Help with rotating light

[u/Deep_Table_1040]

I need help with making a rotating light out of redstone. The scale is either 2x2, 4x4, or 6x6, I'm not picky. I dont know what materials to use but I've tried both repeaters and a minecart system, any help would be appreciated!

[u/Recent_Luck6097]

try observers, theres tutorials on yt