I am having problems with the ember emitter and receptor. I'm just trying to get ember from the activator to the copper cell, but for some reason, nothing is coming out. I've shift right clicked receptor in the right order and have a lever placed on top of the emitter but nothing is activating. Am I am being stupid and doing something wrong (Like not having it spaced far away enough)? Or is there some sort of issue?
Here's an image of my set up to help visualize.