The soil moisture sensor module , built around the LM393 comparator, gives an active-low (L) level output when the soil is dry (determined by a pre-setted threshold value). This digital output (wet ...

Arduino soil moisture sensor schematic. Project source code. const int VAL_PROBE = 0; // Analog pin 0 const int MOISTURE_LEVEL = 250; ... I love all about electronics, circuit diagrams and crazy ...

Wire up this Arduino-based sensor and save them. ... Wiring the Hardware. Plant Sensor Diagram ... My soil-moisture reading was in the low 700s in soil that had around 30 percent moisture ...