Yeah, but then it wouldn't really be the carts that do the retrieving from each storage. And you might as well just retrive the items directly to your position through the pipes. The last step with the carts would be purely cosmetic.Well if you do Logistics Pipes you could set up the pipes to feed into the item loader (Or whatever it is called.) and then just send the cart along for pick up.
What you need is something like the Remote Orderer that can be set to export each item to individual pipes.
Best way(without having to individually program each item into a CC script) that I can think of atm would be to have a ME access terminal and a small storage with 1(or a stack) of each item stored. Then have level emitters for each item set to emit redstone signal once the level goes under 1. This redstone signal would then spawn a minecart at the relevant items storage and bring more of the item to the small ME network. This way you can use the interface of the ME access terminal to control the carts.
You could also set up the reverse, as in when there are more than 1 item(or a stack) in the small ME network, the items get exported to a minecart and send to the relevant storage.
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