A useful thread of redstone knowlege

This is XOR Gate that only one input is on will make output on

The cliff side room. Or, as it is called in the official Minecraft redstone handbook, The Jeb Door. Just so you know, I did happen to figure this out before that book had even came out. I don't have a pic of it, but I will have one soon enough.

Just get the book if you want to know how to do it, seeing as its a bit to complex to be explained without photo references.

And I suck at doing explaining things that are redstone related.