BUD switch

The BUD Switch was a block that was possibly planned to be added in the Redstone Update for use with redstone circuitry. BUD stands for Block Update Detector and configurations of such a device have existed in Minecraft due to a glitch labelled as a "feature", allowing circuits to detect block updates, using a piston powered in a way it does not recognise until it has been updated by using blocks such as growing grass or decaying leaves or having to place a block. This block would simplify the process into one block. This block wasn't added in the Redstone Update. It was seen in the Mojang 2013 April Fool's Joke, claiming that they would get rid of "Block Update Glitch" so it would never be in the game again, then states that the BUD switch is now a block.

History
BUD Schalter Interruptor DAB Датчик обновления блока (блок) BUD开关