I'm no engineer and hence the reason for posting... I'd like to make the smallest possible powered LED unit I can - that also has some sort of on/off switch included. I have a space limitation of about 5mm x 5mm (it's a cylindrical piece of plastic). I'd like to NOT have a protruding switch of any sort to turn it on/off. So, I was thinking of the possibility of using a magnetic switch or something.
Can anyone give me input/advice? I would think with all of the nano-tech that's starting to roll out, it should be feasible. I definitely know the LED wouldn't be the size issue, as I've received samples from KingBright that you can almost not even see on a counter top!