Animation in Unity 4.3

I am pretty new to unity and have figured out a lot but now I am breaking in to animation and havent found much help. My game is 2d graphics. I simply am trying to animate an object when I invoke a method, play it once then stop it. The script for the invoke is attached to my main camera. I want the animation on a plane it's supposed to act as a warning something is approaching (like jet pack joyride). Also I need speed control for the animation.

I will post the code I am currently using but feel this could be accomplished with something simpler. I just dont understand how to animate in unity ( I have no prob in photoshop!). Also 4.3 has a bunch of new techniques for this and I don't know whats best, the Animator is nice but seems to be overkill for what im trying to achieve. Thank you soo much for any help im a little stuck.

 using UnityEngine;
 using System.Collections;
 
 public class Animation : MonoBehaviour {
 
 
     public float FPS;
     private float secondstowait;
     public bool loop;
     public Texture[] frames;
 
     public int currentFrame;
     public bool stop;
 
     // Use this for initialization
     void Start () {
 
         currentFrame = 0;
         secondstowait = 1/FPS;
         StartCoroutine (Animate());
 
     
     }
 
         IEnumerator Animate(){
 
             stop = false;
 
             if(currentFrame >= frames.Length)
 
                 if( loop == false)
                     stop = true;
                 else
                     currentFrame = 0;
             
 
     yield return new WaitForSeconds(secondstowait);
 
     renderer.material.mainTexture = frames[currentFrame];
     currentFrame++;
 
     if(stop == false)
         StartCoroutine(Animate());
 
         }
     
     // Update is called once per frame
     void Update () {
     
     }
 }