Switch loops with SPDT switch I have made a drone/car quadruped robot thing and I need help with the code. I have found two codes to use to control each aspect of it but I need help to connect them. I have made a radio controller with a Xbee 3 Pro that has a spdt (two position switch) and I want to use it to switch the modes. I want the car to be LOW and the drone to be HIGH (If it helps the switch is on pin digital pin 9 of a Arduino Nano). I am a beginner at the coding aspect of the project and I would appreciate all the help I can get.

https://www.youtube.com/watch?v=enT-O4NwCzc
There is no need for a SPDT switch. A SPST works just as well.
If you have a SPDT switch with 3 positions (pole 1 closed, open, pole 2 closed) you can use it to activate one pin or the other, or neither.
Let's pretend your switch is an SPST. Ignore one of the poles (pole 2, say.)
Connect a digital pin to pole 1. connect the common (center) pin to ground.
Set your digital pin to INPUT_PULLUP. Now, when the pin is LOW, the switch is closed (mode A). When the pin is HIGH, the switch is open (mode B).