What i am going to make to day

To day i am going to make a self feeding machine to feed my fish. How i am going to do it i have no idea how to make it. But i no i am going to make the self feeding machine for my fish. the kind of fish I have its a beta fish. My self feeding machine will have two arms that will move to feed my fish. And my self feeding machine will have a timer to set the time so wen the timer rings the self feeding machine will feed my fish.