Felix and I built the brain of an aquaponics system. It is an outlet box with four outlets each of which is controlled by google calendar. It turns out that this Google calendar controlled outlet box has plenty of other applications beyond aquaponics.
Felix and I have planned our aquaponic system. We are using a steel wire rack as the base. We will have a 20 gallon fish tank with two 10 gallon (36″x18″x6″) grow beds for a 1:1 fish tank to plant bed ratio. We will use a Four outlet power relay module to control the pump, grow light and fish food. This relay module will the control center of the operation. With this we can control remotely when the plants are watered, receive light and when the fish are fed. We are currently in the process of procuring everything we need for the project.
Felix, Helen Marko and I are going to work on it the aquaponic farm.
BOM from the tutorial:
25mm polypropolene tank fitting
1 off. 25mm female threaded fitting
1 off. short length* ~100mm length of pvc pipe. note that this length is critical in determining the top level of the water during the flood cycle.
1 length off 50mm PvC pipe
1 off. 50mm Pvc endcap
90mm PVC pipe
90mm end cap
1 off. 25mm male threaded fitting
1 off. 25mm 90 deg elbows
2 off. short lengths of 25mm pvc pipe to join fittings
2 off. 25mm 90 deg elbows
1 off. 25mm ‘T’ fitting
1 off. 25mm female threaded adapter
2 off. 25mm threaded male to 19mm barbed hose fitting (poly propylene)
2 off. 25mm end caps
2 off. 25mm pvc pipe cut to 200mm (depends on width of your grow bed)
various short lengths of 25mm pvc pipe to join fittings
My three Halloween proposals are as such. I was initially leaning towards the piano neck tie. It would light up each key as if it were playing Clair de Lune by Debussy. Unfortunately, I do not know that song and I cannot play the piano. The fire hydrant is entertaining to think about, but I think it will attract the wrong kind of attention. Instead, I will be making the center one. It incorporates an infinity mirror apparatus that gives an impression that there is a hole going through the wearer’s chest.