How to Build a Piston Drawbridge in Minecraft

Dig a 4 long by 4 to 6 wide hole. Make it 4 blocks deep.

Craft 6 sticky pistons. Place them 2 blocks away from the width edge. Make sure that it's 1 away from the long edge, too. If cheats are enabled, you can use the command /give @s 29 6

Place blocks on top of the pistons. Connect redstone trails to the pistons.(but not the side center ones) Then, connect the 2 separate redstone trails together. Now take a redstone repeater and place it in between where the 2 separate trails connect.

Take 2 redstone repeaters. Place them 1 block away from where the side center pistons are.

Make a staircase shape and place a lever at the top. Connect redstone trail to the lever.

Test your contraption. If it works, cover it all up and prepare for the next step. If not, try repeating the steps again, or toy around with it.

Craft some buckets. Fill them with water or lava/magma.

Turn on the bridge. If you covered the hole, then next to the bridge, dig 2 3x1 holes and cover the bottom of that. That will make a pasture shape if done correctly.

Pour your lava/water into the two indentations. Refill the bucket(s) and continue to pour the contents into both sides. Keep pouring in the buckets until the holes are full, but not overflowing.

Now you have a drawbridge! Make sure it works, and if you don't understand the instructions, watch Paul Soares Jr's Survive and Thrive Season 2 video on YouTube. If you are a beginner, you can play the demo version of Minecraft without paying for it. You have to register for an account and download a launcher. Then you can play for 100 minutes for a maximum of five days.