How to Make a Simple Automatic Minecraft Cobblestone Generator!

this is a simple way to make a cobble stone generator become automatic if you havent seen my instructable on how to make a Cobble stone generator you read have to read it first.  this also shows you how to make a repeating redstone circuit.   

*Piston 

*cobblestone generator in my last instructable 

*redstone

*redstone repeater

*redstone torch  

*at the end of the generator in the middle destroy 1 brick   (look in the picture)

*add 1 bock to the side making it longer 

*put the piston in the 1st empty space top facing horizontal (look in picture)

*clear an empty space a few blocks away from the generator

*make a box with redstone repeters but dont put on the sides (look in picture) 

*in the sides fill it in with redstone making a box

*set the repeters to the longest they can go

*put the torch down right beside the redstone the break the torch immediately the light on the repeaters should be moving in a pattern

*on one of the redstone sides make a wire going to the piston the piston should go then stop and so on cobble stone should come out if made right

thanks if you have any questions comment and please vote