MINOR NOTE: The piston on top of the green line needs its block to be extended to start with.
So yesterday I posted my tree farm, today I’ve got a tutorial for it. Not only is it more compact, but it’s quicker! The general idea is that the tree farm does not use any buttons, levers pressure plates (etc). All you need to do is place a sapling and the machine does the rest.
As I said, apologies if this is known already. I was derping with redstone recently and came up with this. It was originally intended for my foosball game, but I ended up not using it due to the glitchy nature of 18 stacked minecarts.
Very useful, tile-able and 1 wide, what more could you ask for?