Difference between revisions of "LoraWanNode"
| Line 12: | Line 12: | ||
It doesn't currently contain any new work, it just describes the steps I've done to use existing code to get a LoraWAN node to work with a LoraWAN network. | It doesn't currently contain any new work, it just describes the steps I've done to use existing code to get a LoraWAN node to work with a LoraWAN network. | ||
| − | I've tested this successfully on the TTN in the city of Utrecht. | + | I've tested this successfully on the-things-network (TTN) in the city of Utrecht. |
| + | The gateways picking up the signal from the node were approximately 1.5 km away. | ||
Some of the messages received by the TTN: http://thethingsnetwork.org/api/v0/nodes/19740823 | Some of the messages received by the TTN: http://thethingsnetwork.org/api/v0/nodes/19740823 | ||
| Line 20: | Line 21: | ||
On the TTN side, you can go to http://thethingsnetwork.org/api/v0/nodes/YOUR_DEVICE_ID | On the TTN side, you can go to http://thethingsnetwork.org/api/v0/nodes/YOUR_DEVICE_ID | ||
| − | where you should see the content of the message you just sent, along with information about the particular gateway that received your signal, | + | where you should see the content of the message you just sent, along with information about the particular gateway that received your signal, received signal strength and with what settings (bandwidth, spreading factor) your packet was received. |
== Hardware == | == Hardware == | ||
| Line 28: | Line 29: | ||
* a CP2104-based USB-serial converter | * a CP2104-based USB-serial converter | ||
| − | The HopeRF RFM95 module is connected to the Arduino as follows: | + | The HopeRF RFM95 module is connected to the Arduino using "dupont" wire, as follows: |
* pin VCC to arduino Vcc pin (3.3V) | * pin VCC to arduino Vcc pin (3.3V) | ||
* pin GND to arduino Gnd pin | * pin GND to arduino Gnd pin | ||
| Line 44: | Line 45: | ||
== Software == | == Software == | ||
=== Tools === | === Tools === | ||
| − | * Arduino IDE 1.6.8 | + | * Arduino IDE 1.6.8, from https://www.arduino.cc/en/Main/Software |
=== Libraries === | === Libraries === | ||
| − | I've used this | + | I've used this LoRa LMIC library: https://github.com/things4u/LoRa-LMIC-1.51.git |
Clone this library into ~/Arduino/libraries and restart the Arduino IDE | Clone this library into ~/Arduino/libraries and restart the Arduino IDE | ||
| Line 56: | Line 57: | ||
The firmware used on the arduino is the nano-lmic-v1.51-F.ino from the examples directory of the LoRa LMIC library. | The firmware used on the arduino is the nano-lmic-v1.51-F.ino from the examples directory of the LoRa LMIC library. | ||
| − | + | I had to make the following changes: | |
* in the library: replaced all instances of "arduino.h" to "Arduino.h" (capital "A") | * in the library: replaced all instances of "arduino.h" to "Arduino.h" (capital "A") | ||
* changed the device address (variable "DevAddr") in the .ino file to another number | * changed the device address (variable "DevAddr") in the .ino file to another number | ||
* changed the payload string in function do_send in the .ino file | * changed the payload string in function do_send in the .ino file | ||
| + | |||
| + | When running this code, you can see some debug messages coming in over the serial port at 115200 bps. | ||
Revision as of 13:45, 4 April 2016
| Project LoraWanNode | |
|---|---|
| |
| 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 | 2016-04-04 |
Introduction
This page describes the steps needed to create a simple LoraWAN node for the-things-network, using an Arduino Pro Mini and a HopeRF RFM95 module. It doesn't currently contain any new work, it just describes the steps I've done to use existing code to get a LoraWAN node to work with a LoraWAN network.
I've tested this successfully on the-things-network (TTN) in the city of Utrecht. The gateways picking up the signal from the node were approximately 1.5 km away.
Some of the messages received by the TTN: http://thethingsnetwork.org/api/v0/nodes/19740823
How to tell if it works
On the Arduino side, every time a packet has been successfully sent, you'll see a message containing "EV_TXCOMPLETE" on the serial output of the Arduino.
On the TTN side, you can go to http://thethingsnetwork.org/api/v0/nodes/YOUR_DEVICE_ID where you should see the content of the message you just sent, along with information about the particular gateway that received your signal, received signal strength and with what settings (bandwidth, spreading factor) your packet was received.
Hardware
The hardware I've used is:
- a HopeRF RFM95 module
- an Arduino mini pro, 8MHz/3.3V
- a CP2104-based USB-serial converter
The HopeRF RFM95 module is connected to the Arduino using "dupont" wire, 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
Basically this connects the RFM95 to the SPI bus of the Arduino, connects the RFM95 to 3.3V power and connects some of the generic RFM95 I/Os (like interrupt signals) to the Arduino. I don't know if connection of all the DIOx pins is really needed.
Software
Tools
- Arduino IDE 1.6.8, from https://www.arduino.cc/en/Main/Software
Libraries
I've used this LoRa LMIC library: https://github.com/things4u/LoRa-LMIC-1.51.git
Clone this library into ~/Arduino/libraries and restart the Arduino IDE
cd ~/Arduino/libraries git clone 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.
I had to make the following changes:
- in the library: replaced all instances of "arduino.h" to "Arduino.h" (capital "A")
- changed the device address (variable "DevAddr") in the .ino file to another number
- changed the payload string in function do_send in the .ino file
When running this code, you can see some debug messages coming in over the serial port at 115200 bps.