[SOLVED] nice nano v2 bluetooth issue

[amber skiff]

I installed a firmware on a nice nano v2 and the bluetooth doesn't work, but it works over USB. I then tried the same build on another nice nano v2 and it works.

I don't know how to investigate this. I keep finding posts about the crystal, but I didn't change it, and this nice nano is new and hasn't been plugged in any other project before.
The only thing I can think of is that I installed kmk first to test the ble, but couldn't make it work because of issues with the libraries.

I tried the reset firmware as well as this https://nicekeyboards.com/docs/nice-nano/troubleshooting/#my-nicenano-seems-to-be-acting-up-and-i-want-to-re-flash-the-bootloader

Can anybody help me or direct me to resources to troubleshoot this issue?
What in the hardware could provoke this issue? Would there be a workaround?

[modest fiber]

Did you try the erase flash firmware?

From https://github.com/joric/nrfmicro/wiki/Bootloader#nrf52840

[amber skiff]

I'll try it, is it the same as this? Because I flashed a reset settings firmware already
https://zmk.dev/docs/troubleshooting#split-keyboard-halves-unable-to-pair

That said, I don't even see the device in my Bluetooth devices list

[modest fiber]

That's not the same, it erases the whole flash rather than just where Zephyr think ble bond information is stored

[amber skiff]

Oh ok, great, I'll try that tonight then, and report back

[amber skiff]

oh, wow! thank you! this fixed it, the zmk_clear.uf2 thank you again, that saves me from having to redo the pins on the second nice nano that worked

[modest fiber]

Np, the giveaway was the KMK flash

It seems to mess with the flash partition in such a way that Zephyr settings subsystem can't handle properly

I wonder what's different in the new one

[amber skiff]

I was hoping it was something like that, and not hardware

in the new kmk or zephyr?

[modest fiber]

The new uf2 😄

@broken jay hope you don't mind the ping, what's the difference between erase_flash.uf2 and zmk_clear.uf2?

It was just updated today

[amber skiff]

it's a special halloween, it gets rid of the ghosts in it

if I "close the post" does it still let us talk, just it marks it as solved/closed in some way?

[SOLVED] nice nano v2 bluetooth issue

[modest fiber]

No idea, never opened a post before 😬

Did you close it?

[amber skiff]

yeah, it seems to reopen when I write in it

[broken jay]

I was told the old one doesn't work with current ZMK

[modest fiber]

I was wondering what you did differently to generate the new one

[broken jay]

I didn't it's someone else's i thought it's rather clear it's just a new version of ZMK compared to the obsolete one.

[modest fiber]

I thought the old one was an Arduino thing or something to just clear flash, must be remembering wrong

[broken jay]

nah it's all ZMK related nothing else

[modest fiber]

ZMK doesn’t have a “clear flash” functionality anyway, just clear bonds (which is settings reset)

[robust lotus]

Hello, I am having this same issue. (I already tried the ZMK_Clear.uf2 I handwired a num pad, made a custom shield , and board and flashed it. The numpad works as expected and I can get to my bt layer but the bt functions do nothing and I cant see my nicenano in ble list.

Since I made my own sheild and board was I supposed to enable BLE in a config file or something?