Join 50 other subscribers Latests posts by Lars The test app has detected my Geekworm ESP-32 via the CH341 chip Testing the new driverĪfter installing the driver on my Mac, my set of problematic dev boards works fine! Arduino IDE and Platform IO detects the boards and I can finally start using them for some experiments. NOTE: this driver is only compatible with MacOS 10.15 (Catalina) and older. They also provide a free test app so that you can try to see if the driver will work with your devices before you do the actual purchase. The driver costs $8 but I found it well worth the money as mac-usb-serial’s troubleshooting guide and support pages are very professional and useful. While searching for a solution for my driver problem, I found several links to free downloads of signed and alternative drivers for CH340/CH341, but I finally decided to buy a driver from. To remove it I used: sudo rm -rf /Library/Extensions/usbserial.kextĪfter this, my Mac would not crash anymore, but of course I could still not access the boards over USB as I had no driver installed. If you have installed the original driver ( ) that causes a kernel panic on OSX Sierra, you can view the diagnostics log on the Mac to pin-point what driver is causing the problem. I have a couple of boards with this USB chip that I could not get to work with my Mac: Clockwise: Open-Smart UNO (with 3V/5V switch), Geekworm ESP32, NodeMCU 0.9 ESP8266 Close-up of the CH341 chip Removing the old drivers The CH340/341 chip is a an inexpensive usb-to-serial solution that can be found on many Chinese Arduino-clones and ESP-devboards. It is only compatible with MacOS 10.15 (Catalina) and older. NOTE: the suggested driver was a solution for Mac OS Sierra. I’ve found an alternative driver ($8) that was really worth the money.
The reason is that the drivers are not signed correctly. Unfortunately, with OSX Sierra, the official CH340 driver cause a Kernel Panic (freeze + reboot) of the Mac when a device is connected. I have several low-cost development boards that use the CH340/CH341 usb-to-serial chip for usb communication.
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