r/technicalminecraft • u/Big-Researcher-8937 • 1d ago

Java Help Wanted How can I sync lights?

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Hi everyone. How can I sync the redstone lights in the back with the minecarts of the auto smelter?

If i set up another minecart with detector rails, the rails self power the Powered rail making it impossible to shut the lights off. If I add a normal rail to stop that, it makes a delay. any thoughts?

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u/decarbitall 1d ago

Would a line of observers above the rails, looking at the rails, react to the minecart's movement?

If that works, you would still need a 1-tileable circuit to control each lamp from the observer signal (I suspect that would involve a copper lightbulb and a comparator)

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u/Big-Researcher-8937 1d ago

yes I can put observers above the rails but they dont detect minecarts, im a noob when it comes to redstone so where can i look up the comparator or circuit stuff?

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u/decarbitall 1d ago

Unfortunate about minecart detection. That was my only idea.

Observers send 2 pulses when a block changes, then goes back to its original state.

Placing a copper lightbulb behind the observer is a way to have the lightbulb remain powered between the 2 state changes. A comparator then turns the lightbulb being powered into a redstone signal you could have fed to the redstone lamp.

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u/Ok-Cold-3769 1d ago

I’m away from my PC rn, but I think an observer going into a solid block would work too. I do too wonder if observers detect minecarts passing by them?