How to connect and test FrSky redundant receivers (Patreon Request)

[@locoworks8179]

the down side with this is the telemetry warnings, you still get signal low warnings even if the back up receiver has a perfect signal because the telemetry is coming from the master receiver, there really needs to be a way to get 2 simultaneous telemetry streams so the pilot knows they have a good signal and proper control.

[@gingermattb]

Good tip on changing the RX number to test redundancy is working, but the real wrinkle Frsky need to address is how you optimise RX antenna positioning on the secondary RX without RSSI available. I understand why getting telemetry from both at the same time isn’t possible, but what they should work on is a way of being able to select which RX delivers the telemetry from the TX at any given moment. That would be killer functionality, but Frsky being the experts at ignoring user requests and shooting themselves in the foot these days I doubt they will ever deliver anything like that.

[@charlesmcguire9711]

Thank you Lee. Can you also then change the outputs of the 2nd reciever to 9-16 to take advantage of the all the outputs?

[@Painless360]

You can setup an X8R to output those channel's see my X8R binding options video.. Best of luck

[@RcAircraft]

Another great tutorial

[@smiffy788]

I assume you could use a second battery for the second RX just incase the main one failed (i'm thinking large models)

[@MCsCreations]

Oh, pretty interesting indeed! 😃 Thanks a lot, Lee!!! Stay safe there with your family! 🖖😊

[@batmojuice5704]

I’ve done something like this with an RXSR and an R9 receiver. That gives you redundancy, but redundancy at different frequency bands . This may be better than duplex redundancy at just 2.4 GHz.

[@robertkulyassa2084]

That's what I wanted to ask, if it works in such a setup (2.4GHz + 900MHz). Does it work the same way or your setup was different?

[@batmojuice5704]

@@robertkulyassa2084 I think it works for any receiver with an SBUS In (as the master receiver). This guy has a pretty good video of one example and this is what I used, but the ones shown don't have PWM outputs. kzbin.info/www/bejne/qHzdipSGo9qUos0

[@rizen3467]

Since the redundancy feature works on sbus, is it possible to use a small r9 sbus receiver as a backup to get a dual band receiver for the tandem x20?

[@Painless360]

Any sbus capable reciever should work but I've not used that one here.. Happy flying

[@TheHarberHangar]

If I understand, you need at least one RX8R as the “main parent” because it has an SBUS-IN port. SO: Can you Y-IN more than one X8R (or other receiver with SBUS-OUT) into the RX8R SBUS-IN, in order to have multiple satellite receivers?

[@Painless360]

I don't think that is the idea with these. I've only tried it as shown in the video. Best of luck!

[@yuriykovalov2936]

Hi Lee, Is it possible to do a similar type of setup but with Radiomaster TX16S with EdgeTX? Thank You,

[@Painless360]

Yes, and also check out my video on binding multiple ExpressLRS recievers recently too... Happy flying

[@davidlondon3111]

Couldn’t you test the redundancy by wrapping the primary rx in alfoil? On a different track- is it possible to do this for a quad?

[@Painless360]

Yes. Happy flying

[@jakeclauson9863]

could you connect the 2 rx together without the power wire/only the signal wire in order to keep them on separate power sources and the same signal?

[@Painless360]

That would add an extra level of protection... Happy flying

[@jakeclauson9863]

@@Painless360 that's my intention. I was questioning whether different voltages would affect their operation together. Then I remembered the becs will be set the same. Never had a reason to use 2 so haven't tried it yet. Wish me luck. Thanks

[@rajvanshsinghbhuee]

Halloween theme returns ❤️

[@karlosio1]

Great video as always. Can this redundancy also work when using 2 Frsky X8R receivers with 16 channels active? I am using this setup for the Avios Spitfire with fpv and head tracking. 6 channels for the taer+gear+flaps // 3 channels for the gimbal movements // 1 channel for navigation light. If redundancy option is possible, how to connect the 2 reveivers with each other? I can't get it to work at the moment. The 16 channels are working fine, but the one receiver doesn't take over from the other one when receiver number is changed.

[@Painless360]

I don't know. Sorry I can't help this time.. Best of luck

[@petersfield7397]

Excellent advice vlog

[@mervintthomas]

Is there any way to bind the RX8R pro with the DJT module (using it with the Radiomaster TX12mkiiELRS/EdgeTX). need some help please

[@Painless360]

Yes, make sure it is using the ACCST V2.x firmware and it should work as normal. See my video on binding Multi-protocol modules. Best of luck!

[@vyoufinder]

When doing this, can I use the RX8R PRO in high speed servo frame rate mode? By that I mean 9ms as opposed to 18ms. Will it conflict with the X8R only being capable of normal, 18ms servo frame rate? Would there be adrawback to doing this by connecting signal pins for channels 5 & 6 during bind on the RX8R PRO?

