I have never seen a 1F capacitor in my life. Must be very BBBIIIGGG I suppose !

Venkat :

I am sure you have also not seen one - and will be difficult to source (generally here in India ). So you can use a 3.6V Lithium battery instead in place of the super capacitor. Dont forget the blocking diode. Otherwise the battery will foolishly try to power your whole circuit when the main power is OFF!!

Raghu