I have a new UNO R4 wifi board. Tried connecting it to the USB port on 2 different Win7 desktop PCs. Using IDE 2.1.1 When I plug in the USB cable Win7 device manager shows in "other devices" that it is a "TinyUSB CDC" with no driver installed. Same thing on both PCs. I can move the R4 wifi to a Win10 PC and it loads and runs just fine. Looks like it is missing a USB driver to properly run on Win7. Yes - I really do want it to run on the Win7 machine. What needs to be done to make it work?
Hi @slywuf. You can use a tool name "Zadig" to install the driver on Windows 7:
- Download the "Zadig" driver installation tool from this website:
http://zadig.akeo.ie/ - Connect the UNO R4 WiFi board to your computer with a USB cable.
- Start "Zadig".
- Select "TinyUSB CDC (Interface 1)" from the dropdown menu in the "Zadig" window.
If it doesn't show up on the menu, then select Options > List all devices from the Zadig menus and check again. - Click the up or down arrows next to the Driver selection box on the right side until you see "USB Serial (CDC)".
- Click the "Replace Driver" button.
- Wait for the driver replacement process to finish.
- Close the "Zadig" window.
After doing that, the serial port of the UNO R4 WiFi board should be recognized by Windows 7 correctly and you should now be able to upload sketches to the board.
I tried that Zadig a while back, but it installed a driver for a USB port not a serial port, so apparently the wrong driver was selected, but I did not know it at the time, so just wrote off Zadig. After that, I figured out how to modify the original driver to work on Win7, and it is working fine. Thanks for the additional detail for using Zadig - it will certainly be helpful for others running into this problem,
Yeah, Zadig offers multiple drivers and it is essential to select the "USB Serial (CDC)" specifically as the other options won't work for the UNO R4 WiFi board.
Nice! I'm glad you were able to get it working.
Regards, Per