Branch Education

Choose this when you want to see inside the electronics you use every day. Branch Education builds photorealistic 3D models of real hardware and flies the camera through them, so a smartphone, a solid-state drive or a graphics card is taken apart layer by layer until you can see where each signal travels. The channel was started by a former semiconductor engineer, and its videos on how microchips are manufactured are the standouts: few explanations make a factory process this hard to picture so easy to follow. People, not software, write the scripts and build the models, and the back catalog of more than 65 videos is free.