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trondgzi
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 Posted: Sun 26. Apr 2020 11:07:45 |
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Joined: Sun 26. Apr 2020 10:56:40
Posts: 2
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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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p.i.engineer
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Posted: Mon 27. Apr 2020 15:35:29 |
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Joined: Tue 03. Jul 2018 18:54:25
Posts: 21
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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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Annotation 2020-04-27 073450.jpg [ 79.55 KiB | Viewed 228 times ]
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ZeXx86
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Posted: Mon 27. Apr 2020 21:33:39 |
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Joined: Mon 29. Apr 2013 16:06:44
Posts: 12442
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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.
_________________
Spirit System developer
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