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Cheap DIY laser pointer
por ColinShoning
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Cheap DIY laser pointer, using 3 AA batteries. There are 2 designs available, one with a switch holder and one without.
Laser: https://www.amazon.com/Focusable-Laser-Module-Generator-200-250mW/dp/B00WJDQZFU
Switch:
Switch I gutted from an old darkroom timer.
The easiest way to connect the batteries together is to slide a piece of aluminum foil into the small slot at the bottom of the design.
Laser: https://www.amazon.com/Focusable-Laser-Module-Generator-200-250mW/dp/B00WJDQZFU
Switch:
Switch I gutted from an old darkroom timer.
The easiest way to connect the batteries together is to slide a piece of aluminum foil into the small slot at the bottom of the design.
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