Playing through a bit of voidcraft with some small mods like inf quality and 5dim, but we noticed that with our vanilla autocrafter circuit, the electromagnetic plant always chooses the voidcraft recipe for say, blue chips, instead of the vanilla variant that the base is crafting items with. is there a fix for this, a way for the crafter to use a different recipe if there's two options?

I wasn't able to reproduce this. I sent a blue chip signal to the electromagnetic plant and it selected the standard recipe. The voidcraft recipe can't even be made in an electromagnetic plant, unless some other mod is changing that.

Unless you're talking about exalted voidtronic adaptation, which turns voidtronics into blue chips, but that's a separate recipe, and it isn't even available as a signal. It probably should be, so I will fix this bug! But I'm not sure what is going wrong for you here.

Sorry that i'm not able to voice this as clearly as I'd like to- I did mean that its selecting the 'greater voidtronic adaptation' recipe, instead of the 'processing unit'
It's possible one of the quality mods we're using that adds like 30 levels of quality is making it weird, but even with a constant combinator of 'processing unit', setting recipe to an electro plant, the electro plant grabs the 'greater voidtronic adaptation' recipe instead of the expected 'processing unit' recipe. Ill try it out with just voidcraft alone and see if i can duplicate it without any other mods

Sorry that i'm not able to voice this as clearly as I'd like to- I did mean that its selecting the 'greater voidtronic adaptation' recipe, instead of the 'processing unit'
Edit- I've figured out the incompatibilities. Whatever 5dim's modpack is doing to the crafting menu tabs, how it sorts them, is messing up the default selection for some items, such as processing units. the game handles all the extra qualities perfectly fine, but since 5dim wants a custom ui, but doesnt include voidcraft items, leaving them in the vanilla grouping, the electro plants are selecting voidcraft recipes instead of the vanilla ones.