Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
A timer. 07/24/2022 Fix thanks to Hares
In the picture:
Bottom Left Decider = (# of seconds you want) x 60 = C
Right Combinator (for resetting) = (C/3) x -1
The blueprint example is 40 seconds:
Bottom Left Decider = (# of seconds you want) x 60 = (40) x 60 = 2,400
C = 2,400
Right Combinator (for resetting) = (C/3) x -1 = (2400/3) x -1 = 800 x -1 = -800
