Can a Arduino nano support 3-way switches, if so, what part would it be (D1-D13, etc.)
Also can nano boards support a selector knob if so would it be (A1-A5, etc.)
Like the kind used in house wiring? Technically those are "single throw, double pole".
There's no point with a microcontroller because there are only two states. ...Unless it has a center-off position. In that case you can ground the common (center) position and connect the other two connections to two different digital inputs. Enable the built-in pull-up resistors and you have 3 states/conditions. (Both high when the switch is in the center, or one other the other inputs pulled low.)
@DVDdoug So i would use 1 slot on the nano and just have 2 positives? how would that work
Could i also use the analog plugs for a selector knob
The switches are like the ones in planes
No
Yes
I don't known about airplanes switches. 
alr thx, that should work! Thanks alot!
Does this mean "low-medium-high" as with a light bulb?
Rotary encoder?
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