[OZAPRS] LoRA tracking

Glen English VK1XX glenlist at pacificmedia.com.au
Wed Nov 8 06:23:30 AEDT 2017


the 868 one is illegal in AUstralia.


On 8/11/2017 6:19 AM, Dave wrote:
>
> The Jaycar gateway is a Dragino. I've seen an Aus site with them
> https://www.iot-store.com.au/collections/iot-networking-comms/LoRa-IoT 
> and at about 2/3 Jaycar prices too.
>
> I believe that 915Mhz is recommended in Aus.
>
> Dave
>
>
> On 7/11/2017 7:11 PM, Mark Jessop wrote:
>> 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
>> <mailto: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
>>     <mailto:justin at jacomms.com>> wrote:
>>
>>>     Whats involved in (hardware) for the LoRA projects??
>>>
>>>      
>>>
>>>     Any links??
>>>
>>>      
>>>
>>>     Justin Albury
>>>
>>>     J Albury Communications
>>>
>>>     justin at jacomms.com <mailto:justin at jacomms.com>
>>>
>>>     0417246791
>>>
>>>      
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>>>     *From:*OZAPRS [mailto:ozaprs-bounces at aprs.net.au
>>>     <mailto:ozaprs-bounces at aprs.net.au>] *On Behalf Of
>>>     *vk4tec at tech-software.net <mailto:vk4tec at tech-software.net>
>>>     *Sent:* Tuesday, 7 November 2017 11:50 AM
>>>     *To:* 'Australian APRS Users' <ozaprs at aprs.net.au
>>>     <mailto:ozaprs at aprs.net.au>>
>>>     *Subject:* [OZAPRS] LoRA tracking
>>>
>>>      
>>>
>>>     Playing with GPS / Arduino and LoRA 915 MHz modules
>>>
>>>      
>>>
>>>     Andy VK4TEC
>>>
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