A versatile, stand-alone system for a screen-printed, soil-sensing array for Precision Agriculture

This paper presents a low-cost, versatile, stand-alone, soil quality monitoring system for Precision Agriculture based on a screen-printed soil-sensing array. The electronic system consists of three main modules, the power module, the control-communications module and the sensor interface module. It is battery-powered, recharged through a solar panel or through an AC power supply. The electronic system entails a pH sensor, a conductivity sensor, a platinum resistance thermometer and a dissolved oxygen sensor. However, the system can accommodate other sensors based on the same operation, through simple software re-calibration. It is compatible with Bluetooth, WiFi and LoRa communication technologies.