SnowDog1942
Navezgane's Perv
Seems odd where people are drawing their lines to me.I'd have difficulty fabricating solar panels without the correct facilities and the ability for a turret to identify friend from foe is beyond even DARPA just yet but yes, I could build that equipment, the rest of the technical gubbins requires nothing more advanced in the way of electronics than a raspberry pi.
Never underestimate the ingenuity of an engineer.
https://www.dailymail.co.uk/news/article-2168061/French-electrician-stranded-Moroccan-desert-rebuilt-wrecked-car-motorbike-drove-civilisation.html
A fully functional auto turret built by one guy, with friend/ foe tracking is totally okay.
However, a fully functional auto turret built by one guy, with friend / foe tracking that has wheels and can follow you is totally sci-fi?