Crops

18.12.2025 17:22:30

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.
33 W . m-2 B1 B2 B2 M1 3.3 °C 29.62 % -0.44 °C 19.66 % M2 -0.4 °C 22.92 % -0.44 °C 19.66 % M3 7.2 °C 36.66 % -0.44 °C 19.66 % M4 0.34 °C 23.92 % 4.28 °C 38.06 % 4.28 °C 38.06 % M5 10.1 °C 28.06 % 4.28 °C 38.06 % 4.28 °C 38.06 % M6 18.1 °C 40.34 % 4.28 °C 38.06 % 4.28 °C 38.06 % J1 14.22 °C 40.52 %

Malina1

Temperature 3.3 °C
Humidity 29.62 %
Nko 0 mg/kg
Pko 32.8 mg/kg
Kko 25 mg/kg
Vodivost 157.8 mS/m
pH 3
Salinity 86 mS/m
TDS 78.8
Illuminance 0 lx
Battery voltage 3.47 V
Panel voltage 0 V
Battery capacity 39 %
RSSI -62 dBm

Malina2

Temperature -0.4 °C
Humidity 22.92 %
Nko 0 mg/kg
Pko 0 mg/kg
Kko 0 mg/kg
Vodivost 20.4 mS/m
pH 3
Salinity 11 mS/m
TDS 10
Illuminance 3956 lx
Battery voltage 3.66 V
Panel voltage 3.59 V
Battery capacity 55 %
RSSI -59 dBm

Malina3

Temperature 7.2 °C
Humidity 36.66 %
Nko 0 mg/kg
Pko 30 mg/kg
Kko 22 mg/kg
Vodivost 152 mS/m
pH 3
Salinity 83 mS/m
TDS 76
Illuminance 3010 lx
Battery voltage 3 V
Panel voltage 3.64 V
Battery capacity 0 %
RSSI -70 dBm

Malina4

Temperature 0.34 °C
Humidity 23.92 %
Nko 0 mg/kg
Pko 0 mg/kg
Kko 0 mg/kg
Vodivost 46 mS/m
pH 3.04
Salinity 25 mS/m
TDS 23
Illuminance 4022 lx
Battery voltage 4.16 V
Panel voltage 3.99 V
Battery capacity 96 %
RSSI -63 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 -0.44 °C
Humidity 19.66 %
Nko 0 mg/kg
Pko 0 mg/kg
Kko 0 mg/kg
Vodivost 14 mS/m
pH 3
Salinity 7 mS/m
TDS 7
Illuminance 3935 lx
Battery voltage 4.15 V
Panel voltage 4.03 V
Battery capacity 96 %
RSSI -64 dBm

Boruvka2

Temperature 4.28 °C
Humidity 38.06 %
Nko 0 mg/kg
Pko 0 mg/kg
Kko 0 mg/kg
Vodivost 43 mS/m
pH 3
Salinity 23 mS/m
TDS 21
Illuminance 0 lx
Battery voltage 4.17 V
Panel voltage 0 V
Battery capacity 97 %
RSSI -57 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