Tutorials/Hopper

A mechanism that outputs short redstone signal for every item that goes through the dropper. The mechanism slows down the items moving through the dropper and the hopper above to make the outputs comfortable to use for counting mechanisms. The output of this counter can be used in any counting mechanism and can be counted using the /scoreboard command in a Command Block. It is possible to change the outputs timing by replacing the bottom comparator with repeater (to make it slower) or redstone dust (to make it faster). Size: 1x4x5 blocks. This mechanism made by Xbxp.

You can download this mechanism from: Planet Minecraft - Item Counter