Crops

15.04.2026 00:44:37

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 11.08 °C 18.56 % 12.9 °C 36.62 % M2 11.5 °C 24.12 % 12.9 °C 36.62 % M3 5.44 °C 26.5 % 12.9 °C 36.62 % M4 11.62 °C 23.92 % 4.28 °C 38.06 % 4.28 °C 38.06 % M5 11.5 °C 15.04 % 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 11.08 °C
Humidity 18.56 %
Nko 0 mg/kg
Pko 1 mg/kg
Kko 1 mg/kg
Vodivost 88 mS/m
pH 3.66
Salinity 48 mS/m
TDS 44
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -52 dBm

Malina2

Temperature 11.5 °C
Humidity 24.12 %
Nko 0 mg/kg
Pko 1 mg/kg
Kko 1 mg/kg
Vodivost 75 mS/m
pH 3.3
Salinity 41 mS/m
TDS 37
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -56 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 11.62 °C
Humidity 23.92 %
Nko 0 mg/kg
Pko 5 mg/kg
Kko 1 mg/kg
Vodivost 100 mS/m
pH 3.66
Salinity 55 mS/m
TDS 50
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -70 dBm

Malina5

Temperature 11.5 °C
Humidity 15.04 %
Nko 0 mg/kg
Pko 35 mg/kg
Kko 27 mg/kg
Vodivost 162 mS/m
pH 3.4
Salinity 89 mS/m
TDS 81
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -52 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 12.9 °C
Humidity 36.62 %
Nko 0 mg/kg
Pko 5 mg/kg
Kko 1 mg/kg
Vodivost 100 mS/m
pH 3
Salinity 55 mS/m
TDS 50
Illuminance 0 lx
Battery voltage 4.2 V
Panel voltage 0 V
Battery capacity 100 %
RSSI -60 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