Electronics newbie here !
I am building a handheld remote that will have 4 LEDs turn on when remote stations acknowledge a data transmission. To save battery power I put the handheld unit to sleep as well as power down the Xbee radio.
To further reduce my power needs, I am thinking that if I had the LEDs slowly blink while the unit is sleeping I would save power while the LEDs are in the off state.
My questions :
1- Can this be done with some external components like a 555 timer ? The LEDs share the same ground but are connected to 4 different arduino pins.
2- Is this worth doing or will the extra components consume the power that I would like to save from having LEDs off. They are surface mount green LED, the resistors are 330 Ohm surface mount.
I have attached a basic schematic of the LEDs.