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Questions about redstone contraptions and machinery in Minecraft. For command block contraptions, use the "minecraft-commands" tag instead. Always use this tag together with the "minecraft-java-edition", "minecraft-bedrock-edition", "minecraft-legacy-console", or "minecraft-education-edition" tag.

3 votes

How can I generate a redstone signal when players are near?

If you are in creative, run a clock wired up to a command block that has the command /testfor @p[r=some number] with a comparator output to the pistons.
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