Development discussion of TauLabs software such as flight controllers, sensors, radios and speed controllers.
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Telemetry embedded in FPV audio (FSK DAC)

by peabody124 » Sat Feb 27, 2016 4:42 pm

So this pretty cool new feature just landed: https://github.com/TauLabs/TauLabs/pull/2202

Basically with Sparky2 (and Brushed Sparky and soon TauOSD) you can generate an audio stream that embeds LightTelemetry that can be sent over your FPV link (1200bps of data). KipK back in the day used to use this method to generate an OSD and the ground side https://github.com/KipK/Ghettostation which even provided antenna tracking:



I've been also playing with it as a sort of BlackBox log that is stored in your FPV video that you can replay:

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Re: Telemetry embedded in FPV audio (FSK DAC)

by peabody124 » Sat Feb 27, 2016 6:09 pm

Example of visualizing a flight path from FPV video

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Re: Telemetry embedded in FPV audio (FSK DAC)

by peabody124 » Sun Feb 28, 2016 3:41 am

Not as pretty but also able to visualize the flight path in ROS with mapviz to get
a realtime playback of the video and location (or at least GPS report of it):

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Re: Telemetry embedded in FPV audio (FSK DAC)

by peabody124 » Fri Mar 18, 2016 4:43 am

More work playing around with generate black box style video overlays from the audio telemetry logs:

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gotta add a few more dials and should be pretty useful.
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Re: Telemetry embedded in FPV audio (FSK DAC)

by peabody124 » Sat Mar 19, 2016 11:16 pm

More progress. Map overlay working now

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Re: Telemetry embedded in FPV audio (FSK DAC)

by peabody124 » Sun Mar 20, 2016 12:43 am

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Re: Telemetry embedded in FPV audio (FSK DAC)

by peabody124 » Sun Mar 20, 2016 4:52 pm

Show the audio telemetry data in the GCS now:

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Re: Telemetry embedded in FPV audio (FSK DAC)

by inis » Wed Aug 03, 2016 7:52 pm

I tried this, I never could get my FSK modems to work properly. I was able to generate the LTM protocol correctly though. Just was never successful in getting it over audio.
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Re: Telemetry embedded in FPV audio (FSK DAC)

by alexpaul » Thu Nov 10, 2016 3:53 am

I was able to generate the LTM protocol correctly though.
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Re: Telemetry embedded in FPV audio (FSK DAC)

by peabody124 » Thu Nov 10, 2016 3:59 am

Like it worked with the standalone basestation? That's awesome! I'd love to see video of it!

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