user134450

I mean sure but on the other hand the Ukrainians have modern radar so this is a bit surprising still.

I think it went a bit further than just selecting the right paint.

I remember there was a program to enhance the stealth for relatively low flying surveillance aircraft (still mostly propeller aircraft at that time) and one of the most effective measures was painting the underside of the plane White and then illuminating it on purpose with a light that was matched to the sky. The light was usually bluish to match the sky. https://en.wikipedia.org/wiki/Yehudi_lights

The reason why this was not simply done at night was of course that the surveillance equipment needed some light to work :)

Mammatus

instead of putting a grub config in /boot/grub you could also try embedding it directly with grub-mkimage. you would need to point to the grub config that you have with -c and add all the needed modules as extra arguments at the end.

it is possible that the grub image you installed is just not looking for the config file at the right place.

or maybe try putting the grub.cfg in the same directory as the grubx64.efi

skipped reading the silkscreen … it says Q1 on the lowermost package but the other three are diodes. so could also be a forward converter or something similar.

no i was just adding that to explain that grub needs special steps to work with secure boot enabled. if secure boot is off you can ignore that part.

i searched for the exact phrase used "robot which uses plasma torches" and found a few news articles for a start-up that uses such a concept in commercial tunnel drilling.

so i guess we do have tunneling robots that use plasma torches.

is secure boot enabled in the firmware? ~~It is possible that you have a signed grub binary installed but the module signing is not yet rolled out.~~ Edit: my mistake: if you are using grub with shim then all the necessary modules need to be baked into the grub binary. maybe grub was not installed correctly?

indeed it looks like a Royer oscillator in there (because there are transistors before AND after the transformer).

i did not see any text that mentioned the guided variant but i saw a video that showed supposedly a UA gunner in a PzH2000 with a programming adapter on a shell like they are used with Vulcano ammo. (looks like a round copper ziggurat)

Edit: just read the description of those shells by the manufacturer and i i think i misunderstood programmable shell to mean guided shell. the programming could also be for setting the fuse.

They have guided Vulcano ammo in that caliber too.

click on the link pls