G-RX8 software upgrade

Help with any software/desktop related issues. e.g. companion9x, eePe, etc
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chapterone
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G-RX8 software upgrade

Post by chapterone »

G-RX8
Can I upgrade this receiver with the TX as we do with X8R etc.
I suppose that I have to make a new cable with another Smatport connector.

My problem is that CH7 doesn't work. Not in Sbus mode as documented, but also not in PWM mode.

Carbo
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Re: G-RX8 software upgrade

Post by Carbo »

Upgrade with TX is one possibility, usually a matching cable comes with the RX.

Channel 7 is presumably a hardware issue. There is no reverse polarity protection for the GPIOs. Once a servo reverse connected and powered up, is sufficient to destroy the specific output. Presumably FrSky changes this in the upcoming version.
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chapterone
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Re: G-RX8 software upgrade

Post by chapterone »

Thanks Carbo,

My TX is Q X7S. Do you think I can Use the TX Smartport when I upgrade G-RX8? If so then I can use the cable that came with the RX.
Otherwise I have to modify a cable to use it in the modul bay, as in X9D.
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chapterone
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Re: G-RX8 software upgrade

Post by chapterone »

I found a really good description here. No need to modify cable:

https://blog.seidel-philipp.de/how-to-f ... d-or-qx7s/
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jhsa
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Re: G-RX8 software upgrade

Post by jhsa »

chapterone wrote: Wed Dec 20, 2017 3:57 pm
My problem is that CH7 doesn't work. Not in Sbus mode as documented, but also not in PWM mode.
If ch7 is not working also in SBUS as he says, then it is very unlikely that it is an hardware problem..

Just my 2c

João
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Carbo
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Re: G-RX8 software upgrade

Post by Carbo »

You can select SBus or PWM mode with G-RX8. His issue is the missing PWM signal on PWM7. SBus is not affected.
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Kilrah
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Re: G-RX8 software upgrade

Post by Kilrah »

His post does say sbus is affected.
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chapterone
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Re: G-RX8 software upgrade

Post by chapterone »

João,
Good comment as always.
BUUUT
what I ment to say was that CH7 Pins are disabled in Sbus mode.
I haven't checked CH7 in Sbus mode so now I have to do my homework.
Thanks
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Kilrah
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Re: G-RX8 software upgrade

Post by Kilrah »

Aha, more clear.

Then I guess some reading the manual is needed since it's described exactly that way.
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Re: G-RX8 software upgrade

Post by Carbo »

Kilrah wrote: Wed Dec 20, 2017 9:45 pmThen I guess some reading the manual is needed since it's described exactly that way.
chapterone wrote: Wed Dec 20, 2017 3:57 pmMy problem is that CH7 doesn't work. Not in Sbus mode as documented, but also not in PWM mode.
As documented, yes ;)

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