long time ago when i started learning electronics and while i was playing with microcontroller programming, i found out this strange behavior, i do not remember what exactly i was trying to do :D, anyway, i waill be glad if someone explains what is going on.
as you can see when i get my hand close to PORTB.3, the led switches on "see the code below".
*this works only if you are using DC power supply.
*this will not work if your home suffers from power outage!!!