Continuing the discussion from DFU Error - Cannot Upload Sketch to R4 Minima:
Hi all,
I'm new here -just went through the solution to have Arduino R4 minima recognized in Windows 11.
I went through all, tried in two different PCs, but issue is that the the R4 is not detected on USB. I have installed R4 board in IDE 2.1.1 v1.0.2, but also tested 1.0.1 before -same results.
Any news or other tips to fix this and have the R4 recognized on USB?
THanks in advance!
Hi @megacheck33
Please try this troubleshooting procedure and then report your results in a reply on this forum thread:
This procedure is not intended to solve the problem. The purpose is to gather more information.
Did you see any new device appear in the Device Manager tree after doing this? If so, please tell us where it is located in the tree and what it is named.
You can repeat steps 5-8 multiple times if you are not sure.
Wow- thanks for your quick reply!
I noticed a issues with the plug of the cable and replaced it. Now I at least see the dvice appearing in the device manager - it is under "USB-Controller" - Unknown USB Device (Error when requesting the device description) " marked with a orange triangle on the USB plug symbol. (The description above is translated from my german windows version - so pls excuse if it is named slightly different in English windows) - I have repeated the procedures from above but the R4 minima is still not detected as a functional USB device. Any other tips? or stay with R3 for them oment until they fixed it stably? THx
Make sure the USB cable is completely plugged into both the Arduino board and the PC.
If that doesn't help, you may have a damaged/defective or charge-only USB cable. Try a different cable.
Either of the above can result in the power connections being made (and thus LEDs lit on the board), but unreliable data connections (and thus no port for the board).
Thanks. As said above, first cable was bad, but current cable is fine. Connection works, but it is not recognized as a functional USB device and the correct driver is not loaded. I have uninstalled the R4 drivers in the IDE and reinstalled it stepwise throught the version, and run the procedures from further above several times now. On one laptop, I reach the point stated above, on a second laptop not even this - simply no device is recognized. So I'd say this is still buggy with no functional install procedure and drivers for R4 on Windows. Hope something more reliable is launched soon. Like this, Uno R4 is unusable for me. Thanks for your help!
Have you tried the double click on the button, where the led should sort of pulse and then try to do upload? That has helped me in the past when the board was not recognized.
Also when in state like this I choose real simple program like blink.
Yes I tried this. But unfortunately the R4 board is not detected in the IDE 1.8 and 2.1.1, so no upload possible. We also need to have stable connection to have data on serial monitor while running the script.
Lucky you - is the R4 minima now stably connected and driver installed in your Windows setup?
Hi @megacheck33 - just to confirm, have you tried manually installing the DFU drivers (dpinst-amd64.exe) using a full Administrator account from the user directory:
C:....\AppData\Local\Arduino15\packages\arduino\hardware\renesas_uno\1.0.2\drivers\dpinst-amd64.exe
In my case it would always appear the drivers would install, but in actuality it would fail without any warning.
When I tried to install them manually, only then could I see the install error as my user profile did not have full Administrator privileges.
Only after running dpinst-amd64.exe as an unrestricted Administrator did everything start working.
Hi Profile - flynace - Arduino Forum, THanks fr your advice and tips. I have repeated the installation process on a 3rd PC now and have extensively taken care to explicitely selecct to run all as admin.
THe install is running and I get a Windows message that a driver for Arduino USB Device from 03/03/2020 in installed Version 10.46.00.000.
However, Windows rejects to use this driver and uses the USB drier from Mocrosoft 2006. The R4 Minima is always recognized as "Unknown USB Device" with error message " Error when requesting the USB-Device Device Descriptor." Changing driver using the Windows Driver update feature fails to detect a different driver. I have removed the devive, rebooted, and reinstalled, but same result. So without a correct detection of the R4 minima I'm stuck. And even having it running on my desktop hre does not solve to have it also running on the laptop I use with the project. Any other tips are welcome, maybe I missed something.
