Height Controller

This addon allows you to set what level the cart will go to.

Interface
The number and the green bar is what level you have set it to. The yellow bar is it's current level. The up arrow increases the number and the down arrow decreases the number (shift click will change the value by 10). The button between the up and down resets the number and green bar to current level. The different colors is what you can find on the different levels. (From L. to R.: Diamond, Redstone, Gold, Lapis Lazuli, Iron, Coal, Emerald)