How To Make Automatic Fish Feeding Machine

How to make automatic fish feeding machine, or semi automatic fish feed equipment by assembling yourself without a micro controller. The machine tool that I made for the aquarium, but it can also be used for ponds, it's just that it has to be modified to make it more waterproof in case of rain. This tool is electric by regulating the amount of feed given to fish. So the amount of food can be adjusted electronically. Feeding fish with this automatic feeder is very rewarding.