how do i read data from soil npk senosr which is rs485 device. Any source code,pls?
Did you have a particular sensor in mind?
If so, could you imagine that posting a link to the product page might be informative and useful?
Consider spending a few moments with the "How to get the best out of this forum" sticky at the head of every forum topic.
Did you happen to enter “arduino rs485 soil moisture sensor” into your favorite internet search engine and not get any results?
Hi, here is a very nice article about the NPK Sensor. There are some Chinese vendors who manufacture the sensor. You can easily interface the sensor with Arduino or any other microcontroller using the Modbus RS485. Here is a very nice article, you can follow it: https://how2electronics.com/measure-soil-nutrient-using-arduino-soil-npk-sensor/