FrSky R-XSR receiver not working on Beagleboneblue with Arrdupilot

General Discussion
1

Hello,

Does somebody know how to setup a FrSky R-XSR receiver on a Beagleboneblue running ardupilot?

Thanks in advance for your help.

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2

The BBBlue has UART and you need an inverted UART for the SBus receiver…

Please hold while I dredge this up!

3

@lambrec69 ,

Check this out! This is as close as you will get from me on this effort: PX4-Autopilot/docs/en/tutorials/linux_sbus.md at main · PX4/PX4-Autopilot · GitHub

Oh and by “This is as close as you will get from me,” I mean GO ON and on and on about it…

4

@silver2row

Thanks a lot for the really helpful information!

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5

You are welcome. You can probably use that circuit with a logic level converter:

image
image345Ă—295 3.97 KB

I say logic level converter because of the fact that anything going back to the BBBlue on 3.3v from 5v will destroy the pin or even worse… The potential difference or voltage of 5v hitting the 3.3v pin could well in fact destroy the am335x on board the BBBlue.

I have ruined some boards before today. So, I really do know of why I say what I am typing.

Enjoy…

6

@lambrec69 ,

Did you ever configure your BBBlue with SBus for ardupilot?

Also, I was not sure if you reviewed this form of a set up but: BeagleBone Blue — Copter documentation

That help some too.

7

@lambrec69 , I just used a MOSFET and the board did not die or falter. The ideas are basically the same but the MOSFET has a built in diode. Also, the --upload command has been rendered obsolete. I used sftp but I need to wait to test.

8

Hi

You dona need an inverter if you Connect te receiver to the pru ecap pin. The pru code alreqdy deal with the inverted signal.

The E4 conector as original mírkix repo - GitHub - mirkix/ardupilotblue: Howto use BeagleBone Blue with ArduPilot · GitHub

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