After rummaging through the awful and extremely limited documentation relating to external programming using the NRF52840 DK (so I don't have to pay for the $700 scam device), I setup my device as best as I could understand the SDK documentation.
However, after trying to flash an Adafruit ItsyBitsy NRF52840 via NRF52840 DK, my NRF52840 DK will no longer turn on, and no longer functions in any other capacity.
When I power on the device (via power switch, or via USB), the LED(5) flashes very briefly, once, (sometimes dim, sometimes normal) and then nothing...
The device does not show up in NRF Connect for Desktop, VS Code, Device Manager, or Devices and Printers.
1. All the power switches are the in the right position
2. I have tried different USB cables
3. I have tried using alternative power methods (battery and external supply)
4. I measured the voltage from VDD to GND and got 3V, and from 5V to GND and got 5V, this was connected via USB.
5. I tried my USB cables on other devices, including other Nordic devices, and had no issues.
There is one thing I may have done wrong, but I'm not even sure since there is no official wiring diagram for it, but at some point, for about 20 seconds, I mistakenly had VDD nRF and VTG connected to a 3.3V power supply. But I cannot be sure that that caused the issue, since there was some time and testing between that event, and the device not turning on.
I own 3 an NRF52840 DK, NRF52840 MDK Dongle and NRF52840 ItsyBitsy, and now I can't flash any of them...
