Crops

06.11.2025 09:34:29

The goal is to create an IoT device for monitoring soil properties and early correction of unsuitable parameters for its growth. We assume the possibility to dose watering and dosing of fertilizers based on information from the sensor.
Soil foto
Soil sonda
Soil foto
The measurement system is built on the basis of a five-electrode sensor of soil properties, which is connected to the ESP processor via the RS485 bus. The measuring system is powered by a photovoltaic panel and the accumulator is charged for device operation. Data is sent via WiFi to the database. The sensor measures temperature, humidity, content of nitrogen, phosphorus and potassium components, soil conductivity, pH, salinity, as a supplement for IoT devices it also sends battery voltage, PV panel voltage, battery capacity and WiFi signal.
178.2 W . m-2 B1 B2 B2 M1 6.34 °C 28.78 % 5.48 °C 57.94 % M2 6.1 °C 38.58 % 5.48 °C 57.94 % M3 32.68 °C 36.68 % 5.48 °C 57.94 % M4 7.2 °C 43.48 % 6 °C 40.2 % 6 °C 40.2 % M5 10.1 °C 28.06 % 6 °C 40.2 % 6 °C 40.2 % M6 18.1 °C 40.34 % 6 °C 40.2 % 6 °C 40.2 % J1 14.22 °C 40.52 %

Malina1

Temperature 6.34 °C
Humidity 28.78 %
Nko 0 mg/kg
Pko 32 mg/kg
Kko 24 mg/kg
Vodivost 156 mS/m
pH 3
Salinity 85 mS/m
TDS 78
Illuminance 3942 lx
Battery voltage 4.1 V
Panel voltage 4.05 V
Battery capacity 91 %
RSSI -62 dBm

Malina2

Temperature 6.1 °C
Humidity 38.58 %
Nko 0 mg/kg
Pko 22 mg/kg
Kko 14 mg/kg
Vodivost 135 mS/m
pH 3
Salinity 74 mS/m
TDS 67
Illuminance 3901 lx
Battery voltage 4.2 V
Panel voltage 4.22 V
Battery capacity 100 %
RSSI -57 dBm

Malina3

Temperature 32.68 °C
Humidity 36.68 %
Nko 1 mg/kg
Pko 44 mg/kg
Kko 36 mg/kg
Vodivost 180 mS/m
pH 3
Salinity 99 mS/m
TDS 90
Illuminance 4095 lx
Battery voltage 3.86 V
Panel voltage 3.84 V
Battery capacity 71 %
RSSI -69 dBm

Malina4

Temperature 7.2 °C
Humidity 43.48 %
Nko 0 mg/kg
Pko 29 mg/kg
Kko 21 mg/kg
Vodivost 149 mS/m
pH 3
Salinity 81 mS/m
TDS 74
Illuminance 4071 lx
Battery voltage 4.2 V
Panel voltage 4.45 V
Battery capacity 100 %
RSSI -74 dBm

Malina5

Temperature 10.1 °C
Humidity 28.06 %
Nko 6 mg/kg
Pko 59 mg/kg
Kko 52 mg/kg
Vodivost 212 mS/m
pH 3.3
Salinity 117 mS/m
TDS 106
Illuminance 0 lx
Battery voltage 3.31 V
Panel voltage 0 V
Battery capacity 26 %
RSSI -60 dBm

Malina6

Temperature 18.1 °C
Humidity 40.34 %
Nko 2 mg/kg
Pko 51 mg/kg
Kko 43 mg/kg
Vodivost 195 mS/m
pH 3
Salinity 107 mS/m
TDS 97
Illuminance 2032 lx
Battery voltage 3 V
Panel voltage 3.41 V
Battery capacity 0 %
RSSI -61 dBm

Boruvka1

Temperature 5.48 °C
Humidity 57.94 %
Nko 0 mg/kg
Pko 4 mg/kg
Kko 1 mg/kg
Vodivost 98 mS/m
pH 3
Salinity 53 mS/m
TDS 49
Illuminance 3990 lx
Battery voltage 4.2 V
Panel voltage 4.33 V
Battery capacity 100 %
RSSI -50 dBm

Boruvka2

Temperature 6 °C
Humidity 40.2 %
Nko 0 mg/kg
Pko 0 mg/kg
Kko 0 mg/kg
Vodivost 46 mS/m
pH 3
Salinity 25 mS/m
TDS 23
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 4.23 V
Battery capacity 100 %
RSSI -58 dBm

Jablone1

Temperature 14.22 °C
Humidity 40.52 %
Nko 10 mg/kg
Pko 71 mg/kg
Kko 63 mg/kg
Vodivost 236 mS/m
pH 3.22
Salinity 129 mS/m
TDS 118
Illuminance 0 lx
Battery voltage 4.03 V
Panel voltage 0 V
Battery capacity 85 %
RSSI -69 dBm