As part of my research and project proposal, I was required to prove my concept would work.I did this by collecting an array of fruit/vegetables, juiced, and set them in resin to see which reacted to UV light. The most successful were celery, tomato and the most effective, turmeric.
I then programmed the moisture sensor and the Arduino. When the moisture level was below 80, the LED light would flash, indicating the plant needed water.
After this experimental stage, I had the help of fellow classmates Jacob Peterson and Toni Manyimo to make this idea come to life.