Kiershar | Minecraft Tutorial : Arrow trap version 2 @kiershar | Uploaded March 2011 | Updated October 2024, 1 hour ago.
This improved arrow trap is smaller, easier to build and fires faster. Uses the new repeater block!

When the iron block is destroyed, the redstone torch fall and activate a pulse machine that is linked to a dispenser.

See the original arrow trap here :
youtube.com/watch?v=lNwZhw7evyM