Talk:Update 0.15.0/@comment-28533436-20160523190323/@comment-25014034-20160523192116

Check out the Observer Block page for more information, though I'll try to sum it up here.

The Observer Block makes use of something called BUD- Block Update Detection. This feature activates a redstone device such as a piston when a block near it is updated. This block will act as a BUD Switch.

Darth wikia25 (Contact Me) 19:21, May 23, 2016 (UTC)