TNT Cannon With Spread

Hello, today I will show you how to build a TNT cannon with a spread feature.

You will need...
Obsidian
Redstone
A ladder (Or slab)
Button
Comparator
Repeater
Dispenser

Place 3 Obsidian in a row as shown

Place 8 Dispensers as shown (copy pictures if needed)

Place Repeaters going into the Dispensers as shown

Place a button in the middle of the 3 obsidian

Place Redstone where shown in pictures

Place obsidian where shown in pictures

Make a thing that looks like a car as shown in pictures

Place dispensers where shown

This is where you choose ladders or slabs...
Ladders make the TNT go up
Slabs make the TNT stay down
Test if you don't believe me

Place repeaters going into the dispensers

Place redstone where shown

Place repeaters on 1 tick as shown

Place 2 more repeaters in front of the other ones making sure that these are on full ticks

Place comparators In front of the repeaters

Make sure the lights on the comparators are turned on (right click or press the left trigger)

Make the redstone go around the comparator as shown in the pictures

Now all you have to do is fill up all the dispensers

With ladders it will make the TNT go up so if you needed to shoot over a wall then use ladders
If you need to shoot straight then use slabs.
Enjoy firing TNT at your friends