Npk soil concentration

araj60988 · June 25, 2019, 5:45am

how to measure npk soil concentration conductivity using bolt device.

pankajkumar.p · June 25, 2019, 11:57am

What sensor are you using?

araj60988 · June 26, 2019, 1:29pm

color sensor…

pankajkumar.p · June 27, 2019, 5:26am

What interface/protocol does it use? As in SPI, UART, I2C,etc.