Hi everyone, I have a question on how to wire a laser pointer to a rechargeable battery. Is there any way to wire this laser pointer in the picture to the battery and avoid and problems when I plug the battery in to charge?
One idea that I had was to just wire a switch into the negative of the laser but my concern with this scenario is that if the switch is left closed when the charger is plugged in, I could damage the laser.
I know I can do it with a microcontroller but I’m trying to keep the cost extremely low and I need to keep the final size as small as possible. Even an arduino nano or mini would be a little too large.
I’ve attached a picture of the components that I’m working with.
Thanks in advance!