You should really consider making a place where we can get all your tiny addons and such (like FullDrop and this one), they are REALLY useful!
I don't think I've made that many in the grand scheme of things. Normally it's just a need comes up for something small and I've got time to make it.
hen I wrap a reactor chamber, I can't get any outputs, when I call getEUOutput() on a chamber, I get nil, even though there is a reactor attached. Is it a bug, or 8s this my fault?
What's the result of hasReactor on the chamber? If it's managed to attach properly it should be true (otherwise that would explain why it wasn't getting anything else).
could you also make a method to get the tick remaining on the fuel rods? This would possibly be an average...
Given it's Lua you could get a table of stats like minimum remaining time, time remaining per slot, etc. Maybe that's encouraging micromanaging a little too much though?