Crops

13.10.2026 11:04:36

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.
417.2 W . m-2 B1 B2 B2 M1 9.2 °C 37.88 % 7.16 °C 31.72 % M2 18.3 °C 44.1 % 7.16 °C 31.72 % M3 0 °C 0 % 7.16 °C 31.72 % M4 9.8 °C 35.96 % 18.8 °C 26.38 % 18.8 °C 26.38 % M5 13.9 °C 35.86 % 18.8 °C 26.38 % 18.8 °C 26.38 % M6 10.1 °C 26.6 % 18.8 °C 26.38 % 18.8 °C 26.38 % J1 17.4 °C 17.22 %

Malina1

Temperature 9.2 °C
Humidity 37.88 %
Nko 1 mg/kg
Pko 47 mg/kg
Kko 40 mg/kg
Vodivost 188 mS/m
pH 3.12
Salinity 103 mS/m
TDS 94
Illuminance 4095 lx
Battery voltage 3.92 V
Panel voltage 3.87 V
Battery capacity 76 %
RSSI -49 dBm

Malina2

Temperature 18.3 °C
Humidity 44.1 %
Nko 25 mg/kg
Pko 105 mg/kg
Kko 98 mg/kg
Vodivost 308 mS/m
pH 3.3
Salinity 169 mS/m
TDS 154
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -54 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 4091 lx
Battery voltage 4.2 V
Panel voltage 4.34 V
Battery capacity 100 %
RSSI -55 dBm

Malina4

Temperature 9.8 °C
Humidity 35.96 %
Nko 1 mg/kg
Pko 48 mg/kg
Kko 40 mg/kg
Vodivost 189 mS/m
pH 3
Salinity 103 mS/m
TDS 94
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 4.33 V
Battery capacity 100 %
RSSI -65 dBm

Malina5

Temperature 13.9 °C
Humidity 35.86 %
Nko 18 mg/kg
Pko 87 mg/kg
Kko 80 mg/kg
Vodivost 271 mS/m
pH 3.32
Salinity 149 mS/m
TDS 135
Illuminance 3194 lx
Battery voltage 4.19 V
Panel voltage 4.04 V
Battery capacity 98 %
RSSI -50 dBm

Malina6

Temperature 10.1 °C
Humidity 26.6 %
Nko 1 mg/kg
Pko 20 mg/kg
Kko 12 mg/kg
Vodivost 132 mS/m
pH 3
Salinity 72 mS/m
TDS 66
Illuminance 4095 lx
Battery voltage 3.48 V
Panel voltage 3.75 V
Battery capacity 39 %
RSSI -57 dBm

Boruvka1

Temperature 7.16 °C
Humidity 31.72 %
Nko 3 mg/kg
Pko 12 mg/kg
Kko 4 mg/kg
Vodivost 115 mS/m
pH 3
Salinity 63 mS/m
TDS 57
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 4.21 V
Battery capacity 100 %
RSSI -63 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 17.4 °C
Humidity 17.22 %
Nko 1 mg/kg
Pko 1 mg/kg
Kko 1 mg/kg
Vodivost 37 mS/m
pH 3.48
Salinity 20 mS/m
TDS 18
Illuminance 3698 lx
Battery voltage 3.77 V
Panel voltage 0 V
Battery capacity 64 %
RSSI -62 dBm