What I am trying to accomplish is a circuit that uses no power when idle, and
when the button (momentary switch) is pressed it will power an LED for about 60 seconds. Then afterward it reverts back to rest. I am wanting to power it with 3.0-3.5 volts. How do I go about accomplishing this?
The circuit described in that thread was stated to have been tested and worked from two different people so what it would take to make it work is for you to build it.