XJT Telemetry Module connection to Sky9x Rev3 Board

Cant get your radio to work? General Hardware issues?
Post Reply
User avatar
bob195558
Posts: 2108
Joined: Sun Dec 16, 2012 7:24 pm
Country: United States
Location: New England, Vermont
Contact:

XJT Telemetry Module connection to Sky9x Rev3 Board

Post by bob195558 » Fri Oct 11, 2013 5:21 pm

:?:

In the photograph, is the cable wiring correct ? :?:

I see the Red wire from the Sky9x Board's TXD connection going to the GND (Ground) of the XJT Telemetry Transmitter.
It dose not look right to me. :?:

And I see the Black wire from Sky9x Rev3 Board's GD connection is connecting to the + 5V of the XJT Telemetry Transmitter.
This also dose not look right to me. :?:

The White wire from the Sky9x Board's RXD connection is connecting to the Rxd of the XJT Telemetry Transmitter.
I am not sure this is correct too. :?:
101_XJT to Sky9x Telemetry.JPG
I have not powered these devices up, because when plugging the black four pin plug into the FrSky XJT Module,
I saw the black wire going to the + 5V and the red wire going to the ground connection of the XJT Telemetry Module.
102_XJT to Sky9x Telemetry.JPG
Is the Sky9x Rev3 telemetry cable wired correct ?
:(
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.

3D Printing upgrades with (CR10 3D Printer): (http://openrcforums.com/forum/viewforum.php?f=85).


User avatar
MikeB
9x Developer
Posts: 16556
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by MikeB » Fri Oct 11, 2013 5:59 pm

I'd expect:
XJT SKY
RXD TXD
TXD RXD
GND GND

I haven't tried this as I have the internal wiring for the (modified) DJT module using pin 5 of the module connector available and this connects directly to the internal SPort data signal of the XJT. Then, of course, I'm running the latest code that supports the XJT with PXX and SPort!

Mike.
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

SkyNorth
Posts: 958
Joined: Tue Dec 27, 2011 11:40 am
Country: -
Location: Mansfield , Ontario

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by SkyNorth » Fri Oct 11, 2013 6:46 pm

The color of the wires is not important

The 4 pin connector is upside down on your RF module , the two wires beside each other go to the RXD,TXD connections,
The one separated by the open pin (white) is the Ground , and should be at the bottom

-Brent

User avatar
bob195558
Posts: 2108
Joined: Sun Dec 16, 2012 7:24 pm
Country: United States
Location: New England, Vermont
Contact:

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by bob195558 » Sat Oct 12, 2013 3:28 am

:|
I still think there is a problem when I turned the 4 pin connector plug around.

It makes the:

Red wire from the Sky9x Board's TXD connection to the Rxd pin of the XJT Telemetry Transmitter.
This looks good! (Sky9x: TXD to Rxd of the Telemetry Module XJT)

But the Black wire from Sky9x Rev3 Board's GND is connect to the Txd pin of the XJT Telemetry Transmitter.
I think this looks incorrect!
Shouldn't this GND be connected to the GND of the Telemetry Module XJT?
(Like: Sky9x GND to GND of the Telemetry Module XJT)

And the White wire from the Sky9x Board's RXD is connected to the GND pin of the XJT Telemetry Transmitter.
I think this looks incorrect also!
Shouldn't this pin be connected to the Txd of the Telemetry Module XJT?
(Sky9x RXD to Txd of the Telemetry Module XJT)

:idea: Should I switch the Black wire with the White wire on the Three Pin Sky9x Plug?
This would make the connections like Mike has shown them.
XJT / Sky9x
RXD to TXD
TXD to RXD
GND to GND

:?: Is this what I should do?

100_XJT to Sky9x Telemetry.JPG
The 4 pin connector plug turned around.
Edit October 13, 2013: In this photo the 4 pin connector plug's
Black and White wires need to be switched with each other.
113_ older Sky9x_mainboard_2012.jpg
Older Sky9x mainboard
112_Sky9x Rev3 Replacement Board.jpg
Sky9x Rev3 Replacement Board
105_XJT to Sky9x Telemetry.JPG
Sky9x Rev3 Replacement Board
Last edited by bob195558 on Sun Oct 13, 2013 12:49 pm, edited 1 time in total.
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.

