LoraWanNode

Project LoraWanNode
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Description of how to set up an Arduino Pro Mini and an HopeRF RFM95 to create a LoraWAN node
Status	Initializing
Contact	bertrik
Last Update	2016-04-03

Introduction

This page describes the steps needed to create a simple LoraWAN node for the-things-network.

I've tested this on the TTN in the city of Utrecht.

Hardware

The hardware I've used is:

• a HopeRF RFM95 module
• an Arduino mini pro, 8MHz/3.3V
• a CP2104-based serial-USB converter

The HopeRF RFM95 module is connected to the Arduino as follows:

• pin VCC to arduino Vcc pin (3.3V)
• pin GND to arduino Gnd pin
• pin NSS to arduino pin D10
• pin SCK to arduino pin D13
• pin MOSI to arduino pin D11
• pin MISO to arduino pin D12
• pin DIO0 to arduino pin D4
• pin DIO1 to arduino pin D5
• pin DIO2 to arduino pin D7

Software

Tools

• Arduino IDE 1.6.8

Libraries

I've used this version of the LoRa LMIC library: https://github.com/things4u/LoRa-LMIC-1.51.git

Node firmware

The firmware used on the arduino is the nano-lmic-v1.51-F.ino from the examples directory of the LoRa LMIC library.

Additionally I made the following changes:

• in the library: replaced all instances of "arduino.h" to "Arduino.h" (capital "A")
• changed the device address ("DevAddr") in the .ino file
• changed the payload string in function do_send in the .ino file