cleanflight VS urh

Wheni first stumbled across https://github.com/jopohl/urh (universal radio hacker) i couldn’t believe my luck.

I’ve done stuff like this manually before (as in just collecting all the bits and then trying to ascribe meaning, e.g. https://github.com/cleanflight/cleanflight/issues/1125#issue... ) but i used URH to reverse my bbq temperature sensors.

I have an alexa skill that shows the last 20 readings for both probes on a graph. It is stupidly over the top (a Pi with a cheap sdr dongle listens for packets from the bbq down the garden, it parses out the measurements and fires them into a dynamodb which is absurd but it was quick to do, then the Alexa skill just pulls from there and sends to a chart api that draws my line graphs to show on alex’s screen - totally absurd but great fun to do)

This? https://github.com/cleanflight/cleanflight/releases/tag/v1.1.0

This made it really easy to figure out how to interpret the packets from my wireless barbeque thermometer. Previously i used some monstrous excel for this kind of pattern finding, e.g. https://github.com/cleanflight/cleanflight/issues/1125#issue...

In the end the bbq temp sensor turned out to be trivial, using rtl433 on a raspberry pi I just log the packets to a dynamo table and alexa (using google charts from a lambda) plots the last 20 points on screen.

>> or somewhat expensive and complex SDR

I don’t think that’s as accurate today as it used to be.

On the hardware side there are tons of options very cheaply available - iirc the flipper uses the c1100 (or a number like that) it’s a popular cheap chip and it’s well documented and interfaces easily with arduino.

More accessibly, lime mini SDRs are cheap but there’s quite a few alternatives too.

On the software side GNU Radio is free with decent tutorials - we’re not talking anything like blender levels of difficulty to adopt even if it is a complex domain.

Although on the more accessible side, urh is incredibly powerful given how easy to use it is https://github.com/jopohl/urh

I used the latter to tap into a 2 channel wireless bbq thermometer via a $10 rtl sdr and that was a breeze, an absolute walk in the park compared to when I reverse engineered the flysky telemetry system.

Universal Radio Hacker on Github

you should check out Universal Radio Hacker

Check out URH.

URH can read flipperzero sub files and can export from wav to sub... https://github.com/jopohl/urh

Throw the recording at UniversalRadioHacker and see what it does with it!

I dont have much knowledge on decoding a signal from scratch but try URH - universal radio hacker here. It might be able to do what you need.

It's useful for transmitting digital RF signals to control household stuff, eg. ceiling fans or whatever. You'd want to also look into rtl-sdr and Universal Radio Hacker.

Tried tool https://github.com/jopohl/urh and it does not get too much information. I am expecting to find something similar to wireshark - it can detect protocols in traffic and highligh different kind of fields in packet headers.