Extracting the values of Field Collection
Do you want to access the values or the rendered output of those field collections?

For the second, you're supposed to configure the view display to display the fields of the collection. I don't know how it works exactly. Looking at the code, the field collection itself should have a view display UI, just like the node itself, where you can configure each field.

If you want to access the values, then you should do the following:


Do not use getValue(). It returns non-computed properties only and it returns them as a simple array. You want the field item object. 
content is the rendered output, node is the node object with the values. So, you'd use for item node.field_robot. Looking at the code, it seems you'd need to use item.getFieldCollectionItem() and from there, access a certain field again, e.g. item.getFieldCollectionItem().yourfield.value.

But... from looking at the code a bit and that it has two major 8.x branches and not even an alpha release yet... it might be too early to use that project. Maybe you want to look at Inline Entity Form (8.x-2.x actually seems to depend on that) together with e.g. a node type or custom entity type or Paragraphs. We use the second quite actively and it's pretty well progressed for Drupal 8.