Minecraft – Cut redstone circuit when a signal is sent

minecraft-java-editionminecraft-redstone

I have a simple thing to do : whenever a minecart is on a Detector rail it triggers a piston to block it, and when another signal is thrown by any source, the redstone circuit is cut and the piston turns off and liberates the minecart

Here is an image of what I started :

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I'm lost for where I should go to cut off the circuit

Thanks you very much!

Best Answer

I created a solution, using the detector rail to put out a redstone torch which then allows a second redstone torch to power some dust which powers the smooth stone which powers a sticky piston attached to the rail blocking it. Then, we can just power the second torch to allow it to go again. Attached below are some screenshots.

Screenshot 1

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