diff --git a/starter_code/.gitignore b/starter_code/.gitignore
new file mode 100644
index 0000000..496ee2c
--- /dev/null
+++ b/starter_code/.gitignore
@@ -0,0 +1 @@
+.DS_Store
\ No newline at end of file
diff --git a/starter_code/elevator.js b/starter_code/elevator.js
index 5339f35..0627811 100644
--- a/starter_code/elevator.js
+++ b/starter_code/elevator.js
@@ -1,19 +1,57 @@
 class Elevator {
-  constructor(){
-    this.floor      = 0;
-    this.MAXFLOOR   = 10;
-    this.requests   = [];
+  constructor() {
+    this.floor = 0;
+    this.MAXFLOOR = 10;
+    this.requests = [];
+    this.direction = "up";
+    this.interval;
   }
 
-  start() { }
-  stop() { }
-  update() { }
-  _passengersEnter() { }
-  _passengersLeave() { }
-  floorUp() { }
-  floorDown() { }
-  call() { }
-  log() { }
+  start() {
+    //comprueba con el comprueba el floor y si esta en maxfloor no aumenta mas y baja
+    this.interval = setInterval(() => {
+      /* if (this.floor < this.MAXFLOOR && this.direction == "up") {
+        
+        this.floorUp()
+      } else if(this.floor >= 0 && this.direction == "down") {
+        this.floorDown()
+        
+      } */
+      this.floorUp();
+      this.update();
+    }, 1000);
+  }
+
+stop() {}
+update() {
+  return this.log();
+}
+_passengersEnter() {}
+_passengersLeave() {}
+floorUp() {
+  if (this.floor < this.MAXFLOOR && this.direction === 'up') {
+    this.floor++;
+  } else {
+    this.direction = 'down';
+    this.floorDown();
+    
+  }
+}
+floorDown() {
+  if (this.floor > 0 && this.direction == 'down') {
+    this.floor--;
+  } else {
+    this.direction = "up";
+    this.floorUp();
+  }
+  
+}
+call() {}
+log() {
+  console.log(`Direction: ${this.direction} / Floor: ${this.floor}`);
+
+
+}
 }
 
-module.exports = Elevator;
+module.exports = Elevator;
\ No newline at end of file
diff --git a/starter_code/index.js b/starter_code/index.js
index 5e480eb..f0531af 100644
--- a/starter_code/index.js
+++ b/starter_code/index.js
@@ -1 +1,3 @@
 const Elevator = require('./elevator.js');
+ const elevator1= new Elevator();
+elevator1.start();
\ No newline at end of file