Crops

13.12.2025 08:03:12

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 3.96 °C 32.28 % 4.08 °C 54.84 % M2 4.1 °C 38 % 4.08 °C 54.84 % M3 8.3 °C 39.06 % 4.08 °C 54.84 % M4 4.92 °C 43.8 % 4.4 °C 38.28 % 4.4 °C 38.28 % M5 10.1 °C 28.06 % 4.4 °C 38.28 % 4.4 °C 38.28 % M6 18.1 °C 40.34 % 4.4 °C 38.28 % 4.4 °C 38.28 % J1 14.22 °C 40.52 %

Malina1

Temperature 3.96 °C
Humidity 32.28 %
Nko 0 mg/kg
Pko 34 mg/kg
Kko 27 mg/kg
Vodivost 161 mS/m
pH 3
Salinity 88 mS/m
TDS 80
Illuminance 2513 lx
Battery voltage 3.6 V
Panel voltage 3.29 V
Battery capacity 49 %
RSSI -61 dBm

Malina2

Temperature 4.1 °C
Humidity 38 %
Nko 0 mg/kg
Pko 20 mg/kg
Kko 12 mg/kg
Vodivost 132 mS/m
pH 3
Salinity 72 mS/m
TDS 66
Illuminance 2588 lx
Battery voltage 4.01 V
Panel voltage 3.68 V
Battery capacity 84 %
RSSI -56 dBm

Malina3

Temperature 8.3 °C
Humidity 39.06 %
Nko 0 mg/kg
Pko 32 mg/kg
Kko 25 mg/kg
Vodivost 157 mS/m
pH 3
Salinity 86 mS/m
TDS 78
Illuminance 2812 lx
Battery voltage 3.2 V
Panel voltage 3.62 V
Battery capacity 16 %
RSSI -70 dBm

Malina4

Temperature 4.92 °C
Humidity 43.8 %
Nko 0 mg/kg
Pko 26 mg/kg
Kko 18 mg/kg
Vodivost 144 mS/m
pH 3
Salinity 79 mS/m
TDS 72
Illuminance 2809 lx
Battery voltage 4.2 V
Panel voltage 4.13 V
Battery capacity 100 %
RSSI -75 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 4.08 °C
Humidity 54.84 %
Nko 0 mg/kg
Pko 5 mg/kg
Kko 1 mg/kg
Vodivost 101 mS/m
pH 3
Salinity 55 mS/m
TDS 50
Illuminance 3108 lx
Battery voltage 4.2 V
Panel voltage 4.08 V
Battery capacity 100 %
RSSI -59 dBm

Boruvka2

Temperature 4.4 °C
Humidity 38.28 %
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 3202 lx
Battery voltage 4.2 V
Panel voltage 4.21 V
Battery capacity 100 %
RSSI -56 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