basic expandable LED sequencer code

Is there / or does anyone have a basic expandable LED sequencer that doen't use delays?

I am quickly learning that I am not quickly learning :astonished:

I want to do so much at once...

I need a Non-Delayed 4 LED sequencer


O O O O O O O O etc into oblivion

See the “blink without delay” sketch. Search for other similar posts.