Lora tracking

[daa...@gmail.com]

To track a Lora HAB what is required? Ive got a TTGO LoRa v2.1 .  What is required in firmware terms to track these balloons. Is it a Gateway or something else?

[David Akerman]

The TTGO is I presume one of the T-Beam models with LoRa and UBlox GPS?  And is it a 434 or 868MHz model?

There are 2 choices.  You can either go the LoRaWAN route in which case you'll need LoRAWAN HAB tracker firmware on the device, and any LoRaWAN gateway on the ground. You'll need an 868MHz device for this.  Others have gone this route but I haven't yet.

The other choice is to use firmware to make a UKHAS LoRa tracker (see my github/daveake).  This works best on 434MHz since there are more receivers around.  For the receiver you can use the LoRa HAB gateway on a Pi, or the Uputronics LoRaGo USB connected to a phone or tablet or PC, or use another T-Beam LoRa (no need for GPS on this one) again connected to a phone or tablet or PC.

Dave

On Sat, 10 Apr 2021, 13:31 daa...@gmail.com, <daa...@gmail.com> wrote:

To track a Lora HAB what is required? Ive got a TTGO LoRa v2.1 .  What is required in firmware terms to track these balloons. Is it a Gateway or something else?

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[dan...@adkin.net]

 

Hi Thanks for your reply Its :-

 

ESP32 LoRa32 V2.1 

https://www.aliexpress.com/item/1005001776788497.html?spm=a2g0s.9042311.0.0.7c894c4dICAax3

 

and I have both 433mhz and 868Mhz to play with

 

Dan

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[David Akerman]

That one doesn't have GPS so you would need to connect a suitable GPS module to it.  Or get the T-Beam which already has GPS.

Dave

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[Steve]

Hi - from what has been said,  its not clear to me if you want to track the HAB (i.e. receive the balloon on the ground) or build a balloon tracker (i.e. the air unit). or maybe both?

    Steve

On 10/04/2021 13:31, daa...@gmail.com wrote:

To track a Lora HAB what is required? Ive got a TTGO LoRa v2.1 .  What is required in firmware terms to track these balloons. Is it a Gateway or something else? --

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[Sergey]

Hi! 

Yes! Да, могу отследить 

18:34, 11 апреля 2021 г., Steve <st...@randomaerospace.com>:

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Отправлено из мобильного приложения Яндекс.Почты

[David Akerman]

Ah, well spotted Steve ...

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[David Akerman]

OK, so assuming you want to track UKHAS LoRa balloons, not LoRaWAN ones, you first need receiver firmware which you can get from:

https://github.com/daveake/LoraBluetooth

Take care to configure for that particular device.

You can link that to a PC or Android device.  On a PC it appears as a serial port.

If this is for a fixed installation rather than mobile then I suggest my HAB Base Windows program:

https://github.com/daveake/HABBase/releases

This will allow you to connect to the TTGO device over USB serial, set the frequency etc and see the incoming telemetry.  It has its own Google map and can upload telemetry and images to the UKHAS Habitat system.

Dave

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[Dave B]

Hi.

Out of curiosity, I looked at your HABBase code.

First time, the tar.gz file opened in the default archive manager (running Mint 19.3 Cinnamon 64 bit.  I don't use Windows here any more.)

But after I fumbled something, this system now reports an error relating to an unknown archive format.   Plus, I seem to have acquired some xsession error files (if they are of interest.)

I was trying to find the build instructions, make, cmake or ??? etc.

Closing down the browser etc and starting over, I see a load of .pas & .dpr files, so guessing it's a Delphi project, but no mention of which version was uses.   (The xsession error files seem to have been removed too.)

Do you know if it would build under Lazarus (cross platform fairly Delphi compatible) at all?   Also, what Windows specific (unique) resources does it *need*?   I didn't see any readme (or similar) file.

Perhaps it could be something a Pi attached LoRa RX could do, sitting under an otherwise little used UHF antenna?  Not that I even know if Lazarus would build for a Pi, yet.   But, this looks promising...

    https://wiki.lazarus.freepascal.org/Lazarus_on_Raspberry_Pi

73.

Dave G8KBV.  Near Buckingham (UK, for our US readers.)

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[David Akerman]

There's a .exe installer under Releases.

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[Dave B]

for x86-64 Linux or Pi ?

Dave KBV.

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[David Akerman]

WIndows.

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[David Akerman]

Info on the HAB Base program ... http://www.daveakerman.com/?page_id=2760

Dave

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[Maurizio Morini]

Hi Dave and all

>There are 2 choices.  You can either go the LoRaWAN route in which case you'll need LoRAWAN HAB tracker firmware on the >device, and any LoRaWAN gateway on the ground. You'll need an 868MHz device for this.  Others have gone this route but I haven't >yet.  

I have the TTGO T-Beam V1.1 ESP32 LoRa 868Mhz, and i would like to set up a LoRa transmitter on board, but i don't find any open source firmware to start from. Could you suggest me something specific ?

Furthermore, you say only 868Mhz is feasible: is that a chip limitation or there is another reason one can't use 433Mhz with this solution ?

Thanks in advance

Maurizio iu2jwg

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[David Akerman]

The comment about 868MHz modules was related to use of LoRaWAN, because most LoRaWAN networks use this band.  If you want to go the LoRaWAN route then you need to start by checking what band or bands) are in use in your country - could be 434 or 868 or 915.  For the UK for example, only 868 is used for LoRaWAN.

Most LoRa HAB flights though don't use LoRaWAN, but use the UKHAS sentence format as ASCII in raw LoRa packets.  For this you need to know what bands are legal in your country - for the UK for example 433 and 868 are allowed; for the USA it's 915.  The UK has a good number of UKHAS LoRa receivers but this might not be the case where you are.

Whichever band you choose, you'll need a matching LoRa device.

I can't help much on the LoRaWAN side as it's not something I've done much with yet.

For LoRa, I have tracker firmware for the T-Beam in my github (daveake).  For receiving LoRa, there are lots of options - see http://www.daveakerman.com/?page_id=2410 about those.

Dave

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[David Akerman]

I forgot to add this link https://www.thethingsnetwork.org/docs/lorawan/frequencies-by-country/index.html for LoRaWAN bands, with links to regulatory documents for different countries.

Dave

[Maurizio Morini]

Thanks Dave, sorry for my late answer.

Actually, I'm in Italy. Any specific suggestion/issue for this country in case you know of ?
Regards

Maurizio iu2jwg

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[Šerých Jakub]

All the Europe uses 868 MHz band

 

Jakub Šerých

 

From: uk...@googlegroups.com <uk...@googlegroups.com> On Behalf Of Maurizio Morini
Sent: Thursday, May 6, 2021 10:58 AM
To: uk...@googlegroups.com
Subject: Re: [UKHAS] Lora tracking

 

Thanks Dave, sorry for my late answer.

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[Maurizio Morini]

Hello Dave and all,

>For LoRa, I have tracker firmware for the T-Beam in my github (daveake)....

I think you mean the following project for TTGO T-beam in LoRa:

https://github.com/daveake/FlexTrack_TTGO

I don't find many info on how to build the project into the TTGO, should I use Arduino IDE ? Can't use PlatformIO ?
Sorry I'm beginner about microprocessor, really little experience. Any help is definitely welcomed.

Many thanks

Maurizio iu2jwg

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