Hello - I have a UNO R4 and I can upload code in the Arduino IDE to the device using the USB interface.
If I move the unit to another computer the USB UART shows up as a CDC PORT under device manager and I cannot find any supporting USB driver (with the correct PID, VID) to provide a USB UART on that PC.
Is there any UART driver for this on Windows ?
thanks
cab
The second computer might have a driver issue. Try these below:
Do complete Uninstall Arduino IDE and then re-install the Arduino IDE (use Arduino IDE 2.2.1). Make sure that you install all the dependencies that shows up after the installation. If your machine is running Windows 11, check How to Fix Arduino Problem on Windows 11 and grant the IDE admin right.
Install your board's Package Core, it contains the board's driver.
Use a good quality data USB cable to connect the board to the computer without anything connected or wired to the board. Charging/bad USB cable will make it impossible for your computer to detect your board.
Make sure you select the board and the port it is connected to before uploading a sketch
Hello
I dont have the IDE installed on the secondary machine where the UART is identified as a CDC PORT. On the primary machine where I have the IDE installed all is good except some terminal apps will connect to the UART but will not communicate with the UART (so no matter what I send it does not get to the micro on the other side of the USB UART), this says there is something marginal with the USB UART.
thanks
cab