Depending on your own setup, this index-number can be different. I have done several test, and the results are steady, between 40 and 50, see picture 16 and 17. This gives a good indication in how much is delivered to the fish. A counter shows how often this has happened. If the resistance of the LDR drops below the threshold the program assumes that food has been released. The program that runs on the Arduino measures the resistance of the LDR before releasing food in the aquarium. The Arduino program runs a sequence of steps, see also attached program: - Open the hatch - Delviver food to the aquarium - Close the hatch - Calcalate the index of food If this happens, clip off a part of the screw and reverse the clip of the feeding tube, see picture 14. After a first test run it appeared the the screw of the hatch servo interfered with the clip of the feeding tube. To build the sensor you need drawing 060 & 080.Īfter mounting the sensor array, a paper clip wire can be inserted between hatch and servo. Also check the dimensions of your components (servo’s, Arduino, LCD). Please verify the drawings before starting your build. – 010 Feeding container – 019 Feeding container coupling plate – 020 Houding feeding machine – 040 Housing Arduino – 050 Cover – 060 Sensor – 080 Hatch The structure of the assembly in components is: The most easy method is to use a beam of light and a light sensor. There are several methods to measure, therefore the design of the sensor is designed to be detachable and replaceable when redesign is needed. The analog pins of the Arduino are used to measure the amount of food delivered to the aquarium/fish. A second servo opens and closes a hatch to avoid moisture from the aquarium entering the feeding machine and feeding container. A servo, connected to a digital pin of the Arduino, rotates the food container. In the feeding machne an Arduino is used as a controller. This project only describes the build of the sensor.
#DIY FISH FEEDER SERIAL#
The link between Raspberry Pi and Arduino can be found here: Fish Feeder Arduino Raspberry Pi Serial Link The build of the feeding machine can be found here: Fish Feeder This project is divided in several subproject: - The build of the feeding machine - The build of the sensor - The link between Raspberry Pi and Arduino In short I don't know for sure when and much the fish are fed when I'm not around. – I have children who like to push buttons, so I have to reset the machine. – To store a time of feeding you have to physically push a button at that time.
– You have only 1 feed per day or 2 feedings per day with an interval of 6 hours.
It's a great machine, but as an engineer I see some room for improvement.įor example: – There is no way to see when there will be a next feeding. I bought the machine to be able to feed my fish on regular times when I'm not around. My aquarium is a Juwel Rekord 800 and has a Juwel feeding machine.
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