I am new to this forum. I've been appreciating the things I've learned from All About Circuits site for a long time, thanks.
I need to push a button to activate a 500 mW laser module for 20 or 30 seconds. Lots of advice on how to do it for a single LED. But this is for a 500mW (or larger) 9V laser module with a 9V battery. I have a handful of transistors around, lots of resistors & switches & several capacitors. I been unable to find any answers so I asking here. I know little about electronics and I am dabbling in micro-controllers and automation gadgets. I have the engineering and prototyping done on this but just can't figure out how to wire the "ON" switch! And this gadget needs to be as tiny as practical (or it'd have a relay and an arduino nano in it). Any help would be appreciated.
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I need to push a button to activate a 500 mW laser module for 20 or 30 seconds. Lots of advice on how to do it for a single LED. But this is for a 500mW (or larger) 9V laser module with a 9V battery. I have a handful of transistors around, lots of resistors & switches & several capacitors. I been unable to find any answers so I asking here. I know little about electronics and I am dabbling in micro-controllers and automation gadgets. I have the engineering and prototyping done on this but just can't figure out how to wire the "ON" switch! And this gadget needs to be as tiny as practical (or it'd have a relay and an arduino nano in it). Any help would be appreciated.
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