Repeater switch timer

[sarkiamada]

I want a switch timer, that will switch on for 0min to 1hour and off for 0min to 1hour. i recently found http://www.reuk.co.uk/buy-REUK-SUPER-TIMER-3-MINI.htm and bought it, but the programming part is what i couldn't understand. i have already bought it but i can't program it, so i'm looking for any other same switch wit easy programming. thanks

 

[ahmad1954]

if you know a little electronic, you can build timer with 555 easily. just search 555 timer

 

[BrunoARG]

I would not recommend the usage of a 555 IC, because to charge a capacitor in exactly 1 hour is almost impossible because of temperature, component tolerances and ambient noise. I recommend the usage of a 'high' frequency clock and then to divide it. Another option is to use a MCU.