Crops

05.07.2025 13:05:53

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.
1140.2 W . m-2 B1 B2 B2 M1 19.5 °C 39.88 % 22.28 °C 38.44 % M2 19.56 °C 31.88 % 22.28 °C 38.44 % M3 21.8 °C 39.9 % 22.28 °C 38.44 % M4 20.5 °C 36.38 % 24.1 °C 33.96 % 24.1 °C 33.96 % M5 20 °C 21.5 % 24.1 °C 33.96 % 24.1 °C 33.96 % M6 20.32 °C 35.94 % 24.1 °C 33.96 % 24.1 °C 33.96 % J1 19.9 °C 31.48 %

Malina1

Temperature 19.5 °C
Humidity 39.88 %
Nko 14 mg/kg
Pko 80 mg/kg
Kko 73 mg/kg
Vodivost 256 mS/m
pH 3.04
Salinity 140 mS/m
TDS 128
Illuminance 3761 lx
Battery voltage 4.2 V
Panel voltage 6.58 V
Battery capacity 100 %
RSSI -64 dBm

Malina2

Temperature 19.56 °C
Humidity 31.88 %
Nko 1 mg/kg
Pko 35 mg/kg
Kko 27.8 mg/kg
Vodivost 162.8 mS/m
pH 3
Salinity 89 mS/m
TDS 81
Illuminance 4082 lx
Battery voltage 4.2 V
Panel voltage 6.81 V
Battery capacity 100 %
RSSI -61 dBm

Malina3

Temperature 21.8 °C
Humidity 39.9 %
Nko 3 mg/kg
Pko 53 mg/kg
Kko 45 mg/kg
Vodivost 199 mS/m
pH 3
Salinity 109 mS/m
TDS 99
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 6.87 V
Battery capacity 100 %
RSSI -62 dBm

Malina4

Temperature 20.5 °C
Humidity 36.38 %
Nko 1 mg/kg
Pko 45.4 mg/kg
Kko 38 mg/kg
Vodivost 184.4 mS/m
pH 3
Salinity 101 mS/m
TDS 92
Illuminance 4095 lx
Battery voltage 4.2 V
Panel voltage 6.16 V
Battery capacity 100 %
RSSI -71 dBm

Malina5

Temperature 20 °C
Humidity 21.5 %
Nko 7 mg/kg
Pko 63 mg/kg
Kko 55 mg/kg
Vodivost 220 mS/m
pH 3
Salinity 121 mS/m
TDS 110
Illuminance 3808 lx
Battery voltage 4.2 V
Panel voltage 4.33 V
Battery capacity 100 %
RSSI -54 dBm

Malina6

Temperature 20.32 °C
Humidity 35.94 %
Nko 2 mg/kg
Pko 52 mg/kg
Kko 45 mg/kg
Vodivost 198 mS/m
pH 3
Salinity 108 mS/m
TDS 99
Illuminance 3790 lx
Battery voltage 4.2 V
Panel voltage 4.28 V
Battery capacity 100 %
RSSI -80 dBm

Boruvka1

Temperature 22.28 °C
Humidity 38.44 %
Nko 4864 mg/kg
Pko 27 mg/kg
Kko 19 mg/kg
Vodivost 146 mS/m
pH 3
Salinity 80 mS/m
TDS 73
Illuminance 4095 lx
Battery voltage 3.78 V
Panel voltage 5.91 V
Battery capacity 64 %
RSSI -69 dBm

Boruvka2

Temperature 24.1 °C
Humidity 33.96 %
Nko 2 mg/kg
Pko 24 mg/kg
Kko 16 mg/kg
Vodivost 139 mS/m
pH 3
Salinity 76 mS/m
TDS 69
Illuminance 4093 lx
Battery voltage 4.2 V
Panel voltage 6.34 V
Battery capacity 100 %
RSSI -61 dBm

Jablone1

Temperature 19.9 °C
Humidity 31.48 %
Nko 2 mg/kg
Pko 52 mg/kg
Kko 44 mg/kg
Vodivost 197 mS/m
pH 3
Salinity 108 mS/m
TDS 98
Illuminance 4079 lx
Battery voltage 4.2 V
Panel voltage 4.38 V
Battery capacity 100 %
RSSI -65 dBm