LoRa module
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Protocol: LoRa "raw". P2P links (node to node).
Model: Semtech SX1272
Frequencies available: 860-1000 MHz, fits both 868 (Europe) and 900 MHz (USA) ISM bands
Max TX power: 14 dBm
Sensitivity: -137 dBm
Range:
Line of Sight: 21+ km / 13.4+ miles (LoS and Fresnel zone clearance)
Non Line of Sight: 2+ km / 1.2+ miles (nLoS going through buildings, urban environment)
Antenna:
868 / 900 MHz: 4.5 dBi
Connector: RPSMA
Encryption: AES 128/192/256b (performed by Waspmote API)
Control Signal: RSSI
Topology: Star
Receiver/Central node: Special Gateway LoRa (SPI) or another Waspmote unit
This radio module provides an optimum range performance, thanks to the excellent receiver sensitivity that the LoRa™ technology offers. Besides, Libelium developed a library which enables addressable, reliable and robust communications with ACK, re-tries or time-outs strategies.
The user can set any frequency in the 868 and 900 MHz bands, with pre-defined channels. The use of this module is allowed in virtually any country.
Encryption is implemented in the application level, thanks to the Waspmote\'s AES library. The payload inside the wireless packet is encrypted so only nodes knowing the key can read the content. The encryption activation is as simple as running one of our LoRa with AES encryption examples.
The topology for this type of network is a star topology, as the nodes can establish point-to-point connections with brother nodes, normally with the central one.
Related API libraries: WaspSX1272.h, WaspSX1272.cpp All information about programming the LoRa module can be found in the . All the documentation is located in the in the Libelium website.
