4

So I got an item-transfer system. I got a hopper under a detector rail, which detects whenever the chest is empty, but I have no way to block it.

What should I do?

Improve this question
2
  • 1
    How is your track set up? A single power rail that gets powered when the hopper is empty may work depending on if the hopper is at the end or middle of a line. You may also be able to use a sloping power rail to get the job done, but I'd have to test to see if that would work.
    – Unionhawk ♦
    Commented Oct 1, 2019 at 19:34
  • What exactly are your trying to achieve? Do you want to unload your minecart or your chest? And is your minecart going back and forth from collecting and unloading? For a Minecart unloading you could go for something simple like place your detector rail in a sloped state, blocking the minecart on its way out with a fencegate which gets opened once your minecart is empty. There are tons of tutorials for unloading stations online.
    – Chund
    Commented Oct 2, 2019 at 9:25

1 Answer 1

Reset to default
3

You must use a comparator on the hopper (with one powered rail above it), than a redstone torch to activate it.

Check bellow:

block-minecart_side

block-minecart_up

What happens is that when the minecart move one item into the hopper, the comparator detect this and send one energy pulse to the repeater, that energizes a block. This guy have a redstone above it that charges a second block with a redstone torch on it, consequently deactivating the torch and unpowering the rail. When all items were moved to the chest, there's no more energy, so the redstone torch power on and activate the rail, forcing the minecart to move back.

IF YOUR MINECART CAN'T GO BACK:

The same system above, the difference is that you need a detector rail 1 block far from the hopper and the powered rail must be going down:

up

side

front

down_side

Improve this answer
4
  • Yay but I can't let the minecart go and go on the other side
    – Juliet
    Commented Oct 5, 2019 at 13:09
  • *I can't let the minecart move back
    – Juliet
    Commented Oct 13, 2019 at 10:01
  • 1
    I'll take a look at it.
    – Brhaka
    Commented Oct 13, 2019 at 10:01
  • 1
    Take a look, @InforMatheMusic
    – Brhaka
    Commented Oct 18, 2019 at 9:20

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.