I don't follow many channels, but I'm always impressed by this guy: https://www.youtube.com/user/Fredzislaw100 https://www.youtube.com/user/Fredzislaw100 He ha

I don't follow many channels, but I'm always impressed by this guy: https://www.youtube.com/user/Fredzislaw100 https://www.youtube.com/user/Fredzislaw100 He has lots of videos with circuits that seems impossible, but that are just full of hacks. He goes as far as putting circuits inside his components (leds, switches...).