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Sain Smart Controller Board (GRBL) User Manual — questions & answers

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Where do I connect the signal wire for 3-wire limit switches on the SainSmart GRBL controller board, and why is my switch labeled 12V instead of 5V?

2026-05-29 1 answer

Based on the SainSmart Genmitsu Controller Board (GRBL) manual, here is the guidance for your limit switch connections: Connection Point: Limit switches are connected…

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