Simple LoRaWAN Packet Generator
Utilising elements from SemTech's LoRaWAN library, this library encodes LoRaWAN packets ready for sending using the radio of your choice.
If you wish to use a RFM95W or similar radio, make sure to have the arduino-LoRa library installed.
Download from here: https://github.com/sandeepmistry/arduino-LoRa
See examples/transmission_test for an example.