hello i made that project mainly to understand Nipkow Disks.

mainly Nipkow disk is circular disk where is holes like you can see in schematics

if that  rotates then that creates picture like CRT display area scanned to point to point only big different are CRT are horizontal scanned then Nipkow disks scan vertically.Because any hole draw one vertical line hole number The number of holes can be found by taking into account the number of parts in the circle

vertical pixels lines length can change chaining how many led plinks  one hole period. Im not sure if this is true without the assumption  screen to be square and main disk are least 10 times bigger to screen.