How to make a piston turn a block into an item on Minecraft for PS4?

I'm trying to make an auto cobblestone farm and have been trying to make a piston push a block into another slab to drop it into a hopper as an item and into a chest.

However I don't believe it is working because I am playing on ps4 edition. Is there another way to make it happen for PS4?

2 Answers

There is no way to break cobble automatically using only redstone and pistons. You can, however, use TNT, creepers, and withers to destroy the blocks.

If you're playing on 1.14, I do believe that TNT duplicators aren't patched yet. So you can use it to break the blocks as TNT now drops all blocks it breaks. Place a collection at the bottom and coat it in obsidian. If you don't know how to make a TNT duplicator, I think YouTuber Mumbo Jumbo has a tutorial on how to do it. If not you should be able to find one by someone else.