I made this machine in Minecraft Pocket Edition and I'm not sure it will work on Java, if it does let me know! These are plans for a Minecraft Redstone contraption that spits out gold and a Piglin will pick it up and give you stuff.

Supplies

x2 Hoppers

x1 Dropper

x2 Repeaters

x1 Sticky Piston

x7 Redstone Dust

x1 Compacter

x2 Redstone Torches

x2 Trapdoors (Prefer Spruce)

x2/3 Piglins

x5 Blocks of your choice

x1 Button

x16 Glass

x2 Chests

Step 1:

Place the Hoppers Facing the Double Chest.

*Look at the diagram*

Step 2: Placing Some Redstone

The Button is to Reset the machine.

Repeaters tick speed should be set to 1.

Step 3: More Redstone

Place the blocks of your choice in front of the Redstone with Redstone torches on the blocks like so.

*Look at the diagram*

Step 4: Top Shelf

Placing the blocks of your choice on top of the torch with a dropper at the end.

Repeaters tick speed should be set to 2.

Step 5: Sticky Stuff

Place the sticky piston like it shown in the picture and the block of your choice.

Step 6: Glass Capsule

And now place the glass around the Redstone and stuff and move onto the next step.

Step 7: Door Time

Place a door of any kind (You can also use trapdoors) and place it on top of the hopper by the chest.

Step 8: Prisoners

And then all you need is a Piglin!

I recommend using 2 to 3 Piglins, the machine works best that way.

Introduction: Minecraft Auto Bartering System