Crops

01.03.2026 00:24:46

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.
140 W . m-2 B1 B2 B2 M1 5.2 °C 27.32 % 2.94 °C 41.12 % M2 2.94 °C 28.96 % 2.94 °C 41.12 % M3 5.44 °C 26.5 % 2.94 °C 41.12 % M4 3.5 °C 33.06 % 4.28 °C 38.06 % 4.28 °C 38.06 % M5 5.04 °C 20.06 % 4.28 °C 38.06 % 4.28 °C 38.06 % M6 8.86 °C 38.54 % 4.28 °C 38.06 % 4.28 °C 38.06 % J1 14.22 °C 40.52 %

Malina1

Temperature 5.2 °C
Humidity 27.32 %
Nko 0 mg/kg
Pko 22 mg/kg
Kko 14 mg/kg
Vodivost 135 mS/m
pH 3
Salinity 74 mS/m
TDS 67
Illuminance 33 lx
Battery voltage 3 V
Panel voltage 0 V
Battery capacity 0 %
RSSI -54 dBm

Malina2

Temperature 2.94 °C
Humidity 28.96 %
Nko 0 mg/kg
Pko 2 mg/kg
Kko 1 mg/kg
Vodivost 93 mS/m
pH 3.38
Salinity 51 mS/m
TDS 46
Illuminance 4085 lx
Battery voltage 4.2 V
Panel voltage 4.2 V
Battery capacity 100 %
RSSI -54 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 4.45 V
Battery capacity 100 %
RSSI -69 dBm

Malina4

Temperature 3.5 °C
Humidity 33.06 %
Nko 0 mg/kg
Pko 9 mg/kg
Kko 1 mg/kg
Vodivost 109 mS/m
pH 3.22
Salinity 59 mS/m
TDS 54
Illuminance 4085 lx
Battery voltage 4.2 V
Panel voltage 4.34 V
Battery capacity 100 %
RSSI -64 dBm

Malina5

Temperature 5.04 °C
Humidity 20.06 %
Nko 0 mg/kg
Pko 42 mg/kg
Kko 34 mg/kg
Vodivost 177 mS/m
pH 3.2
Salinity 97 mS/m
TDS 88
Illuminance 0 lx
Battery voltage 3.75 V
Panel voltage 0 V
Battery capacity 62 %
RSSI -47 dBm

Malina6

Temperature 8.86 °C
Humidity 38.54 %
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 4094 lx
Battery voltage 3 V
Panel voltage 3.59 V
Battery capacity 0 %
RSSI -56 dBm

Boruvka1

Temperature 2.94 °C
Humidity 41.12 %
Nko 0 mg/kg
Pko 2 mg/kg
Kko 1 mg/kg
Vodivost 92.8 mS/m
pH 3
Salinity 50.8 mS/m
TDS 46
Illuminance 4094 lx
Battery voltage 4.2 V
Panel voltage 4.18 V
Battery capacity 100 %
RSSI -66 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