Starting with Horus Binary

[John Laidler]

About ten years ago I launched a HAB in the UK which had a successful flight using Dave Akerman's Raspberry Pi software. With my local radio club I now plan to launch another HAB but I am very out of date.  

From this Group it seems Horus Binary is now very popular but I cannot find any simple guides to setting up a tracker using an Arduino or RPi. I have found references to re-programmed RS41s but is this the only way it can be done?

I have found references to receiving Horus signals and we will need to be able to doi that but the first aim is to create a suitable payload.

Any help would be very gratefully received.

John

M0WIV

[Steve]

Overall I've found Horus Binary 4FSK very good - certainly an improvement over RTTY.

Horus Homebrew transmit - start here:   https://github.com/projecthorus/horusbinary_radiolib - an Ardiuno horus V2 4FSK example using RFM98W.

I got it working on the pi pico under Arduino pretty easily - and then changed to using  NTX2B and  LMT2 because of their frequency stability (although horus seems pretty capable of tracking frequency drift).

More recently I've used reprogrammed RS41 using https://github.com/mikaelnousiainen/RS41ng (which support horus V2)  and https://github.com/Nevvman18/rs41-nfw (which supports V3) - the nfw version is still a bit "beta" but it does seem to work.

Receive wise Ive used:

    https://github.com/projecthorus/horus-gui - I have V2 working on OSX and V3 working on Windows 10 laptop (as per recent posts) 

    and webhours   https://horus.sondehub.org/   - all you need is a chrome browser (works very well on windows and osx).

    Steve G8KHW

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[John Laidler]

Steve,

Many thanks, that's a very good steer. I was a bit overwhelmed by the amount of information and a potential warren of rabbit holes. 

John

M0WIV 

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[Ben Z en de rest]

I would also recommend to check for tbtracker on GitHub, it supports LoRa, Horus v3, on esp32 family https://github.com/RoelKroes/TBTracker-ESP32/tree/main

Op zo 22 feb 2026, 21:36 schreef John Laidler <rjohnl...@gmail.com>:

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[John Laidler]

Ben,

Thank you.  I had found that but at first sight it looks a bit complicated for me, I'm looking for an Idiot's Guide but I will have another careful look at it.  :-)

John

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