3D Printing upgrades with (CR10 3D Printer): (http://openrcforums.com/forum/viewforum.php?f=85).

cae
Posts: 45
Joined: Thu May 17, 2012 10:20 am
Country: Australia
Location: Sydney,NSW

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by cae » Sat Oct 12, 2013 7:32 am

Bob...

Yes, you should make the wiring as Mike as suggested.
It might be easier to change the white and black wires at the four pin end, but either end would do.

Colin.


Clivew
Posts: 338
Joined: Tue Dec 27, 2011 8:08 pm
Country: -
Location: Stroud, Glos, England

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by Clivew » Sat Oct 12, 2013 10:34 am

It would be nice to modify the XJT module internally to get the data through (Mike?) :)

User avatar
MikeB
9x Developer
Posts: 16556
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by MikeB » Sat Oct 12, 2013 10:38 am

No need. The XJT already sends SPort data through on pin 5. If you have already wired pin 5 for a modified DJT then the XJT just plugs in and works, as long as you load a recent revision of ersky9x that has PXX and SPort support. I've been running this OK.

Mike.
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

User avatar
bob195558
Posts: 2108
Joined: Sun Dec 16, 2012 7:24 pm
Country: United States
Location: New England, Vermont
Contact:

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by bob195558 » Sat Oct 12, 2013 3:53 pm

:D
Hi Mike,
Thank you for your helping, I have only recently been changing over to the FrSky Transmitters
and have not studied on the pin 5 modification yet.
I want use the S-Port, so I need to know more about how to make mods.
The XJT has an external S-Port plug using the servo plug.
Can this be used in place doing the pin 5 mod? I think this is what Clivew was referring to.

:D Colin... thank you for verifying the wiring changes.

Because I had the 4 pin connector plug upside down on my XJT module,
I have super glued a piece of Round wooden Tooth-Pick to the upper end of the
4 pin connector plug, so that I will never be able to plug this in upside down again.

I also, with my 5 pin 9x TelemetrEZ board plug, I cut a small strip plastic at an angle so it would wedge into the upper pin hole,
so to block it, again so that I will not be able to plug this plug in upside down.

:D
114_XJT to Sky9x Telemetry.JPG
This is how I have it now, Looks Good!
:D
115_4 pin Plug .JPG
Super glued a piece of Round wooden Tooth-Pick to the upper end of the
4 pin connector plug. I use a black marker to color it.
:D
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.

3D Printing upgrades with (CR10 3D Printer): (http://openrcforums.com/forum/viewforum.php?f=85).

User avatar
MikeB
9x Developer
Posts: 16556
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by MikeB » Sat Oct 12, 2013 4:04 pm

All you need for the SPort from the XJT to a SKY board is a wire from pin 5, on the back board, the the RX data pin of the serial connector. No track cuts.

Mike.
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

Clivew
Posts: 338
Joined: Tue Dec 27, 2011 8:08 pm
Country: -
Location: Stroud, Glos, England

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by Clivew » Sat Oct 12, 2013 9:21 pm

Installed latest R180, and the telemetry now works, thanks Mike!
Not sure how to reset the altitude (X8R+frsy high precision vario)?
And why does it tell me to update the co-processor every time I
switch the transmitter on? I have 0104 co-pro, is there a later one?
Thanks!

Clive

User avatar
MikeB
9x Developer
Posts: 16556
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by MikeB » Sat Oct 12, 2013 9:29 pm

Latest co-processor is 06. It is on the google code page under TinyApp. Ask if you need any help getting this flashed.

On the telemetry page showing ALT and T1 etc. just press EXIT LONG to zero the altitude value.

Mike.
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

Clivew
Posts: 338
Joined: Tue Dec 27, 2011 8:08 pm
Country: -
Location: Stroud, Glos, England

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by Clivew » Sat Oct 12, 2013 10:47 pm

Thanks Mike, all sorted, except for the vario reading about 10% both in metric and imperial of what it should be,
maybe I have one of those faulty ones?
Only other minor detail, the beeper changes to "warbley" when in pxx mode :)

Clive

User avatar
MikeB
9x Developer
Posts: 16556
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by MikeB » Sat Oct 12, 2013 11:07 pm

I'll check out the vario. Just so many different things to test. My only high precision, Sport compatible vario is in a plane, but with a D8R-II controlled from a Taranis in D8 mode!

