[OZAPRS] LoRA tracking

[Mark Jessop]

Nice descriptive reply there...

Not quite sure why we're talking about LoRa in the Australian *APRS* list,
but anyway...

Cheap LoRa Arduino Shield:
https://www.seeedstudio.com/Dragino-LoRa-Shield-support-433M-frequency-p-2672.html
(similar available for 915 MHz).
LoRa Raspberry Pi Shield:
http://www.dragino.com/products/module/item/106-lora-gps-hat.html
... and probably something similar available from Jaycar, I guess?

We've been using LoRa modules in the Project Horus 'flight termination'
payload (which also has GPS tracking) for a few years now. We run them on
the 434 MHz ISM band at 25mW, for command & control of the cutdown
mechanism (nichrome wire). We have a whole ecosystem of software based
around communicating with the cutdown payload and transferring data around
the chase car's network.
Ground Station: https://github.com/projecthorus/HorusGroundStation
Payload: https://github.com/projecthorus/FlexTrack-Horus

Quite a few libraries around to talk to the LoRa ICs (usually a Semtech
SX127x series chip).
Python Library for use on a Raspberry Pi:
https://github.com/mayeranalytics/pySX127x
Arduino Library: http://www.airspayce.com/mikem/arduino/RadioHead/

Unfortunately the LoRa modulation scheme is patented, so use of it on the
amateur radio band is a bit contentious. At the very least, there's a
reverse engineered gnuradio library available:
https://github.com/BastilleResearch/gr-lora

73
Mark VK5QI


On Tue, Nov 7, 2017 at 5:58 PM, Andrew Rich <vk4tec at tech-software.net>
wrote:

> Jaycar
>
> Sent from my iPhone
>
> On 7 Nov 2017, at 5:13 pm, Justin Albury <justin at jacomms.com> wrote:
>
> Whats involved in (hardware) for the LoRA projects??
>
>
>
> Any links??
>
>
>
> Justin Albury
>
> J Albury Communications
>
> justin at jacomms.com
>
> 0417246791
>
>
>
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> *From:* OZAPRS [mailto:ozaprs-bounces at aprs.net.au
> <ozaprs-bounces at aprs.net.au>] *On Behalf Of *vk4tec at tech-software.net
> *Sent:* Tuesday, 7 November 2017 11:50 AM
> *To:* 'Australian APRS Users' <ozaprs at aprs.net.au>
> *Subject:* [OZAPRS] LoRA tracking
>
>
>
> Playing with GPS / Arduino and LoRA 915 MHz modules
>
>
>
> Andy VK4TEC
>
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