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July 09, 2020, 16:14:14 pm

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Help, it's been a while

Started by BridlingtonFlyer, July 07, 2020, 12:29:31 pm

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BridlingtonFlyer

Hi all, I'm looking for some help. After a spell away from the hobby, I'm looking to get back into it. I still have some of my old models and a Futaba FF9 TX with a TM-8 FASST module in it. These all seem to be ok and functioning well. I've also just purchased a S800 wing and a Matek F405 WING flight controller with a view to doing some FPV.

What I didn't realise was an RX talks to the Matek over SBUS. This is something I've not touched on before. I'm getting all sorts of conflicting advise from ditching Futaba in favour of an open TX transmitter. To been told OpenTX isn't necessarily legal to fly in the UK. I thought I'd found a suitable FASST & SBUS RX https://inwoodmodels.com/product/futaba-6303sb-receiver/ but then I was told this won't work as my FF9 TM-8 Combo doesn't support SBUS. But then the RX instructions https://www.rc.futaba.co.jp/english/dl_manual/r6303sb_e.pdf specifically mention paring to a TM-8 module.

Super confused. I could do with some help.


Chris Foss Uno Wot - Mini Kangaroo

pooh

Stick to 35MHz, there's almost nobody there - at least that's my plan  :''
Confucious he say "more than one aircraft in the same airspace leads to structural failure"

BridlingtonFlyer

Long time. Joking aside 35 meg had crossed my mind just for FPV range if nothing else.


Chris Foss Uno Wot - Mini Kangaroo

PDR

Quote from: BridlingtonFlyer on July 07, 2020, 12:29:31 pmTo been told OpenTX isn't necessarily legal to fly in the UK.

That's twaddle - suggest you go back to whoever said that and ask them to explain why they think it's illegal. AFAIK the on;y ones that are explicitly illegal would be original DSM and DSM2 transmitters because they don't do LBT ("Listen Before Talk"), but that only applies to new equipment and it's still legal to fly DSM/DSM2 transmitters purchased before the rules changed.

PDR
There are no shortcuts on the long, hard road to success. But if your dad's rich there could a limo service...

BridlingtonFlyer

What's twaddle is my English. That should have read To being told. Any recommendations if I were to ditch Futaba? I'm not sure I need to though if that SBUS RX does work with my FF9/TM-8 setup. Anyone know for sure?


Chris Foss Uno Wot - Mini Kangaroo

PDR

I've recently bought a FrSky Horus X10s Express which now runs OpenTx, and I love it. You'll find my mini-review of it in the radio gear section. But this transmitter (and OpenTx itself) are only suitable for people who WANT complex transmitters with powerful software that you need to learn how to use.

If you've not had a complex transmitter before then OpenTx can be a bit of a steep learning curve. I found it worth the effort, but others view it differently. Also I came from a Multiplex background, from which it was a less-steep curve!

PDR
There are no shortcuts on the long, hard road to success. But if your dad's rich there could a limo service...

dickw

I know nothing about Futaba, but have used the S.Bus output from a non Futaba receiver to link to a flight controller.

I didn't have to do anything at the Tx because S.Bus is purely a link between the Rx and the flight controller, so any Rx with an S.Bus output should work. I just connected the Rx with the flight controller and programmed the flight controller using its own software.

I believe that if you are using S.Bus to control a series of connected "S.Bus servos" over a single cable then you need to programme the individual servos. I believe that can be done from some Futaba Tx, so perhaps that is what people were thinking of.

Dick
Grow old disgracefully

lanicopter

Quote from: BridlingtonFlyer on July 07, 2020, 13:10:46 pmLong time. Joking aside 35 meg had crossed my mind just for FPV range if nothing else.

Eek. Don't say that on here or you'll be facing pitchforks before you can say return-to-home.

35MHz is much more susceptible to interference than the 2.4GHz systems and with the right antennas range is absolutely not an issue. If you're using 5.8GHz video you'll run out of video range long before you have to worry about losing control.
Current fuel status: "Master Caution"

paulinfrance

Yesterday at 12:00:50 #8 Last Edit: Today at 13:13:17 by paulinfrance Reason: loose
The best range I got with standard gear was on 41 MHz and for the FPV gear 1.2/1.3ghz, cheap and you don't suddenly loose your feedback so no panic heart attacks,,

2.4 with 5.8 give a better image but loss of range and don't like going behind trees !
Mode 2 THE only way to fly

FrankS

As Dick says SBus is just a communication between the receiver and device, so if the Rx has an Sbus port then it should communicate with the flight controller.

Another option would be a Frsky FASST rx with SBus like this one https://www.t9hobbysport.com/frsky-tfr4sb-fasst-compatible-2.4ghz-4-to-16-channel-receiver

Ville

Today at 10:58:16 #10 Last Edit: Today at 11:49:01 by Ville
Quote from: FrankS on Today at 07:59:04As Dick says SBus is just a communication between the receiver and device, so if the Rx has an Sbus port then it should communicate with the flight controller.

Another option would be a Frsky FASST rx with SBus like this one https://www.t9hobbysport.com/frsky-tfr4sb-fasst-compatible-2.4ghz-4-to-16-channel-receiver

...or one oh these, https://www.xtremepowersystems.net/products.php?cat=8
I have used XtremeLink® X10 + Channel Expander V2 with Flysky SBUS and Multiplex SRXL and it works very well.

/Ville :)

ps.
When it comes to Mpx SRXL, it is only with Multiplex receiver RX-9-DR SRXL16 M-Link that you get 16 channels via the SRXL protocol. With the other RX- (X) -DR receivers, including the compact versions, you only get as many channels as the receiver is intended for, eg 7 and 9 channels respectively.
...
I know what I know and I do what I can