Introduction: Automatic Tower Builder (Redstone Invention)
Very useless. But fun! This device will build a tower up to 12 blocks high. It is made of cobblestone.
Supplies
Water bucket
Lava bucket
Piston
Redstone dust
Dirt
Step 1: First Make an Infinite Cobblestone Maker
See https://www.instructables.com/id/How-to-Make-a-Cobblestone-Generator-in-Minecraft/ if you don't know how.
Step 2: Put a Piston Under It
Step 3: Attach the Piston to a Clock Circuit
If you don't know how to make one see https://www.instructables.com/id/Minecraft-Short-Pulse-Clock/