This design is self-resetting. Once the entity is removed from the pressure plate or tripwire, the inverted signal will restore the pistons to their default state. Always test the trap yourself in Creative Mode before deploying it in your main survival world.
Place 15 pistons on the right wall directly mirroring the first set. lovely craft piston trap 30 full
Do not leave the redstone visible. Cover the top of the mechanism with blocks that match the surrounding biome. If you are building in a desert, use smooth sandstone. If you are building in a cave, use stone or cobble. Escape Prevention This design is self-resetting