Crops

22.03.2026 13:02:38

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.
744.8 W . m-2 B1 B2 B2 M1 11 °C 21.96 % 6.74 °C 39.36 % M2 10.46 °C 27.16 % 6.74 °C 39.36 % M3 5.44 °C 26.5 % 6.74 °C 39.36 % M4 9.44 °C 26.94 % 4.28 °C 38.06 % 4.28 °C 38.06 % M5 9.5 °C 18.86 % 4.28 °C 38.06 % 4.28 °C 38.06 % M6 7.16 °C 37.76 % 4.28 °C 38.06 % 4.28 °C 38.06 % J1 14.22 °C 40.52 %

Malina1

Temperature 11 °C
Humidity 21.96 %
Nko 0 mg/kg
Pko 18 mg/kg
Kko 10 mg/kg
Vodivost 126 mS/m
pH 3.36
Salinity 69 mS/m
TDS 63
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 4.32 V
Battery capacity 100 %
RSSI -50 dBm

Malina2

Temperature 10.46 °C
Humidity 27.16 %
Nko 0 mg/kg
Pko 6 mg/kg
Kko 1 mg/kg
Vodivost 103 mS/m
pH 3.12
Salinity 56 mS/m
TDS 51
Illuminance 4081 lx
Battery voltage 4.2 V
Panel voltage 6.56 V
Battery capacity 100 %
RSSI -50 dBm

Malina3

Temperature 5.44 °C
Humidity 26.5 %
Nko 0 mg/kg
Pko 1 mg/kg
Kko 0 mg/kg
Vodivost 73 mS/m
pH 3
Salinity 40 mS/m
TDS 36
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 7.4 V
Battery capacity 100 %
RSSI -64 dBm

Malina4

Temperature 9.44 °C
Humidity 26.94 %
Nko 0 mg/kg
Pko 11 mg/kg
Kko 3 mg/kg
Vodivost 114 mS/m
pH 3.12
Salinity 62 mS/m
TDS 56
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 7.06 V
Battery capacity 100 %
RSSI -72 dBm

Malina5

Temperature 9.5 °C
Humidity 18.86 %
Nko 0 mg/kg
Pko 39 mg/kg
Kko 31 mg/kg
Vodivost 171 mS/m
pH 3
Salinity 94 mS/m
TDS 85
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 6.66 V
Battery capacity 100 %
RSSI -53 dBm

Malina6

Temperature 7.16 °C
Humidity 37.76 %
Nko 0 mg/kg
Pko 25 mg/kg
Kko 17 mg/kg
Vodivost 142 mS/m
pH 3
Salinity 78 mS/m
TDS 71
Illuminance 4093 lx
Battery voltage 3 V
Panel voltage 1.53 V
Battery capacity 0 %
RSSI -53 dBm

Boruvka1

Temperature 6.74 °C
Humidity 39.36 %
Nko 0 mg/kg
Pko 1 mg/kg
Kko 1 mg/kg
Vodivost 91 mS/m
pH 3
Salinity 50 mS/m
TDS 45
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 4.18 V
Battery capacity 100 %
RSSI -62 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