What exactly do you mean about the beeper, and is this the actual beeper rather than the speaker used for voice?

Mike.
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

Clivew
Posts: 338
Joined: Tue Dec 27, 2011 8:08 pm
Country: -
Location: Stroud, Glos, England

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by Clivew » Sat Oct 12, 2013 11:20 pm

It's not the vario Mike, it's fine in Taranis.
The warbley sound only happens with PiSpkVoice (the only setting the haptic works on!)
and ONLY when pxx is selected.
Have a nice Sunday anyway :oops:

User avatar
MikeB
9x Developer
Posts: 16556
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by MikeB » Sat Oct 12, 2013 11:36 pm

Looks like I had a /100 where I should have a /10.
Should be fixed in the next revision.

Mike.
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

Clivew
Posts: 338
Joined: Tue Dec 27, 2011 8:08 pm
Country: -
Location: Stroud, Glos, England

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by Clivew » Sat Oct 12, 2013 11:57 pm

Perfick!
The bleeper issue doesn't matter to me, I just thought it might be indicative of something else going on.
G'night

Clive

User avatar
bob195558
Posts: 2108
Joined: Sun Dec 16, 2012 7:24 pm
Country: United States
Location: New England, Vermont
Contact:

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by bob195558 » Sun Oct 13, 2013 3:00 am

:)
Hi Mike,
In this photo dose this white wire for the S-Port connection, show what you were saying for the
Pin 5 of the 9x back-board, connect to the Sky9x board serial connector?
I plugged into the COM2, J21, 1, RXD-IND of the Sky9x board to the bottom Pin 5 of the 9x back-board.
Is this the correct way to connect the Pin 5 mod for the S-Port? :?:
118_Pin 5 Mod.JPG
I plugged into the COM2, J21, 1, RXD-IND of the Sky9x board to the bottom Pin 5 of the 9x back-board.
121_Sky9x Com1 Com2.JPG
COM2, J21, 1, RXD-IND of the Sky9x Rev3 Board
122_Sky9x com1 com2.JPG
Sky9x Rev3 Board
119_Sky9x Rev 3 Board .JPG
Sky9x Rev3 Board
:)
Add Edit: Here is a source for some more info: (http://www.smartieparts.com/shop/index. ... page&id=21).
Last edited by bob195558 on Sun Oct 13, 2013 1:25 pm, edited 1 time in total.
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.

3D Printing upgrades with (CR10 3D Printer): (http://openrcforums.com/forum/viewforum.php?f=85).

User avatar
MikeB
9x Developer
Posts: 16556
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by MikeB » Sun Oct 13, 2013 8:27 am

Wiring looks correct.
As the firmware is still developing for this only COM1 will support the SPort in released revisions. COM2 should support it in the next revision.
I have to change the baud rate and I have only put the code in for COM1 so far to get it working at all.

Mike.
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

User avatar
bob195558
Posts: 2108
Joined: Sun Dec 16, 2012 7:24 pm
Country: United States
Location: New England, Vermont
Contact:

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by bob195558 » Sun Oct 13, 2013 8:11 pm

:)
Thank You Mike!

I have the original erSky9x firmware on my Sky9x Radio and I believe I can use eepskye.exe to update to the newest revision erSky9x firmware.

I could before I Close up the Sky9x Radio, is to tap into the other COM1, J10, 1, RXD-IND wire. :idea:
Is it OK for me to Tap into the same Sky9x board's COM1, J10, 1, RXD-IND connection with both the Pin 5 of the back board and the TXD of the XJT telemetry module?

:?:
123_Sky9x COM1  J10  1  RXD IND connection.JPG
Is it OK for me to Tap into the same Sky9x board's COM1, J10, 1, RXD-IND connection with
both the Pin 5 of the back board and the TXD of the XJT telemetry module?
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.

3D Printing upgrades with (CR10 3D Printer): (http://openrcforums.com/forum/viewforum.php?f=85).

User avatar
MikeB
9x Developer
Posts: 16556
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: XJT Telemetry Module connection to Sky9x Rev3 Board

Post by MikeB » Sun Oct 13, 2013 8:24 pm

Since the SPort is a single wire bus, I would expect them to be the same physical signal, but I haven't checked. Would be worth a continuity check on the XJT.

Mike.
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!


Post Reply

Return to “Hardware”