How to switch on/off an LED pen idea Answered
I have this idea on trying to design a pen that lights up using an LED and some button batteries. I just don't know how to design the switch. I'm a pen turner and want to try to keep the electronics down to the size of the inside of a brass tube that has a 6.22mm inside diameter.
what i have decided on so far:
- light source: 3mm white LED
- power source: SR521 button cell x 3 (stacked in a pack that i'm designing for 3D-printing)
I would love to use a standard slimline pen cap for a finished look...which normally would be pressed into the brass tube...but i'm not against modifying it to work as the "button". I've attached an image of an example of the pen cap and tube.