For traps that require closing and reopening, such as hidden doors or floor traps, sticky pistons are essential because they pull the block back, resetting the trap.
A pressure plate, button, tripwire hook, or observer. The Mechanism: Redstone dust, repeaters, and pistons. The Result: A pit, suffocating wall, or lava trap. Core Piston Trap Mechanics lovely craft piston trap wiki full
This is the most common design found on servers. For traps that require closing and reopening, such
A piston trap is a redstone-powered mechanism that utilizes sticky or regular pistons to alter the environment, blocking, trapping, or killing an entity—player or mob—within Minecraft Wiki: Piston . These traps are popular in multiplayer servers for security and in survival mode for mob farming. resetting the trap. A pressure plate