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I've built something like this using the ESP32-CAM if you want lower power usage. Although the real power usage is in the motors anyway.

It's awesome when it finally works and you can drive it around at a distance though!

Yeah, Arduino, Teensy, ESP32… I prefer these options when you don't in fact need an OS.

Less OS means less to go wrong. (Just waiting for a Pi to boot vs. a Teensy is reason enough to go with the more stripped-down hardware.)

I agree, it definitely felt a bit spoiled using a full computer for a toy like this, but the main goal for me was learning something new.

No, that's cool. I didn't mean to come across as critical.