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Update: It is now working. And I don't know what changed. ((Can't Use RX6R With XJT module in JR9303, 8103, or X-347 Transmitters. No channels 1-6)

L

LloydInAz

New User
Ok- the data: FRsky RX6R receiver, TX is JR9303 with an XJT module, switched to D16 mode (sw 1-off , sw2-off) Bind = successful. Only the aux4 switch on radio operates a servo on connector one of the RX. Both sticks, gear, and flap switch do nothing to drive servos connected on any of the ports. I'm guessing the receiver thinks it is the second rx in a 12 channel dual receiver setup. But there is just the one receiver. What have I missed? I did just get a Horus X10S, but I'm only about half way through the manual and don't feel competent to use it yet. I had a similar problem with a Spectrum rx that was telemetry capable, but I traded those off for older ones. Does the telemetry supplant the lower channel space?

Any clues?
 
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You are right. My reporting error. I've actually tried it both ways on the module switches. And with a V8FR-II HV (which works as expected, BTW). And yes the channels are moving on the monitor display of the JR. Thanks for the note!
 
So. No one knows how to fix the problem, eh? I still can't use the new receivers with the JR Xmitter and XJT module. Odd that.
 
New receiver?

Are both RX and TX running the same RF firmware. ACCST has two incompatible firmwares. v1.x.xx and a newer safer v2.1.x I assume your XJT is running the old firmware and the RX might be running the newer firmware. You might want to change one or the other as they need to be the same for communication to take place.
 
Unlikely, but since the RX6R is ACCESS-capable (I have mine set up with it), it might be flashed as such. You may want to re-flash it with whichever version of ACCST (v1 or v2) that you have on your XJT module.

Can you see on your Tx which version the XJT is? On a FrSky Tx you can see it on the 'Version' page in the Radio menu.

Unfortunately there is no way to read which version of ACCST your Rx has. The only way to know is to force it by flashing the version you want.
 
The receiver page on the Aloft site says Firmware V1 and V2 are incompatible and won't even bind. My set up does bind TX to RX. And JR TX Aux4 switch (I assume channel 9) operates on the RX6R port 1. My JR TX won't report what Version the XJT module is running. If it has a computer in it, it is too dumb to even ask for it. I suppose my XJT could be V1 as I bought it last year. (I have a newer one in the box I suppose I could try.) I don't know SW release time lines. Perhaps if I can figure out the new Horus X10S it will tell me the XJT version...if I can figure out how to do that.
 
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I'd be very surprised if an XJT (of any vintage) was at v2. But it should be easy to pop it into the Horus and navigate to the Radio/Version page and find out.
If you're able to do so with your setup, I'd go ahead and flash both the XJT and Rx to v2. But that may be easier to do once you've become more familiar with your Horus. There are lots of videos on YouTube (with links on this Forum) that can walk you through the update process.
 
@LloydInAz
OK - you are bound, so not a firmware issue. You have channel one getting control via a switch.

What channel is that switch controlling in the JR channel assignments? Is it channel 9?

Make sure the transmitter is not in some odd PPM mode. It should be setup for just 8 channels via the PPM stream. If there is some setting that allows more than 8 channels, turn that off.
 
This is a JR 9303 Transmitter. Yes it has nine channel capability. The channels aren't numbered, per se. However the monitor screen lists the AUX 4 switch last in the menu, so that IS likely channel 9, and that is the switch working a servo on Channel 1 of the RX6R. The TX modulation only has two settings, SPCM and PPM. PPM is selected. I'm not sure how to prevent the TX from sending channel 9 on the PPM stream. I'll look through the 9503 manual I have to see if I can inhibit the Aux 4 Switch. Maybe that will stop channel 9 in the PPM stream?
 
I was able to find how to inhibit the Aux 4 switch. I don't think it removed Channel nine from the PPM stream. It simply doesn't allow its position to change. True to intent, AUX 4 no longer changes the servo position on Channel one of the RX6R, But, neither do any other stick or switch movements change servo posiition on any of the RX6R channels. I put the XJT module in my Horus X10S. Fumbled with menus and found where it said the module was turned off. Maybe I have to put in the SD Card? Then it was time for dinner....so that's it for today.
 
