diff --git a/assets/elevator.jpg b/assets/elevator.jpg
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Binary files /dev/null and b/assets/elevator.jpg differ
diff --git a/elevator.ino b/elevator.ino
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index 0000000..4a13ee6
--- /dev/null
+++ b/elevator.ino
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+int andar;
+int your = 0;
+
+void setup(){
+  //sensores para ir para algum canto
+  for (int i = 4; i<=7; i++){ pinMode(i, INPUT_PULLUP); }
+
+  //sensores qual q ta
+  for (int i = 8; i<=11; i++){ pinMode(i, INPUT_PULLUP); }
+   
+  
+  //LEDS
+  for (int i = 22; i <= 28; i++){ pinMode(i, OUTPUT); }
+ 
+  //motor
+  pinMode(3, OUTPUT);
+  pinMode(2, OUTPUT);
+ 
+  Serial.begin(9600);
+}
+
+void getAndar(){  
+  // pega qual ta 
+  if(digitalRead(4) == LOW){ andar = 4; }
+  else if (digitalRead(5) == LOW){ andar = 3; }
+  else if (digitalRead(6) == LOW){ andar = 2; }
+  else { andar = 1; }
+}
+
+void getYourAndar(){
+  // pega qual ta
+  if(digitalRead(8) == LOW){
+    your = 1;
+    digitalWrite(22, LOW);
+    digitalWrite(28, LOW);
+    digitalWrite(25, LOW);
+    digitalWrite(26, LOW);
+    digitalWrite(27, LOW);
+    digitalWrite(23, HIGH);
+    digitalWrite(24, HIGH);
+  }
+ 
+  else if (digitalRead(9) == LOW){
+    your = 2;
+    digitalWrite(22, HIGH);
+    digitalWrite(23, HIGH);
+    digitalWrite(28, HIGH);
+    digitalWrite(26, HIGH);
+    digitalWrite(25, HIGH);
+    digitalWrite(24, LOW);
+    digitalWrite(27, LOW);
+  }
+ 
+  else if (digitalRead(10) == LOW){
+    your = 3;
+    digitalWrite(22, HIGH);
+    digitalWrite(23, HIGH);
+    digitalWrite(28, HIGH);
+    digitalWrite(24, HIGH);
+    digitalWrite(25, HIGH);
+    digitalWrite(26, LOW);
+    digitalWrite(27, LOW);
+  }
+ 
+  else if (digitalRead(11) == LOW) {
+    your = 4;
+    digitalWrite(23, HIGH);
+    digitalWrite(24, HIGH);
+    digitalWrite(28, HIGH);
+    digitalWrite(27, HIGH);
+    digitalWrite(22, LOW);
+    digitalWrite(25, LOW);
+    digitalWrite(26, LOW);
+  }
+ 
+  else {
+    your = 0;
+    digitalWrite(22, LOW);
+    digitalWrite(28, LOW);
+    digitalWrite(25, LOW);
+    digitalWrite(26, LOW);
+    digitalWrite(27, LOW);
+    digitalWrite(23, LOW);
+    digitalWrite(24, LOW);
+  }
+}
+
+void move(){
+  if(your < andar){
+    digitalWrite(3, HIGH);
+  }else{
+    digitalWrite(2, HIGH);
+  }
+}
+
+void goNext(){
+    while(andar != your){
+      move();
+      getAndar();
+    }
+}
+
+void loop()
+{ 
+  getAndar();
+  getYourAndar();
+  Serial.print("qual ta --> ");
+  Serial.println(andar);
+  if(your != 0){ goNext(); }
+}
diff --git a/readme.md b/readme.md
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--- /dev/null
+++ b/readme.md
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+# Elevator with arduino
+
+This is a project I helped by coding for some friends of mine from my former school.
+We created that to a thecnology week to demonstrate what we were doing on the eletronics course.
+
+
+![Elevator photo](./assets/elevator.jpg)
+
+My friends were in charge of doing eletric/eletronic part of the project, and I created the code that you can see on the `.ino` file.
+
+The operation is simple, you only need to click on a button to select a floor and, when the elevator reach the selected floor, you'll be able to select another one, as a common elevator.
+
+## Demonstration
+
+
+
+https://user-images.githubusercontent.com/75098594/193454695-da2093b5-357b-4aa3-b0b5-98036e6be475.mp4
+