An Arduino elevator system that will service 3 floors, using the servo motor to represent the elevator being at various floors, and LED’s to indicate which floor you are on.

elevator-TEJ3M.ino

#include <Servo.h>
// Made for final TEJ3M Culminating April 2021
Servo myservo; // create servo object to control a servo
int pos = 0; //makes a position variable to easily write code for it
int green = 10; //sets the green LED on pin 10
int yellow = 9; //sets the yellow LED on pin 9
int red = 8; //sets the red LED on pin 8 


void setup() {
   myservo.attach(0); //attaches the servo on pin 0 to the servo object
   pinMode(green,OUTPUT); //makes the pin an output
   pinMode(yellow,OUTPUT); //makes the pin an output
   pinMode(red, OUTPUT); //makes the pin an output
}
void loop(){

  myservo.write(0); //puts the servo to 0 degrees to "reset" it
  delay(5000); //waits 5 seconds
  
  for (pos = 0; pos<= 10; pos += 1) {// goes from 0 degrees to 10 degrees (floor 1)
    //in steps of 1 degree
    myservo.write(pos);
    delay(15);
  }
  digitalWrite(green, HIGH); //turns on the green LED to show floor 1
  delay(5000); //waits 5 seconds

  digitalWrite(green, LOW); //turns off the green LED (leaving floor 1)
    for (pos = 10; pos<= 50; pos += 1) {// goes from 10 degrees to 50 degrees
    //in steps of 1 degree
    myservo.write(pos);
    delay(15);
  }
  digitalWrite(yellow, HIGH); //turns on the yellow LED to show floor 2
  delay(5000); //waits 5 seconds

  digitalWrite(yellow, LOW); //turns off the yellow LED (leaving floor 2)
    for (pos = 50; pos<= 170; pos += 1) {// goes from 50 degrees to 170 degrees
    //in steps of 1 degree
    myservo.write(pos);
    delay(15);
  }
  digitalWrite(red, HIGH); //turns on the red LED to show floor 3
  delay(5000); //waits 5 seconds
//elevator goes back down
  digitalWrite(red, LOW); //turns off the red LED (leaving floor 3)
  for (pos = 170; pos >= 50; pos -= 1) {//goes from 170 degrees to 50 degrees
    myservo.write(pos);
    delay(15);
    }
    digitalWrite(yellow, HIGH); //turns on the yellow LED to show floor 2
    delay(5000); //waits 5 seconds

    digitalWrite(yellow, LOW); //turns off the yellow LED (leaving floor 2)
    for (pos = 50; pos >= 10; pos -= 1) {//goes from 50 degrees to 10 degrees
    myservo.write(pos);
    delay(15);
    }
    digitalWrite(green, HIGH); //turns on the green LED to show floor 1
    
    delay(5000); //waits 5 seconds
    digitalWrite(green, LOW); //turns off the green LED before restarting loop
    
}