericks (10.9), Yosemite (10.10) and El Capitan (10.11)
Linux
(Manufacturer’s Chinese Info Link)
Drivers are almost certainly built into your Linux kernel already and it will probably just work as soon as you plug it in. If not you can download the Linux CH340 Driver (but I’d recommend just upgrading your Linux install so that you get the “built in” one).
Uninstalling From Macinstosh
A couple of Mac users have said “the driver crashes my mac Sierra how do I uninstall”.
Firstly regards the crash make sure you installed the 1.3 version of the driver, not the old one. You could download it directly from the Manufacturers Website in case they have issued an update since I wrote this page.
Secondly a quick google search reveals that this is how you uninstall:
- Open a terminal and type:
cd /Library/Extensions/ - Verify that the .kext file is present:
ls | grep usbserial.kext - Output should be:
usbserial.kext - Then type:
sudo rm -R usbserial.kext - Verify that the .kext file has been removed:
ls | grep usbserial.kext - Output should be empty.
- After you should remove the files stored in receipts folder:
cd /private/var/db/receipts/ - Find the enties:
ls | grep usbserial* - Output should be:
codebender.cc.ch34xinstaller.usbserial.pkg.bom codebender.cc.ch34xinstaller.usbserial.pkg.plist - Remove each one of the files of the above list:
sudo rm -rfilename`
I have looked for a while now. I have found a download page here:
The latest date on anything I can find here is from 2015.
Another page directs me to use the boot camp assistant, but it requires that I have a thumb drive (ready to be reformatted), and I must reboot into MacOS I'm not going to do that. In anticipation to some responses, we can argue about it if you want but it'll be a waste of energy.
Many other situations would involve going to a web page and downloading an installer so I'm asking here for what I'm missing.
Thank you for responses that stick to the point and answer the question.
I felt like showing a bit more of the process:
1) 'install Windows on a Mac with Boot Camp Assistant' https://support.apple.com/en-us/HT201468
Ok this looks useful but the process is written for a fresh format and install of Windows.
Here's a link for:
2) 'If the Boot Camp Installer Doesn't Open...' https://support.apple.com/en-us/HT208495
Ok that's cool now I know I'm looking for some 'Boot Camp Installer' that needs to run on my Windows side
3) But of course there's no link to a 'Boot Camp Installer' I needed to use the Assistant from the MacOS side and the thumb drive.
Windows 10 Software Download For Mac
4) Wait wait, here's a section called 'If you can't download or save the Windows support software:'
Oh, but this section just troubleshoots problems you have with formatting your USB drive and with USB drive recommendations.
Download Windows 10 Drivers For Macbook Air
I don't know why it's like this. Any other system would just have an installer and even an update agent for download. Is apple protecting IP and software licenses. Possible. Are they keeping users from downloading the wrong versions of stuff? Possible but there are other ways to do that.
They made a choice to handhold users through disk formatting instead of just having a download.
MacBook Pro 13', macOS 10.14
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