A new type of block has been created by the Minecraft Deep Dark Cave biome. Sculks are available in five types: Sculk, Sculk sensor, Sculks Catalyst and Sculk Shrieker. Sculk Sensors detect vibration and send out Redstone signals. But it is not easy to locate.
Skulk Sensors: Where can I find them in Minecraft?
Redstone is probably what you’re using to create a Sculk sensor. However, you cannot make Sculk Sensors in the game, as they are a block only found within the new Deep Dark Cave biome that spawns after Y-level 0, deep underground. This biome is also home to the Warden, who roams the area. However, if you’re quiet, it shouldn’t be an issue. The sensor can be found deep within the biome. Once you locate one of these sensors you’ll need to place wool blocks around it before you attempt to break it.
You can do it without wood and alert the Warden to make it happen. This is what you don’t want, the Warden is hard to kill. We recommend that you bring eight to ten wool blocks to cover the entire sensor. This will prevent unwelcome guests from ruining your fun. After you have completed this, the sensor will be safe for you to mine. Once you have it, you can use it to create Redstone.