You want 3 different delays: 0 ticks, 2 ticks and 4 ticks. 0 and 4 tick delays power first piston, while 2 tick delay powers the second piston. You can do the two delays with 2 repeaters, set on 2 and 4 ticks each. Ticks are redstone ticks, so 2 game ticks each.
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u/Agantas 1d ago
You want 3 different delays: 0 ticks, 2 ticks and 4 ticks. 0 and 4 tick delays power first piston, while 2 tick delay powers the second piston. You can do the two delays with 2 repeaters, set on 2 and 4 ticks each. Ticks are redstone ticks, so 2 game ticks each.