Crops

22.10.2025 05:56:05

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.
0 W . m-2 B1 B2 B2 M1 10.3 °C 29.56 % 10.5 °C 49.16 % M2 10.3 °C 28.7 % 10.5 °C 49.16 % M3 33.44 °C 39.44 % 10.5 °C 49.16 % M4 11 °C 35.74 % 10.98 °C 35.06 % 10.98 °C 35.06 % M5 10.1 °C 28.06 % 10.98 °C 35.06 % 10.98 °C 35.06 % M6 18.1 °C 40.34 % 10.98 °C 35.06 % 10.98 °C 35.06 % J1 14.22 °C 40.52 %

Malina1

Temperature 10.3 °C
Humidity 29.56 %
Nko 0 mg/kg
Pko 36 mg/kg
Kko 28.6 mg/kg
Vodivost 164.6 mS/m
pH 3
Salinity 90 mS/m
TDS 82
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -57 dBm

Malina2

Temperature 10.3 °C
Humidity 28.7 %
Nko 0 mg/kg
Pko 17 mg/kg
Kko 9 mg/kg
Vodivost 124 mS/m
pH 3
Salinity 68 mS/m
TDS 62
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -59 dBm

Malina3

Temperature 33.44 °C
Humidity 39.44 %
Nko 0 mg/kg
Pko 44 mg/kg
Kko 36 mg/kg
Vodivost 181 mS/m
pH 3
Salinity 99 mS/m
TDS 90
Illuminance 1695 lx
Battery voltage 3.83 V
Panel voltage 0 V
Battery capacity 68 %
RSSI -66 dBm

Malina4

Temperature 11 °C
Humidity 35.74 %
Nko 0 mg/kg
Pko 27 mg/kg
Kko 19 mg/kg
Vodivost 145 mS/m
pH 3
Salinity 79 mS/m
TDS 72
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -77 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 10.5 °C
Humidity 49.16 %
Nko 0 mg/kg
Pko 7 mg/kg
Kko 0 mg/kg
Vodivost 104 mS/m
pH 3
Salinity 57 mS/m
TDS 52
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -49 dBm

Boruvka2

Temperature 10.98 °C
Humidity 35.06 %
Nko 0 mg/kg
Pko 0 mg/kg
Kko 0 mg/kg
Vodivost 59 mS/m
pH 3
Salinity 32 mS/m
TDS 29
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -59 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