[OpenTRV-dev] LoRa

[Bo Herrmannsen]

yep i figured that last night....

the arguement was that it  was not as open as FSK mode was... i cant see
why they have some much against it...

but oh well, i think they will figure it if LoRa becomes the standard for
small sensors

2016-01-03 14:44 GMT+01:00 Mike Stirling <mail at mikestirling.co.uk>:

> Some (e.g. daveack) have used it for tracking as an alternative to RTTY.
> I don't think they're using it for ukhas.net, which is probably what
> James meant.
>
> On 02/01/16 20:51, Bo Herrmannsen wrote:
>
> Hi mike....
>
> have been thinking... you say that the HAB guys use the LoRa radio... are
> you sure about that? was on an IRC chat and james said that they have
> rejected it on the grounds that its not open source
>
>
>
> 2015-12-31 11:20 GMT+01:00 Mike Stirling <mail at mikestirling.co.uk>:
>
>> Hi Bo,
>>
>> The MAC layer (LoRAWAN), which I think Jeremy is referring to, is a
>> public spec, but the underlying modulation is not.  You can therefore
>> currently only implement a LoRA system using one of Semtech's radios or a
>> module based on their IP (e.g. Microchip).  The modulation is some sort of
>> chirp spread spectrum system so is non-trivial to reverse engineer, but
>> efforts are ongoing in the community.  Once that happens it would be
>> possible to implement the physical layer in a software radio if that's what
>> you want.
>>
>> Note that you can use a LoRA radio without the LoRAWAN MAC (as the HAB
>> guys currently do).  In this case it just becomes a proprietary data pipe
>> like the RFM22B or RFM12, but with longer range.
>>
>> Mike
>>
>> On 29/12/15 10:03, Jeremy Poulter wrote:
>>
>> From what I understand there is a component that is signed and you can
>> not change it but I believe the source will be available at some point.
>> This is the component that deals with the time slicing and transmitting so
>> you can not send more than you are supposed to.
>>
>> Jeremy
>>
>> On 28 December 2015 at 13:37, Bo Herrmannsen < <bo.herrmannsen at gmail.com>
>> bo.herrmannsen at gmail.com> wrote:
>>
>>> Hi
>>>
>>> on the topic of using LoRa i have been told that parts of it are closed
>>> source in the way that you send data off by AT commands and then "magic"
>>> happens
>>>
>>> Have i been told wrong?
>>>
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>>>
>>
>>
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>
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