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Here's the Automatic Laser poweroff circuit schematic. This circuit provides a visible power indication. In this case, Ground is waiting on one side of the second switch( top of pic). Then after time period this ground is removed thereby safeing the laser and saveing batteries.

laser package design My laser packaging with automatic turn off. Button next to LED applies power to second button (top of box) . I used an FET and cap/diodes to do automatic power down. A safe way to leave batteries hooked up. The button layout allows thumb to be used to enable and fire the...