Dear All,
I've a Windows 8.1 PC and I've installed the IDE 2.1.1 (the latest compatible with Windows 8.1).
I'm trying to connect my New Arduino UNO R4 Board with an USB type C cable but no ports are available (Board is correctly powered and default sketch is running, I can see an Heart on led wall green ND LED on and a tiny L Led yellow blinking).
I've changed also USB Cable without success.
Looking at device list I can see an error on TinyUSB CDC.
I suppose that is the driver able to communicate with the board but I'm not able to find any suitable driver.
Install your Arduino 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.
If #1-4 above fails to solve it, double tap the reset button fast and check the status of the onboard "L" LED. If the onboard LED fade in and out slowly (pulsating), upload an example sketch (Blink LED) from the IDE to the board. This will Reset your board
Note: Mention the particular UNO R4 board you have, it is important.
Dear Dozie,
thanks for your interest, below my comments to your suggestions:
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.
[salmec 04/01/2024]: I cannot install IDE 2.2.1 I'm running on a windows 8.1 PC and latest vesion IDE minimun requirement is Windows 10 or above. IDE 2.1.1 is the latest compatible with Windows 8.1.
Install your Arduino board's Package Core, it contains the board's driver.
[salmec 04/01/2024]: On board manager is already installed Arduino UNO R4 Board by Arduino Version 1.0.5 (latest available).
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.
[salmec 04/01/2024]: I've changed Three different USB type C cable, all are very good quality.
Make sure you select the board and the port it is connected to before uploading a sketch.
[salmec 04/01/2024]: On IDE menu I cannot select any port, it is light gray and not selectable.
If #1-4 above fails to solve it, double tap the reset button fast and check the status of the onboard "L" LED. If the onboard LED fade in and out slowly (pulsating), upload an example sketch (Blink LED) from the IDE to the board. This will [Reset your board]
[salmec 04/01/2024]: The connected board is original, new, never used, just opened from package. I cannot upload anything because I cannot select a port...
May I bypass the problem using arduino Cloud?
Does anyone have idea where to find TinyUSB CDC driver?
SOLVED!!!
I've installed a little application: Zadig
Running this application while the board is connected is possible to install USB Serial (CDC) driver for the board.
Now the board is connected the port is recognized and I was able to upload a sketch.
(please note that Board shall be connected on USB 3.0 (blue one) USB port).
Thanks Dozie and everybody for your interest and time.
Hello salmec - I have the same problem, but using a Win7 PC. The R4 wifi was not recognized properly in the device manager - showed up as TinyUSB CDC. I used the Zadig tool to install their driver. The R4 wifi now shows up in Device manager under USB ports; not as a serial port. When I connect an older UNO board, it shows up running on Com 3. IDE 2.1.1 does not recognize the R4 when connected. The only com port showing up in IDE is the default com 1, which will not connect to the R4. Any ideas on how to get the R4 to show up as a com port? When you plug your R4 into your PC does windows recognize it and load it on a com port? Thanks.
Dear slywuf,
sorry I cannot do what you are asking for...
I've decided to upgrade my system to win 10, and now Arduino uno R4 is recognize as a COM port.
Zadig offers multiple drivers. You might have installed the wrong one. You must select "USB Serial (CDC)" from the driver selection menu in the Zadig window, then click the "Install Driver" button.
Apparently the wrong Zadig driver was selected because it installed a USB driver. I have since modified the original driver to work for Win7 - so all is working well now.