Crops

10.05.2026 07:14:39

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.
53 W . m-2 B1 B2 B2 M1 11.3 °C 50.1 % 11.1 °C 41.9 % M2 13.2 °C 44.4 % 11.1 °C 41.9 % M3 0 °C 0 % 11.1 °C 41.9 % M4 11.6 °C 49.8 % 18.8 °C 26.38 % 18.8 °C 26.38 % M5 12 °C 36 % 18.8 °C 26.38 % 18.8 °C 26.38 % M6 15.5 °C 44.82 % 18.8 °C 26.38 % 18.8 °C 26.38 % J1 12.7 °C 38.22 %

Malina1

Temperature 11.3 °C
Humidity 50.1 %
Nko 22 mg/kg
Pko 98 mg/kg
Kko 90.6 mg/kg
Vodivost 292.6 mS/m
pH 3
Salinity 160.6 mS/m
TDS 146
Illuminance 4075 lx
Battery voltage 4.2 V
Panel voltage 4.16 V
Battery capacity 100 %
RSSI -50 dBm

Malina2

Temperature 13.2 °C
Humidity 44.4 %
Nko 13.8 mg/kg
Pko 78 mg/kg
Kko 70.8 mg/kg
Vodivost 251.8 mS/m
pH 3.24
Salinity 138 mS/m
TDS 125.8
Illuminance 4091 lx
Battery voltage 4.2 V
Panel voltage 4.32 V
Battery capacity 100 %
RSSI -49 dBm

Malina3

Temperature 0 °C
Humidity 0 %
Nko 0 mg/kg
Pko 0 mg/kg
Kko 0 mg/kg
Vodivost 0 mS/m
pH 0
Salinity 0 mS/m
TDS 0
Illuminance 4055 lx
Battery voltage 4.2 V
Panel voltage 4.42 V
Battery capacity 100 %
RSSI -57 dBm

Malina4

Temperature 11.6 °C
Humidity 49.8 %
Nko 10 mg/kg
Pko 70 mg/kg
Kko 62 mg/kg
Vodivost 234 mS/m
pH 3.12
Salinity 128 mS/m
TDS 117
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 4.4 V
Battery capacity 100 %
RSSI -64 dBm

Malina5

Temperature 12 °C
Humidity 36 %
Nko 16 mg/kg
Pko 84 mg/kg
Kko 77 mg/kg
Vodivost 264 mS/m
pH 3.28
Salinity 145 mS/m
TDS 132
Illuminance 4043 lx
Battery voltage 4.2 V
Panel voltage 4.31 V
Battery capacity 100 %
RSSI -51 dBm

Malina6

Temperature 15.5 °C
Humidity 44.82 %
Nko 1 mg/kg
Pko 46.4 mg/kg
Kko 39 mg/kg
Vodivost 186.4 mS/m
pH 3
Salinity 102 mS/m
TDS 93
Illuminance 4095 lx
Battery voltage 3 V
Panel voltage 7.22 V
Battery capacity 0 %
RSSI -45 dBm

Boruvka1

Temperature 11.1 °C
Humidity 41.9 %
Nko 0 mg/kg
Pko 23 mg/kg
Kko 15 mg/kg
Vodivost 138 mS/m
pH 3
Salinity 75 mS/m
TDS 69
Illuminance 4066 lx
Battery voltage 4.2 V
Panel voltage 4.3 V
Battery capacity 100 %
RSSI -52 dBm

Boruvka2

Temperature 18.8 °C
Humidity 26.38 %
Nko 0 mg/kg
Pko 7 mg/kg
Kko 1 mg/kg
Vodivost 104 mS/m
pH 3.06
Salinity 57 mS/m
TDS 52
Illuminance 4095 lx
Battery voltage 3.9 V
Panel voltage 7.01 V
Battery capacity 75 %
RSSI -63 dBm

Jablone1

Temperature 12.7 °C
Humidity 38.22 %
Nko 26 mg/kg
Pko 106 mg/kg
Kko 99 mg/kg
Vodivost 309.6 mS/m
pH 3
Salinity 169.6 mS/m
TDS 154.6
Illuminance 3774 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -62 dBm