Bind TRex300 to Spektrum radio

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Home › ✈️Aircraft › 🚁Helicopter › Helicopter Main Discussion › Bind TRex300 to Spektrum radio

11-23-2019 05:01 PM 21 days ago

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noname

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Woodinville, WA

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Bind TRex300 to Spektrum radio

Hi,

I just got a TRex300 w/miniGRS, and I'm trying to bind it to a Spektrum DX6e. I replaced the A.BUS satellite receiver with an SPM9745 satellite receiver, followed the instructions, and I can't get it to work.

I'm using the binding plug on the THR end of the MiniGRS, and I have tried pressing and not-pressing the SET button on the miniGRS. No matter what I do, I get a Binding Failed message on the radio.

For kicks, I tried binding using the A.BUS and a A10 radio and had no problems at all.

Can anyone please tell me exactly what must I do to bind the TRex to the spektrum?

Thanks a lot,

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11-24-2019 12:24 PM 20 days ago

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Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
/

GRS work with align A10, DSM2, DSMX and futaba S-FHSS.

You intent to fly on DSMX.
So, you connected a satellite DSMX on GRS. Ready to bind...

It is difficult to Follow you without more explanations...

If we Follow the Instruction manual... Please, tell us what is the problem, related to color led, flashing ones...

/Saludos cordiales,

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11-24-2019 04:56 PM 20 days ago

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noname

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Woodinville, WA

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Thanks for jumping in! After I plug in the battery, an orange light in the satellite starts rapidly flashing. When I power on the TX and start binding, the satellite stops flashing, and the TX prints out a message saying Binding Failed.

I have tried all the combinations of sequences that I could come up with, and all result in the same error.

Needless to say, I have followed the instructions to the letter multiple times without success, which leads me to believe that something is inherently wrong: either my SPM9745 is defective which I highly doubt, the SPM9745 is not compatible with my radio (highly doubtful too), or the MiniGRS is not compatible with the SPM9745.

Would you happen to know if:

SPM9745 is compatible w/DX6e?
SPM9745 is compatible with Aligns miniGRS?
Is DX6e compatible with miniGRS?

To add more to the this pile of nonsense, I just noticed my TRex (which hasn't even flown yet) has a broken ball link and a bent screw!!

@Align: WTF??

Thanks!

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11-24-2019 06:15 PM 20 days ago

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Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/

Wow!... Electronic after a crash... Very bad notice.

Step 1

Tx off
Rx with set button press , jumper on throttle, turn on and receiver led is red steady and led on satellite is flashing red.

... Check?

Step 2

With bind button press, turn on transmitter.
Wait Till TX show Bind and release button.

... Check?

I am trying to figure out on what step you are...

/Saludos cordiales,

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11-24-2019 11:38 PM 20 days ago

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noname

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Woodinville, WA

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THanks for your response. That's exactly what I've been doing.

Can you confirm if the SPM9745 indeed works as a satellite receiver?

Thanks!

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11-25-2019 01:08 AM 20 days ago

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Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
/

Yes.

This satellite is DSMX and should be no problem to bind with your dx6e...

So, I understand the step 1 is pass... Step 2 isn't.

That mean, TX doesn't resolve the binding step.

There is two ways to beging the step 2...

A. Pressing the bind button and turn On the TX.
B. Turn on the TX and Then Going to the menu Bind.

Either way, it is always better that you Pull out all servos from GRS mini on this first bind.

GRS mini has two led... Status and bind.

Some People put the antenna pointing to the GRS mini.
Other, do the binding process on a terrace, other with some steps separate from the GRS mini.

Spektrum binding is always a Pandora box.

/Saludos cordiales,

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11-25-2019 05:05 PM 19 days ago

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ticedoff8

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Morgan Hill, CA. USA

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If the sat / receiver fails to bind, try moving the transmitter at least 6' away from the receiver when you try to bind it.
Basically, your process should work - but repeat it with the TX farther away.
Pointing the antenna at the receiver, binding on the terrace or backyard may work - but for the same reason: the signal is weaker from the TX when you "point the antenna" at the receiver and being on the terrace may give you more distance between the RX and TX.
I have no idea why disconnecting the servos would help.

Or...
You can bind the receiver as a sat on a different system and then attach it back to the mini GRS.
Use your transmitter's Trex300 model (don't change it), attach the SPM9745 to a different Spektrum receiver (any that supports DSMX) to the sat port and bind it as you would normally.
It does not have to be connected to the mini GRS or installed in the Trex 300.
Just power up the Spektrum receiver with the bind plug installed and bind the receiver and sat

Assuming it binds, remove the SPM9745 and move it back to the mini GRS's sat port.
Do not try to rebind it!
Power up the mini GRS and the SPM9745 should sync-up with the DX6e and you should have all normal functions on the mini GRS

There is no "magic" that links an FBL controller to the transmitter.
The "model match" magic is between the receiver and the transmitter.
The only thing "special" is when the FBL controller sends a signal to the receiver putting it into the bind mode. After that, it is all between the receiver and the transmitter.

If you need more help, RTFM: http://www.align.com.tw/download-en/minigrs/
The spec say it will support DSM2/DSMX and gives examples+ > ÷
Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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11-25-2019 06:37 PM 19 days ago

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noname

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Woodinville, WA

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Thanks for your response!

I don't have any other Spektrum device aside from a Blade micro heli, which can't host an external satellite Rx.

I have tried pretty much all the possible permutations of steps in the binding procedure including attempting to bind from the setup menu instead of using the button, and still no luck

One interesting thing is this:

When I power-on the MiniGRS, the Satellite is rapidly flashing, and as soon as I start the binding procedure and immediately in sync of when the 'Binding Failed' error appears, the satellite stops flashing. This indicates that some sort of communication was indeed established.

Is there any way to collect a dump/log file and store it on the SD card for further inspection?

At this point, I believe this is a real issue and not a user mistake. How can I loop in the folks from Align on this? ... yeah, not pilots or sales dudes, but more of the big guys with debuggers and DSMX protocol spoofers?

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11-25-2019 07:06 PM 19 days ago

0Post 9

ticedoff8

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Morgan Hill, CA. USA

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As I said, the problem is not between the mini GRS and the DX6e.
You will get little to no help from "Align".

The problem is between the SPM9745 and the DX6e. They are not binding.
Call Horizon Hobby tech support. They are the Spektrum gurus.
It may be a setting in the DX6e or a bad SPM9745.+ > ÷
Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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11-29-2019 05:56 PM 15 days ago

0Post 10

noname

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Woodinville, WA

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Horizon is pointing the finger at Align

... I guess we'll have to wait and see

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11-29-2019 08:05 PM 15 days ago

0Post 11

ticedoff8

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Morgan Hill, CA. USA

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If the receiver is going into bind mode (fast blinking), then the mini GRS is communicating with the SPM9745.

If you have any friends that can let you use their AR-series Spektrum receiver, you can plug in the SPM9745 as a sat and then bind that pair to the DX6e.
That will tell you if it is a SPM9745 or a DX6e problem+ > ÷
Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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