test/html/carousel.html

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0, user-scalable=no"/>
    <title>Documentation - Materialize</title>
    <!-- CSS  -->
    <link href="../../../bin/materialize.css" type="text/css" rel="stylesheet" media="screen,projection"/>
    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">

  </head>
  <body>
    <h3>Carousel within collapsible</h3>
    <ul class="collapsible" data-collapsible="accordion">
      <li>
        <div class="collapsible-header active"><i class="material-icons">filter_drama</i>First</div>
        <div class="collapsible-body"><p>Lorem ipsum dolor sit amet.</p></div>
      </li>
      <li>
        <div class="collapsible-header"><i class="material-icons">place</i>Second</div>
        <div class="collapsible-body">
          <div class="carousel">
            <a class="carousel-item" href="#one!"><img src="http://lorempixel.com/250/250/nature/1"></a>
            <a class="carousel-item" href="#two!"><img src="http://lorempixel.com/250/250/nature/2"></a>
            <a class="carousel-item" href="#three!"><img src="http://lorempixel.com/250/250/nature/3"></a>
            <a class="carousel-item" href="#four!"><img src="http://lorempixel.com/250/250/nature/4"></a>
            <a class="carousel-item" href="#five!"><img src="http://lorempixel.com/250/250/nature/5"></a>
          </div>
        </div>
      </li>
      <li>
        <div class="collapsible-header"><i class="material-icons">whatshot</i>Third</div>
        <div class="collapsible-body"><p>Lorem ipsum dolor sit amet.</p></div>
      </li>
    </ul>


    <script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
    <script src="../../../bin/materialize.js"></script>

    <script type="text/javascript">
    $( document ).ready(function() {

      $('.collapsible').collapsible({
        onOpen: function(el) {
          console.log("OPEN", el);
          var carousel = el.find('.carousel');
          if (carousel.length) {
            carousel.trigger('carouselNext', [0.000001]);
          }
        },
        onClose: function(el) {
          console.log("CLOSE", el);
        }
      });
      $('.carousel').carousel();

    });


    </script>
  </body>
</html>