I have a project. In that, I want to measure soil nutrients like Nitrogen, Phosphorus, Potassium. So I am searching sensor those measure soil nutrients like Nitrogen, Phosphorus, Potassium. I searched on internet but I didn't get any information.
please help How do I measure soil nutrients like Nitrogen, Phosphorus, Potassium with help of Arduino.
No such sensor for Arduino use.
You obviously didn't search the forum (or didn't search it well)... this question comes up every few months or so. The answer hasn't changed.