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PostPosted: Sun 26. Apr 2020 11:07:45 
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Joined: Sun 26. Apr 2020 10:56:40
Posts: 2
Hi! Can the inverted S.PORT pin be used for OpenTX integration? The manual says to never connect power to SYS, but will it work with inverted S.PORT signal and ground only?


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PostPosted: Mon 27. Apr 2020 15:35:29 
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Joined: Tue 03. Jul 2018 18:54:25
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He'd need to allow half duplex for that to work.

the sys connector is TX, RX, G. So it's full duplex.

I tried a few months ago to put a diode on the tx pin so it wouldn't receive the messages from inverted s.port, but it didn't work.


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PostPosted: Mon 27. Apr 2020 21:33:39 
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Joined: Mon 29. Apr 2013 16:06:44
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Hi,

in theory it can be used. S.PORT is always running in half duplex mode. But wiring must be correct. VCC can't be connected there.
I can help only with unmodified S.PORT wiring.

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