Need A Simple Alarm Clock Circuit

[Handiplus]

Sorry this is my first time here..and i sincerely need a simple alarm clock circuit for my project..those alarm clock that we use in our daily life..i need this alarm clock circuit because i am making a project...an auto pet feeder which needs an alarm clock to trigger it..so i am making a request on how to make the alarm clock connected so simply that it will be automatic and being able to have a sting or something attached to it so that i can allow the container to open up when the time is up for the pet feeding time.. (a low cost auto pet feeder)using a plastic container and a daily use alarm clock..
This help is need ASAP..So Anyone please help me..thanks alot!