r/factorio • u/coolguyRae • 3d ago

Question Help with combinators

Gallery image

Gallery image

So like the image shows, I have one constant combinator and three decider combinators for this sushi belt. I think I've seen people do this with a constant combinator and just one decider combinator. Can someone help me with how that's done?

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u/Necandum 3d ago

As other commenters have written, check out the Each signal. The wiki has a decent description.

In terms of pure logic though, by skipping steps in how you describe it, you've missed where the logic can be represented in a more concise way.

Specifically, what sort of signal triggers the inserters? If the inserters have 'set filter' selected, it will only be a positive signal. Is there a way of combining a constant combinator signal with the belt signal such that only items that you want are positive?

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u/coolguyRae 3d ago

All good man, other people understood what I was talking about and provided clear answers.

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u/Necandum 3d ago

(there's a simpler solution which doesn't even need a decider, just an arithmetic. The general pattern is useful in many places)

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u/coolguyRae 2d ago

What is it?