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How do I make a 24 hour timer? What controllers and schemes you suggest? Answered



1oloo, you've asked three different questions about timing circuits.  How about telling us exactly what the application is and what you're trying to achieve and we should be able to suggest a solution for you. 

If you only need to switch equipment on and off on a 24H cycle, by far the easiest solution is to buy a mains powered timer which plugs into a wall socket.  This will cost a couple of Pounds / Dollars.  Don't forget that you can plug a wall-wart into the switched socket if you need to control smaller equipment.

You're not interested in buying one then?


What do you want the timer to do ? 
The obvious answer is use an Arduino.