Too busy to look after your fishes? Check out the DIY Auto Fish Feeder!


Most of us own pets like cats and dogs to keep us company. But, some of us prefer keeping fishes as it sends some pleasant vibes through us when we see them. The thing is, life always gets in the way of keeping them fed! So, we go out and buy those automatic fish feeders which are easily available in the market for about 50 Euros.

A guy named Brian faced the same problem and he bought tones of those automatic fish feeders. But, he was very disappointed with them since most of them dropped a huge clump of food at a time. Also, it drained a new set of batteries within a week. So, he found that it wasn’t any convenient than feeding the fish himself.

Brian decided to make his own fish feeder system! You don’t need much stuff to make it. In fact, you can build it out of the stuff which you usually find lying around the house.

Well, how many of you have those Tupperware bins lying just about everywhere? Now’s the time to put them into good use! The Tupperware bin is used as the main housing inside which three pieces of plastic are glued to make a v-shaped hopper. So, when the fish food is loaded into the hopper, it falls to the bottom and meets a reverse-spinning drill on the way which acts like an auger and plays a role in pushing the food out of the container. The drill bit is actually powered by a small stepper motor which is connected to it by an enhanced coupling made from a silicone sealant cap.

Moving on to the control system, it is an Arduino and a stepper motor driver chip. Brian figured out through trial and error that 100,000 half steps of the motor dumped a good amount of food into the tank. Also, the drill bit delivery method sprinkles the food nicely for the total enjoyment of the fishes. There is an AC timer unit which controls how frequently the Arduino is powered on and thereby helps to keep the food flowing at regular intervals and later feeds the fish.