Maybe Detector Mk2?

I've given this some thought and decided against adding this. It's just a little too out of scope for this mod, sorry.

This is a lot harder than it might appear, since there's no simple way of making an arbitrary block position emit redstone (Minecraft just doesn't work that way - redstone can only be emitted by blocks which are specifically coded to emit redstone).

@desht Maybe use something like the Redstone Proxy block in XNet?