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Jul 16, 2019, 07:35 PM
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Help!

G-RX8 with FrSky Battery Voltage Sensor (FBVS-01)


How do I setup the FrSky Battery Voltage Sensor (FBVS-01) with the G-RX8 receiver in Opentx?

I've used the multi-cell sensor just fine but can't seem to get this one going. I did find a Youtube video that said to only use the red wire to keep from having a ground loop on a different receiver. Is that good advice.?
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Jul 16, 2019, 09:12 PM
Sagitta Fanboy
The FBVS-01 isn't a sensor per se, it's a voltage divider. So it works differently from a real S.Port sensor.

It needs to be plugged into the Ain port on the G-RX8's S.Port header, you shouldn't need a ground wire unless you have a fully isolated BEC/ESC (which is unlikely)
Jul 17, 2019, 01:33 PM
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Miami Mike's Avatar
Quote:
Originally Posted by mawz
... you shouldn't need a ground wire unless you have a fully isolated BEC/ESC (which is unlikely)
And if it doesn't work with just the red wire connected because you have a fully isolated BEC/ESC (which is unlikely) then you'll need to figure out why it's set up that way, but don't just add a ground wire because if you do that then you'll no longer have a fully isolated BEC/ESC.
Dec 11, 2019, 03:01 PM
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Thanks so much for the reply. I read it a shortly after you posted, but forgot to thank you.
Dec 22, 2019, 09:33 PM
Sailplane Mafia
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I made a video on the G-RX8 receiver for setup. If you skip to 7:09 it will help explain the voltage sensor hookup.

FRSky G-RX8 receiver bind setup howto (11 min 25 sec)
Dec 22, 2019, 10:38 PM
Registered User
Thread OP

Thank You


Thank you for the useful information. I'll try that hookup as soon as the holidays slow down.

Merry Christmas and Happy New Year!


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