You need to use two Arduino to separate the code of the servomotor from the code of the LCD, the sensor and the LEDs. Here is a table containing the prices of the components and where you can by them (picture 9) You need to cut some holes in the bottle to let the food drop to your fish We took a plastic bottle as our fish food tank The resistances are mainly used to limit the current in some components. You also need to use 2 LEDs to indicate if the water temperature is too high or too low You also need to use a 10 kΩ potentiometer to control the contrast of the screen and a 220 Ω resistor to limit the current in the screen. The LCD screen is used to display the temperature information. The sensor can be used in temperature of -55 to 125☌, which is far more than what we need. The sensor determines the temperature in the water and send this information via a 1-wire bus to the Arduino. The rotation of the bottle allows to drop the food for the fish. In our case, the servomotor will be connected to a plastic bottle which would act as the fish tank. Then, the servomotor which has the ability to reach predetermined positions and keeping them. Next, we have the breadboard and wires which allow us to achieve the different electrical connections. This interface is the main component of our project with which we supply the other components. It is therefore a programmable interface. Here is a list of the main components you will need to do this project:Īn Arduino Mega is an electronic card equipped with a microcontroller which can detect events from a sensor, to program and to command actuators.
#DIY AUTOMATIC FEEDER FREE#
So, feel free to improve this project by yourself in order to take care of our fishes. However, the main components will be described to you in this instructable.Īt this rate, the main function is completed, but every project can be pushed further, improved and enhanced. The model materials can be totally substituted by other components with different sizes, to adapt the project to your own aquarium. In this project, you will find the way to rebuild our project for your own use. For this, we also wanted to know the temperature of the water because fish need to be kept in an optimal range of temperature, depending of the fish species.īecause of the time constrain, in this project we will focus in feeding the fish and measuring the temperature. The aim of this project is to feed our fish everyday without thinking about it. Indeed, the fishes have to be fed up to twice per day. And the third condition concerns the food. Finally, the water has to be kept in an optimal range of temperature, depending of the kind of fish. This water has also to be aerated and partially renewed to decrease undesirable substances concentrations. The second condition concerns the water which has to be filtered permanently. The first one is the size of the aquarium which has to be big enough to give space to fishes to swim freely. So, to solve this problem, we had this project idea which should interest you too.Īs you should know, a fish needs some requirements to live in good conditions. Sometimes his parents take care of his fish, but they also don’t have much time to do it every time.
It happens to our friend every time because he comes back home late and the next morning, he has to leave home early.
Have you ever forgot to feed your fish ? Or are you so busy that you don’t have much time to take care of it and it finishes to be part of the furniture ? The idea of making an automatic fish feeder came out after few brainstorming. The idea was to make something useful and that we are interested in. As part of our engineering studies we were asked to use an Arduino or/and a raspberry in order to solve a daily problem.
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