hi i am zain from indonesia, i have a problem to measure the soil nutrients, my project abaout plant care but i dont know what kind sensor can measure the soil nutrients,
this is one of example plant care from Xiaomi
from the xiaomi smart flower care there is only one sensor to measure the soil moisture and soil nutrient,
can anyone tell me how to do that? or what sensor can i use for my project to measure the soil nutrient?