New Twiddle

components.my-component-two.js

import Ember from 'ember';

export default Ember.Component.extend({
});

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
actions: {
setValue() {
//Ember.run.scheduleOnce('sync', this, () => {
this.set('value', Math.random());
//}
}
}
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{my-component value=value}}
<hr>
{{my-component-two value=value}}
{{outlet}}
<br>
<br>

templates.components.my-component-two.hbs

{{value}}
{{yield}}

templates.components.my-component.hbs

<button {{action 'setValue'}}> set </button> {{value}}

{{yield}}

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}