In 2015 there are similar project of the smart farm that is growing vegetables without soil or you can call “hydroponics”, which can be grown in a limited area.
The method can control two thing are pH and temperature in the water.
The work will use Solenoid at a drop of water to adjust the pH and set Solenoid at two for separate work
- The first Solenoid will adjust pH when pH lower than before set, substance for adjust is lime mix with water.
- The second Solenoid will adjust when pH higher than before set, substance for adjust is Phosphoric acid in water.
Control temperature
If the temperature is too high, the plant may die. Therefore Nozzle to spray water and use Relay for controlling pump by determining the temperature > 30 (Pumps will run). From this project will see the plants can grow greater than common plants