Basically, there is a weight on one end connected to a “loading dock” where the fertilizer trickles from above. When the balance is even, a circuit is completed with the balance being a switch. This then sends information to the microcontroller to turn a servo connected to the platform on which the fertilizer was dropped. The platform flips and the fertilizer falls below to be dissolved into a water-fertilizer mixture with a motor-magnet mechanism. (Figured out I have to buy water-soluble no pellet fertilizer, so I think it will come in powder form already). The fertilizer and water solution will also be connected to a water mechanism for adding water if the system gets off.
How:
Ultrasonic sensor states the volume of the water through the height of the water. Salinity testers tell percentage of fertilizer in water. Use that percentage to find amount of salt and then calculate how much is needed. Finally, you add salt in grams (with the balance mechanism) until you get a desired value.
New Information about Project: Over the weekend was doing energy calculations and very bad addition, but I did figure out my farm will be at least 350 pounds…. I think I will be afraid to stand next to it because my frame is going to suck with the current design(lots of duck tape). I will need to make my own solar panels to help save on costs. Waiting for the parts and seeds to find out how big/ specifications of the farm) Also going to be finalizing my design(see next week for the pictures/posts)
See attachments for picture.
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