- Sensor nodes are used to collect environmental parameters and send the collected data to the main node.

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- Our IoT system uses LoRa communications between the main node and sensor nodes. 

- Types of sensor nodes: 
  + Temperature and Humidity sensor
  + Illuminance sensor
  + CO2 concentration sensor
  + Soil moisture sensor

  + Soil pH sensor
  + Water pH sensor

  + Salinity sensor
  + Other sensors..​.

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