Well, unless you manage to reverse the +12 & Gnd, I don't see where'd you have issues. Just be careful not to put 12V on an arduino input/output pin, that would be bad (catastrophic).
Where does the arduino get its power from?
Well, unless you manage to reverse the +12 & Gnd, I don't see where'd you have issues. Just be careful not to put 12V on an arduino input/output pin, that would be bad (catastrophic).
Where does the arduino get its power from?