Feather nrf52840: Unknown USB Device

Please tell us which board you are using.
For CircuitPython issues, ask in the Adafruit CircuitPython forum.

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
User avatar
melanieneuro
 
Posts: 1
Joined: Wed Jul 10, 2019 11:44 am

Feather nrf52840: Unknown USB Device

Post by melanieneuro »

Hi,

I recently purchased two feather nrf52840 boards through digikey (purchased June 25) and for seemingly no reason they are connecting sporadically, and as of this morning one is no longer recognized by my PC. Up until this morning everything was working as expected, except that after flashing a new sketch the board would occasionally stop being recognized. Now the computer no longer sees the board as a COM device and instead lists it as an "Unknown USB device." I have tried...different cables, different USB ports, resetting the board with the reset button, re-installing the Arduino IDE/drivers, rebooting my computer and no luck. A different, previously purchased feather nrf52832 still works fine, so I don't think it's a problem with my computer.

What should my next steps be?

Thanks so much,

Melanie

User avatar
adafruit_support_carter
 
Posts: 29168
Joined: Tue Nov 29, 2016 2:45 pm

Re: Feather nrf52840: Unknown USB Device

Post by adafruit_support_carter »

Sorry for delayed response. It sounds like they were working originally and then:
Up until this morning everything was working as expected
What was the last sketch you uploaded?

Locked
Please be positive and constructive with your questions and comments.

Return to “Feather - Adafruit's lightweight platform”