I struggled a while to create a dashing widget that would display images posted by a specific user. I build this upon the great foundation by @mjamieson that can be found here. To run this you will need a Dashing dashboard, the official Instagram ruby gem and access to the Instagram Developer API.
You will need to put some files into the right place in order to make this work:
instagram.rb
goes into the/jobs/
subfolder of your dashing installation