exchange setup

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exchange setup

Postby smu42 » Wed Sep 13, 2017 1:08 pm

Hi,

I'm wondering if it would be possible to make some kind of "trade machine" that trades items fairly, meaning in a 1-1 ratio.

General setup:
2 conveyors bringing one type of item each, let's say wood and coal. The trade machine should than only allow the coal to proceed, if there is also [Edit:] wood and vice versa.
Ideally, it should be fair, so that each arriving coal let's exactly one wood through and vice versa.

I played around with combinators a bit, but couldn't really find a good solution.

Or maybe I should just make a custom assembly machine for that? But then I would have to make one for each set of items, I guess?
smu42
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Re: exchange setup

Postby Greybeard_LXI » Wed Sep 13, 2017 3:53 pm

Load the items into a pair of chests with inserters for output. Then connect the chest to the opposite inserter with a green wire and the condition "If anything > 0". Also set the stack size override on the inserter to 1.

They say a picture is worth a thousand words. Here is a blue print string so you can create your own picture.
Blueprint
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
Greybeard_LXI
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Re: exchange setup

Postby smu42 » Wed Sep 13, 2017 7:38 pm

Ah, so simple, now I'm a little mad, I didn't think of it myself :D
Thanks!
smu42
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