Hi all

I would like to build a circuit with breathing lighting effect for 5 to 6 LED, and they breath individually at random time, so to create some completely random lighting effect, and the circuit may be powered up by a 3V battery.

So how can this individual random time for switching the LED on and off done please? is it possible to finish this design with a microcontroller?

I have done some search outside this forum, ppl seem to use a 555 timer to do this effect, but if I follow this method, does it mean that I will need 1 timer per 1 LED I have in my design please?