I'm building a LED flashlight powered by a 3.7v lithium battery that must be
ON when I push the button
OFF when the button is released.
The only push button that I have in stock works other way round: by default is always
ON (the circuit between its 2 poles is connected) and when I push it interrupts the circuit entering in
What is the proper way to reverse its logic to the desired (
ON when I push,
OFF when I release)?