Two RX6R rec?

Hardware help and support for the FrSky Taranis
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pmullen503
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Two RX6R rec?

Post by pmullen503 » Fri Mar 20, 2020 8:59 pm

I've used two receivers bound to the same number in a plane to make connections easier. For example, one in the wing and one in the fuselage so only a power connection between the two.

I was wondering if two RX6R receivers bound 1-8 telem (master) and 9-16 no telem (slave)connected via SBUS would give PWM channels 1-6 on the master, 9-12 on the slave and still be redundant?


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Kilrah
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Re: Two RX6R rec?

Post by Kilrah » Fri Mar 20, 2020 9:50 pm

Yes but only one way. If the "secondary" receiver that has its output connected to the other loses signal then its pins will go into failsafe.

Not sure if you can connect them both in a "ring", would need testing. Might be OK in theory.

pmullen503
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Joined: Sun May 06, 2012 8:37 pm
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Location: Fond du Lac, WI

Re: Two RX6R rec?

Post by pmullen503 » Sat Mar 21, 2020 12:17 am

So say I have the wing receiver (ail, flaps, gear, motors) as secondary, fuselage receiver (ele, rud, gear, steering, telemetry) as primary.

If the primary loses signal, I still have all those servos but my wing servos all go to failsafe? If the wing receiver loses signal, it's servos still go to failsafe?

Normally I would have separate ubec for the two receivers. Would the SBUS connection be a problem? Should those ubecs be diode isolated? Maybe go with a single ubec and battery backup?

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Kilrah
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Re: Two RX6R rec?

Post by Kilrah » Sat Mar 21, 2020 9:46 am

No, if the primary loses signal then all servos continue working. If the secondary loses signal then wing servos go into failsafe while fuselage continues to work.

For the dual battery setup either the BECs should have diodes on their output, or you could remove the red wire from the SBUS connection and have both sides powered separately.
If you use diodes then you can have the power setup redundant, but make sure the red/black of the SBUS cable are capable of handling the current draw of the other side.

Would be worth wiring the SBUS ins and outs both ways to see what happens depending on what link fails.


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