Crops

05.09.2025 04:42:47

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 17.68 °C 33.76 % 17.94 °C 41.6 % M2 17.72 °C 27.7 % 17.94 °C 41.6 % M3 20.5 °C 37.96 % 17.94 °C 41.6 % M4 18.48 °C 27.88 % 20.8 °C 29.72 % 20.8 °C 29.72 % M5 16.6 °C 25.5 % 20.8 °C 29.72 % 20.8 °C 29.72 % M6 18.72 °C 30.38 % 20.8 °C 29.72 % 20.8 °C 29.72 % J1 18.1 °C 32.38 %

Malina1

Temperature 17.68 °C
Humidity 33.76 %
Nko 6 mg/kg
Pko 61 mg/kg
Kko 54 mg/kg
Vodivost 217 mS/m
pH 3
Salinity 119 mS/m
TDS 108
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -57 dBm

Malina2

Temperature 17.72 °C
Humidity 27.7 %
Nko 1 mg/kg
Pko 21 mg/kg
Kko 13 mg/kg
Vodivost 134 mS/m
pH 3.06
Salinity 73 mS/m
TDS 67
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -58 dBm

Malina3

Temperature 20.5 °C
Humidity 37.96 %
Nko 1 mg/kg
Pko 48 mg/kg
Kko 41 mg/kg
Vodivost 190 mS/m
pH 3
Salinity 104 mS/m
TDS 95
Illuminance 1497 lx
Battery voltage 3.64 V
Panel voltage 0 V
Battery capacity 53 %
RSSI -69 dBm

Malina4

Temperature 18.48 °C
Humidity 27.88 %
Nko 1 mg/kg
Pko 31 mg/kg
Kko 23 mg/kg
Vodivost 153 mS/m
pH 3.06
Salinity 84 mS/m
TDS 76
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -72 dBm

Malina5

Temperature 16.6 °C
Humidity 25.5 %
Nko 7 mg/kg
Pko 64 mg/kg
Kko 56 mg/kg
Vodivost 222 mS/m
pH 3
Salinity 122 mS/m
TDS 111
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -64 dBm

Malina6

Temperature 18.72 °C
Humidity 30.38 %
Nko 1 mg/kg
Pko 39 mg/kg
Kko 31 mg/kg
Vodivost 170 mS/m
pH 3
Salinity 93 mS/m
TDS 85
Illuminance 0 lx
Battery voltage 3.52 V
Panel voltage 0 V
Battery capacity 43 %
RSSI -61 dBm

Boruvka1

Temperature 17.94 °C
Humidity 41.6 %
Nko 4864 mg/kg
Pko 12 mg/kg
Kko 4 mg/kg
Vodivost 114 mS/m
pH 3
Salinity 62 mS/m
TDS 57
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -58 dBm

Boruvka2

Temperature 20.8 °C
Humidity 29.72 %
Nko 1 mg/kg
Pko 6 mg/kg
Kko 1 mg/kg
Vodivost 103 mS/m
pH 3
Salinity 56 mS/m
TDS 51
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -64 dBm

Jablone1

Temperature 18.1 °C
Humidity 32.38 %
Nko 2 mg/kg
Pko 52 mg/kg
Kko 44 mg/kg
Vodivost 197 mS/m
pH 3.18
Salinity 108 mS/m
TDS 98
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -68 dBm