I was assuming some kind of 3.3V or 5V logic, like an esp32 or an arduino. I don’t mess around with big power circuits at all. If I inject power it’s going to be pretty low wattage. Sorry for the confusion.

Ya. I don’t run more than 5A (basically a usb) through 3d printed stuff for that reason. Filament is designed to melt.

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Our understanding of a lot of things becomes outdated pretty quickly. Like sociology, medicine, psychology, even ideas about literature and philosophy change.

I’m not taking electronics advice from someone who uses the term lappies.