FT231X Breakout not recognized

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1

Hello,

I am trying to use the FT231X Breakout to connect to the Arduino Pro Mini 3.3v using Mac OS Catalina 10.15.5. I followed the FTDI VCP driver installation guidelines on the ftdichip website, and have confirmed that the driver is loaded. However, when I plug the FT231X breakout into the USB port, no devices appear in the /dev folder (nor in the Port menu in Arduino IDE). I looked for a native Apple FTDI driver because I saw this sometimes has to be unloaded, but did not find one.

I also went through the same procedure on Windows 7 and Windows 10 computers, and the FT231X never shows up in the device manager when plugged in, even after installing appropriate FTDI VCP drivers. The only message I got was the Windows 10 machine periodically telling me that there was a device connected that could not be recognized.

I tried two different USB cable and a few different USB ports on each computer.

Can anyone provide advice on how to proceed?

Thank you!

2

Can you try restarting your Mac for due diligence?

3

Thanks for the reply. It is working now. There were two problems: the USB cable (I tried a few more and one finally made the device show up on Windows); on the Mac, I had disabled SIP in order to load the driver, but for whatever reason it would not work until I invalidated the kext cache and re-enabled SIP based on instructions here : https://stackoverflow.com/questions/508 … igh-sierra.

Hopefully this will help someone else trying to run this on Catalina

4

That’s a great tip, thanks for sharing!