Hi all, I tryed with some of this USB micro breakout board but the Uno doesn't open a USB port on my Linux PC. Whati is wrong? Green wire (Data+) on D+ adapter pin. Thanks
Shouldn't the ID pin on the breakout be connected to ground? Or does that only matter for USB OTG?
Tested with ID pin to GND but no success...
Anything from dmesg when you plug the cable into your PC?
Is it possible that you've got D+ and D- backwards?
Have you successfully connected some other device using just your black (micro) usb cable?
Some cables are power-only, missing data wires…
According to the photo, your Uno is not original, but a clone. I see it has a CH340 chip as a USB-UART bridge. To work with this board you need CH340/341 driver to be installed in the system.
https://learn.sparkfun.com/tutorials/how-to-install-ch340-drivers/linux
gigi@T9plus> sudo make
make -C /lib/modules/6.2.0-36-generic/build M=/home/gigi/Apps/CH341SER
make[1]: Entering directory '/usr/src/linux-headers-6.2.0-36-generic'
warning: the compiler differs from the one used to build the kernel
The kernel was built by: x86_64-linux-gnu-gcc-11 (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
You are using: gcc-11 (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
make[1]: Leaving directory '/usr/src/linux-headers-6.2.0-36-generic'
gigi@T9plus> sudo make load
modprobe usbserial
insmod ch34x.ko
Not shure has been compiled or not ...
I'm on Linux Mint 21.2 Victoria
Anyway, the same clone board is correctly recognized and works just fine if I plug the USB type-B directly to the board, so the issue I suppose is in the 'bridge' shown in the photo. I tested with another micro USB breakout and different USB type-B cables but without success. Tested the same way with an original Arduino UNO
EDIT:
checked the continuity of the pins, all ok:
Hi,
Any reason you have to configure a USB cable connection to your UNO like that?
Tom... 
Well just compile it, but don't upload.
See if the IDE gives you any errors.
Tom..
My conclusion is that your USB-A to mini cable is no good.
I'm making an Arduino-CNC shield controller and 3D printed connectors panel for the case so I want to have also the Arduino USB connector on this panel.
Yes, the problem was a faulty USB-A to micro cable ... Sorry for wasted your time ...
LOL, no problem.
It always the thing that couldn't possibly be bad.
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