If u did not see the vid on my channel than click on this link https://www.youtube.com/watch?v=G1NCcZ9ukL4&t=2s and come back to my blog. If u came back then u probably want to build this #minecratbamboofarm with me.
The first thing u want to do is build 12 by 12 by 1 box and leave the top open. Then go inside and on the second layer put pistons or stick piston but remember that stickeypostions are a waste of time and on the layer below the top layer place observers and run a redstone line to the bottom or the pistons place bambo an hopper minecarts. If u want get a ton of bamboo for maximum efficiency is to do 4. If u do 5 the hopper will overflow and bad stuff will happen. If u have any suggestions please comment on this post.