this is how to make a Minecraft wave machine

Step 1: The Power Source

in the first step we will need 3 red stone, 1 comparator, 1 lever.

The three 3 red stone will be placed in corner like shape which the comparator placed in the open space. Then the lever behind the comparator.

Step 2: Adjust the Comparator

Click on the comparator so the light glows red.

you’ll need 5 or more redstone and one repeater.

connect the redstone to the redstone of the last build and go in a straight line. Then place a repeater at the end

place one repeater in front of the first repeater (separated by one block)

Then place a repeater every other block for however far you want it to go (next to the second repeater)

Place a repeater one block back / in between each of the first repeaters

click on all the sideways repeaters once.

Put redstone in between the sideways repeaters

On the front facing repeaters place a sticky piston with a slime block on top

In between the side repeaters place redstone

Place a dirt clock on each of the slime blocks

Next place a track on top of that

Then place a minecart on the tracks

destroy the track and slime block then go click the lever. It should work