[@Painless360]

I'm not sure, let me know what you find... Best of luck

[@bomberaustychunksbruv4119]

Often wondered how this works. If I was to do this and have an FC - do I just use a Y lead for sBus?

[@Painless360]

Use the SBUS from the 'SBUS out' on the R-X8R ... Happy flying

[@gregorydahl]

Can 3 recievers in a chain on onne model bind to3 transmitters and hav 3 pilots spaced 1000 feet or more apart on the ground to fly triple range distance ?

[@Painless360]

You can 'clone' a radio so that the receiver sees the other radios and binds to them as they come into range.. Happy flying!

[@gregorydahl]

Two pilots with two recievers and two transmitters in two locations could extend the range ?

[@Painless360]

Yes, I've heard of others trying it... Happy flying

[@gregorydahl]

@@Painless360 oh thans . Nevermind the other comenti jst asked again and then noticed you answered the first time . 👍

[@CirrusRC]

Useful, thanks for sharing.

[@rhipp100]

Lee, I tried this setup using a RX8R and a S8R this is the issue I ran into. This was used on a heli with everything set up I would get a random control movement. This would make for a bad day flying. Needless to say would make a bad day flying is there an issue using the S8R? Thanks

[@Painless360]

I wouldn't use an S8R unless you could be sure that it wouldn't be acting as a stabiliser....

[@rhipp100]

@@Painless360 thank you

[@pavelduniak685]

Can i use Sbus for controlling my autopilot and any another channel to control my additional payload at the same time ? Or Sbus anyway combine all channels in one ? If its possible can i use one receiver ?

[@Painless360]

SBUS is a single wire digital signal that carries all of the received channels to the flight controller. You can forward channels onto spare pins on the flight controller to allow for control of PWM devices. Or you can use something like the setup shown in the video to add more PWM outputs..

[@pavelduniak685]

@@Painless360 Ok, i have a Simple Pixhawk. And it’s uses Sbus. So all channels are wired in one. I need to have one empty channel from receiver to give my Arduino microcontroller Pwm signal. If I will pair two receivers I will have an additional channels on second receiver not covered by sbus. So I can connect to my Arduino second receiver channels and first receiver to autopilot by sbus ? I’m trying make a data logger. I connect my Arduino to autopilot. And I want to collect data when Arduino gets pwm signal. I can’t get Pwm from my pixhawk, because it’s can overload him. So I decided to do it by receiver. But they connected via sbus. So I’m looking for solutions, how can I get free receiver channel not covered by sbus.

[@Painless360]

Introduction to the EagleTree Vector and MicroVector: kzbin.info/aero/PLYsWjANuAm4rGvGdhkpYE6VWCdTEmz0kB may be worth a watch.... Happy flying

[@pablop7461]

Hi my dear friend. I need your help. I have the radio radiomaster tx16s with EdgeTx software and a wanna buy some recivers to use on my 3D airplanes but is very important for me to have telemetry of the battery of the plane so can you tell me witch brand is the best, is for 7 or 8 servos.

[@Painless360]

I still use FrSky ACCST V1 X8R receivers here. I've got so many that I've not needed to buy anything else for a few years. Anyone else got any ideas?

[@turboromy]

Can you share info what receiver you decided on your plane ? It is gas or electric ? I've been using X8R with zero issue on 2 diff electric planes. RX8R Pro is said to be safer with gas ignition. Found something I never even considered with Lee's upload.

[@mastercardblue6675]

What are the equipment needed to fly 30 km?

[@Painless360]

See my video on flying further.. Happy flying

[@tb6638]

So I have the RS8R with a crossfire nano plugged into the sbus out. I have the RS8R bound to the internal module and crossfire on the external module... I am under the impression its able to use both, but I am not sure if it is actually working. Does anybody have any ideas how I could test that?

[@Painless360]

You can turn off the external radio module in the radio... Best of luck

[@vesalamminranta6744]

I think that if Need Sbus to flight controller. And I also need PWM channels like landing gear , or some other things with PWM channels and Fc is using SBUS then other uses Sbus and other can use normal PWM 8channels... So am I right? because I understand It that way when asked Frsky. But my english skills are not perfect because im from finnland there might be misunderstood

[@Painless360]

A lot of the receivers that have PWM and SBUS outputs will output both at the same time so you can use the unused PWM outputs on the Rx for other servos on the aeroplane. You can also use channel forwarding on the flight controller to present channels on the spare PEM pins for things too. You can see me do this in this video: kzbin.info/www/bejne/eoXVd6h5q6Zqpbc

[@freespirit3152]

(( HELP )) Could you ((( PLEASE ))) Demonstrate Two frsky r-xsr receivers Redundacy wired up !!! this Receiver has S-bus in and S-bus Out !!! ,, anyone else ? can help ???

[@Painless360]

I would if I still had two (and still used them). Sorry I can't help this time.. Best of luck