Factorio Forums

Hi everyone!

Is there any way to set the constant value on the right side dynamically? I would like to set the multiplier based on conditions, but can't. Having a signal with a given value does not help this situation.

Harb42 wrote: Wed Oct 08, 2025 8:55 pmHaving a signal with a given value does not help this situation.

So do you want it to be Dynamic… or not?

Use a Green wire to provide the Left-side values; and a Red wire to provide the Right-side signal.

Good Luck!

Arithmetic combinator just does arithmetic.

Decider combinator does decisions.

Use decider combinators to put the multiplier you want on a signal (e.g. maybe the signal "M") based on your conditions, and have the arithmetic combinator use that signal as the multiplier.

Have you tried your approach in practice? This approach seems to not work. That's my problem. Using a signal with value on the right side does not do the multiplication with that value.

Harb42 wrote: Thu Oct 09, 2025 9:31 am Have you tried your approach in practice? This approach seems to not work. That's my problem. Using a signal with value on the right side does not do the multiplication with that value.

It's not clear what you mean. We mean this: Compute your factor as virtual signal (here: N) with whatever circuit contraption you come up with, then use that signal in the arithmetic combinator.

And uncheck the R on the left if you want to avoid the N=25 output signal.

Thank you!
Thank you for your help and patience. It seems a grain of sand got into the machine. I retested it based on what you shared and it works.