I did (eventually) get the Horus to function (bind and move servos) with RX6R. Still haven't got the JR radios with the XJT module to work with the RX6R. I tried setting up with an 8103 I also have. Nice green bind light. No servo movement with any lever, switch or knob. The JR TXs do bind and drive servos with the V8FR-II. If I didn't have the Horus, I'd be stuck with 3-RX6R and 1-RX4R receivers, that I couldn't use with any of my radios. I don't know exactly why the JR PPM stream isn't accepted by the RX*R RXs. But, the Spectrum telemetry RXs I had wouldn't work either with JR TXs and I had to get rid of them. Specific reason still a mystery. I'm guessing its a timing window issue with the stream that there is no control over with the JR TX. So much for backward compatibility.
 
I've used the XJT on 3 of my JR 8103 no issues. I've even used FrSky telemetry on this set up (this has nothing to do with JR, as the data and display are all FrSky).

Go back to the basics. The fact that you couldn't get the Spektrum Module to work is a clue.

I've also used my JR 8103 with an Orange DSMX module and had good RF links for Spektrum.
 
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Trying to show that the XJT and the JR radio actually talk to each other without needing special timing, after market software or sacrificing virgins.

Here is proof of life after a maiden. The RF sections are ACCST V.1. As I recall this has an X Series 6ch RX installed.

(That is a Freewing Mirage 2000 v1 in 2004 Tiger Meet done right with an airbrush around the time frame 2014. Jet Fan 80mm at about 6K altitude )

tiger by the tail copy.jpg
 
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LloydInAz said:
I did (eventually) get the Horus to function (bind and move servos) with RX6R. .... So much for backward compatibility.
Click to expand...
So what was the issue with the Horus? And what kind of backward compatibility are you looking for? FrSky is about looking forward not backwards!

ACCST v1 is NOT compatable with ACCST v2.! Align (update) your RF sections so that both the TX and RX are using the same higher level version numbers, be it V1 or V2 (V2 is highly recommended)!

When I get back to Denver, I'll be updating all my FrSky equipment to ACCST v2.
 
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Thanks for your notes, Konrad. But, I have no joy with a JR9303, 8103, and now an X-347 using the XJT module and either an RX6R or an RX4R. These latter do bind in D16 Mode and show a nice green link on the RX, but no servo response to any TX command except the Aux4 switch on the 9303 (which is channel 9 driving port 1 of the RX. Of course, PPM modulation is selected on the JR Txs. There is no current issues with the Horus. It binds and drives all RX*R receivers fine. But, I don't have OpenTX installed on it, just FROS. All my JR TXs will bind and function in D8 mode Using the XJT and V series RXs. I have many Spectrum Rxs that work with the DSM2 TX module from Spectrum. It was only the telemetry Rxs that didn't work so I traded them off.

I don't know how to change all the the FrSKY firmware to V2 without first installing OpenTX and its companion on the Computer. And, there aren't any Gurus about in my town to help guide me through it. I notice the Horus does not present as a drive when connected to my Mac. (It does charge the Horus Battery just fine.) But, I can't get to any files inside the Horus. And, as far as I know there is no way to change the PPM stream timing on the JR TXs.

Thanks for your interest, Konrad
 
Is this all with the same XJT module?

You said you eventually got the Horus working. I'm wondering what was the issue that took some effort to correct? I ask as there might be something in that thought process that might help us isolate the issue.

There is no need to use Companion to upgrade the XJT or RX to ACCST v2.1.xx. Just download the files from the FrSky site to your computer. Install the SD card into a reader. move the files from the computer to the SD card. dis mount the SD card from the desk top In stall the SD card into your TX. Install XJT into the external RF bay. go to the firmware file on the SD card flash to external module. Bu I would not add the variable of v2.1.xx just yet.

There is no need or function needed to change the PPM stream timing (whatever that might be) in the JR.

Then there is the very unlikely situation where the module has failed.
 
The Horus issue was me being unfamiliar with the Horus and understanding the non-intuitive user interface.
I'll have to get an SD card reader that works with micro SD.
The XJT does work in D8 mode with older Rxs. It even binds in D16 mode. Just can't get servo activity. I do have a second XJT module I can try out later today.

Cheers!
 
D-16 mode makes me think you have a V1, V2 incompatibility issue.

By the way intuitive interfaces are like unicorns, they don't exist. Some interfaces are built on what someone thinks are common experiences and then calls these "intuitive".

But real software interfacing requirers a background (knowledge). Often this is best gained by well documented manuals and experimentation.
 
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