Plasma Screen Effect

In preparation for a web series that Pro Juice have in pre-production, i've been playing around with some effects that are to appear in a number of the episodes. The first effect is replicating the look of a large screen plasma TV. One of the characters appears on a screen mounted on a wall and then interacts with the characters in the room. It looks like we will achieve the effect in post, so in this tutorial i take you through some of the steps involved in creating this dot-matrix type pattern which is in effect a working style guide for some effects that will appear in the web series - The Science of Night.