That said, I have abused the hell out of CHG’s and have yet to break one. I’m pretty sure those el-cheapo clones that cost less than a cup of coffee aren’t tested before the sellers throw them into bags without static protection, slap on an false customs declaration and drop them in the mail You will have to type the entire thing yourself: It may not be the answer you were looking for but its the one I am giving based on either experience, educated guess, google or the fact that you gave nothing to go with in the first place so I used my wonky crystal ball. Also it is always best under win 10 to install drivers with “driver enforcement” turned off and with FULL Administrative privileges. CH driver then works. We are waiting on the developer to update the driver so that these pre-installation steps are no longer needed.

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You will have to type the entire thing yourself: Please leave a comment, if it worked or didn’t work for you, especially if you had to do anything special or hacky to make it work: That should not normally be needed but has in the past fixed drivers issues.

I love a quick fix but proper one. The solution was as suggested by ballscrewbob – thank you disable driver signature enforcement.

CH340 Windows Driver Download and Installation Guide

Go are waiting on the developer to update the driver so that these pre-installation steps are no longer needed. The latest driver appears to be signed, and should work out the box.


Koepel on Apr 29, Koepel Faraday Member Posts: Use fricking code tags!!!! However, if you are using the Eclipse Plugin, c341ser is not smart enough to list this port in the list of available serial ports either in project properties, or in the serial monitor. They are two drivers for two different usb products. My ports are USB 3. Reinstalling FTDI is not needed. Thanks to this post for these instructions.

I know this has probably been asked times but I am losing hope. NEW Library to make fading leds a piece of cake https: Below you’ll find links to drivers for both Windows and Mac to make these work.

Step by Step Installation guide for CHg USB to serial IC along with its drivers

Updated Cch341ser, with the latest driver for OS-X High Sierra Updated Oct, with the new signed driver for OS-X Sierra Updated Nov 22, with the new signed driver for OS-X El Capitan and Yosemite Updated Jan 9, with Windows Drivers My golden rule is that if something took me longer than 15 minutes to figure out, then it’s worth documenting in a tiny blog post so that it would save time to others, just like many other similar posts saved me ch341serr hours by providing simple clear instructions.

OK, Ive tried tried everything suggested here and everywhere else. If you’ve only checked with one device, it could very well be a bad device, ch341wer it’s not known working on other systems. Looks like the updated version from their site works now as is.


I am leaving instructions just in case someone needs it, or the new driver does not work for someone. ZIP KB cached locally, but for other platforms, please checkout their website.

It is because the driver is not signed properly from Apple’s perspective. Asterion on Aug 01, Many instructions down below were written for the old driver, which was not signed, and therefore was not working out of the box on OS-X Yosemite and Uab Capitan.

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The new driver is here: This is the official one: Windows 10 and CH Bathroom Occupancy Remote Awareness Tech Introduction — What is CHG? Just adding my 4 penny worth – My Uno cheap ver works with win 7 and not win 10 I’ve done all the things suggested and sitll no luck. My Uno now works on my win 10 pc.

It is possible that something is wrong in the settings of Windows 10 ow with the disk. Try to answer Faraday Member Posts: DrAzzy on Apr 29,