Active job is running LED

Hello, I would like to put a blinking led before the door, when the laser is running.
Is there an idea here, how to control a relais, when lightburn is running?

If you put a LED in parallel with your laser pwm signal you can know if the laser is active and potentially dangerous. The problem as I see it, is there isn’t an obvious way to know if the engraver is about to become dangerous.

Remaining near your engraver while it is active is a safety requirement.

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