The NPK sensor doesn't change its value to 255mg

[pedrotfx]

Hi,
When i was receiving this value i realize that the default baud of my device was 4800, not 9600. I also had to chang many other things....

MAX485 TTL to RS-485 Modules for soil NPK sensor

Hi folks, After diging codes and checking my supplyers manual i had to change the original code found on internet regarding this sensor. My hardware came in 4800 baud as default, so, i had to fix this, also i bought a serial to rs485 adaptor so i could check data on computer and change baud default to 9600. The request message to sensor is diferent on my npk sensor, so, one more fix, after sending request i had to insert a delay to get a proper result from sensor, some times responses came wit…