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.
Open Start Settings Devices Printers & scanners. Select the name of the printer, and then choose Remove device. To reinstall the printer, select Add a printer or scanner and then select the name of the printer you want to add. If Windows doesn’t automatically find a new driver after the printer is added, look for one on the device.
PC Pitstop - PC Performance Roots. PC Pitstop began in 1999 with an emphasis on computer diagnostics and maintenance. During the early days of the dot com boom, our online PC maintenance tools were skyrocketing. Scroll down to the LPT/ COM port then double click Prolific USB to Serial Comm Port Click Driver in the Windows Properties section The driver must be numbered as '2.0.2.8' and dates accordingly If the driver was not installed, remove the Serial adapter then run 'PL2303DriverInstaller.exe' again. Update Your System Drivers. Although Windows 10 should have the USB 3.0 drivers you need to use your compatible devices, it may be some other drivers are too out of date to work properly. To update them, you need to know the name and model of your system or device. If you want to be specific, know the motherboard make and model, too. This will enable your computer to communicate with audio devices such as speakers and sound cards. It is important to have a 64-bit version of a Windows operating system installed in your computer before downloading Realtek HD Audio Drivers x64. It can either be Windows Vista, Windows 7, Windows 8, or Windows 10.
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 -r
filename
`
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WO Mic can turn your phone to be a microphone for your computer. You need not to pay a cent to buy any gadget. And it's mobile if you choose wireless transport. Millions of people have installed it and are using it daily for talking, recording, voice remote control and many other activities.
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- WO Mic Client which runs on computer. It connects to app, receives voice data and passes them to virtual mic device.
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Below diagram shows how captured voice data is flowing through these components:
Main features:
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You need to install all 3 WO Mic components mentioned above. Note below sections assume Windows operating system on PC. If you are running Linux, refer to Linux setup.
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Download and run the setup program to install the client.
File | Size | Version |
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WO Mic client for Windows | 1,151,945 bytes | 4.7 |
2.3 Install device driver on PC
WO Mic device drivers are available for Win7/8/10. Supported processors are x86 and x64.
File | Size | Version |
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WO Mic device driver for Windows | 242,645 bytes | 1.6.0.0 |
Once the driver is installed successfully, WO Mic device will be created automatically. Follow these steps to check if the device exists and is working properly:
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- In Device Manager, go to Sound, video and game controllers.
- WO Mic device should be listed and work well as shown in below diagram.
3. User guide
3.1 Choose transport
Depending on system, different transports may be selected as the communication channel between your phone and computer:- iPhone: Wi-Fi
- Android: USB, Bluetooth, Wi-Fi and Wi-Fi Direct
3.1.1 USB transport
We recommend USB transport whenever possible, as it is more robust than wireless connections. It also has lower latency and higher bit rate. To use USB connection, follow these:- Connect your phone and PC via an USB cable.
- Enable USB debugging on Android phone.
- On PC, install right USB driver for your phone. You may consult your vendor for that.
- Press Windows + X and click Device Manager in the pop menu.
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- In the list, you are expected to find something like ADB Interface.
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Launch WO Mic on phone. Before staring the server, you can go to Settings to configure what you prefer.
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3.2.2 Control port option
This port number should be same as in client; otherwise, connection will fail. If no special reasons, don't change it.Note media port can only be configured in client. It shall be synced to server when making connection.
3.2.3 Audio source option
There are 5 mic modes. Due to different Android phone hardware and OEM customization, not all modes may be supported on your phone. Even some are supported, they may not have same effect as described here. So please take below mode description as a hint and explore each mode on your phone to select appropriate one.
- Default. Phone embedded microphone.
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Especially, if WO Mic used to work well and stops working suddenly, it's mostly caused by anti-virus software blocking. Some quick verifications:
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Contact
Before reporting any issues to us, you are encouraged to check this FAQ page for any known issues and their solutions.
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You can contact us at support@wolicheng.com.