CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

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CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Zeeland » 15 Jan 2013, 12:44

Hi everyone, I've hacked 9XR to support FrSky telemetry protocol. If the hardware mod is done, flash the radio with ER9X or Open9X firmware. Be sure that you TAKE OFF the Tx module before flash the firmware.

This mod can also be done on 9X because they have same PCB.
Attachments
Converting 9XR to FrSky Telemetry.pdf
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Zeeland » 15 Jan 2013, 13:05

The original 9XR does not support the FrSky telemetry protocol but it is easy to make a telemetry mod since the 9XR has the same PCB with 9X. So this mod can also be done both on 9XR and 9X. Please be sure you have TAKEN OFF the Tx module BEFORE flash the firmware.
By far the most important thing is that it is being written by an end user. I am not an expert in electronics. The point is you do not need to be to make this mod! You simply need to be patient, and careful!
This is all the need:
FrSky DJT Tx module x1
500ohm resistor x1
220ohm resistor x2
Cable x 1
Heat Shrink Tubings
1-1.jpg
All things needed


This mod need to modify both 9XR and DJT. Now we start:

9XR PART

Remove the backside of 9XR then you can see the PCB with ATmega on it.
• Remove the two left-hand-most resistors as indicated in RED.
2-1.jpg
Remove the orginal resistor


• Solder your 'super fine' wires to pins 41 and 42 of the ATmega and connect to the top end of the 220 resistors and covered with Heat Shrink Tubing as shown.
3-1.jpg
Solder 220ohm resistor
Last edited by Zeeland on 15 Jan 2013, 16:40, edited 1 time in total.
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Zeeland » 15 Jan 2013, 13:36

• Take off the RF bord.
4-1.jpg
RP Part


• Connect the last Pin (which will connect to Rx pin of DJT) of RF board and the second Pin of the ATmega with 500ohm resistors and covered with Heat Shrink Tubing as shown.
5-1.jpg
Solder 500ohm resistor


The process on the 9XR is down.
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Zeeland » 15 Jan 2013, 13:48

DJT PART

• Open the DJT and connect the Pin 14 (the third form top on the left side) of Sipex 3232
6-1.jpg
Modify DJT


The DJT part is down.
Put everything back and power the transmitter. Flash the 9XR to er9X. Be sure to TAKE OFF Tx module when you flashing your radio.

http://9xforums.com/wiki/index.php/Flashing_your_9x

The telemetry data is displayed as below.
7-1.jpg


8-1.jpg
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Zeeland » 15 Jan 2013, 13:52

9-1.jpg
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby ShowMaster » 15 Jan 2013, 22:40

How did you isolate the 9xr module pins from the 9XR backplane? They look to be grounded like the TH-9x module male pins are.
SM
Last edited by ShowMaster on 16 Jan 2013, 02:41, edited 1 time in total.
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Whitefangz » 16 Jan 2013, 00:11

Nice...Thanks alot!!!!...This will be my next mod...
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby dinislam1395 » 16 Jan 2013, 04:52

Thank you Zeeland. Been looking for this. I know this has been done to and is similar to the 9x mod but its nice to have a easy to follow instruction specifically for the 9xr. Well done.
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby ShowMaster » 16 Jan 2013, 07:45

So what about the isolating the required pins?
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby dinislam1395 » 16 Jan 2013, 11:54

Just finished doing mines. Everything working so I'm very happy. An alternative and a slightly easier connection in the DHT module.
Also only the latest firmware work as I flashed the stable one and it didn't work. Latest firmware [url]http://er9x.googlecode.com/svn/trunk/er9x-frsky.hex[url]
Image
Image
Image
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Zeeland » 16 Jan 2013, 12:32

ShowMaster wrote:How did you isolate the 9xr module pins from the 9XR backplane? They look to be grounded like the TH-9x module male pins are.
SM


Hi ShowMaster,

Sorry for the late reply.

For 9XR, the last Module pin which I used, is not grounded on PCB. This is one small difference between 9XR and 9X.

Regards,

K
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby ShowMaster » 16 Jan 2013, 15:14

I guess I'm confused, I thought you needed 2 pins on the Frsky module? One for TXD and one for RXD?
How is it you only need one wire, the last one and not the second one from the other end as well?
ImageUploadedByTapatalk1358320377.166548.jpg


ImageUploadedByTapatalk1358320490.717925.jpg

SM
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Zeeland » 16 Jan 2013, 17:03

No, you just need the Tx of DJT to "tell" 9XR the telemetry data. And the alarm be set on 9XR. :mrgreen:
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby ShowMaster » 17 Jan 2013, 00:23

Ok, but then you can't program the Frsky factory programmed alarm settings like A1 and A2 and RSSI?
They will not agree with the ones in the 9xr and the module could beep independently of the 9xr menus settings?
SM
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby rob.thomson » 17 Jan 2013, 03:13

Yes... You want tx and rx. That way the firmware can control the module!
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby helle » 17 Jan 2013, 05:27

hy,

look at ATmega64

Pins 41,42,43 go from top-Side via 3 Vias to buttom-side to U6 Pins 9,10,11,

hope a more simple way for Telemetry

load and zoom the 3 pictures

Helle
Attachments
ATmega 64 Pinout.jpg
9xr_main_pcb_bottom.jpg
9xr_main_pcb Detail.jpg
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby dinislam1395 » 17 Jan 2013, 09:11

rob.thomson wrote:Yes... You want tx and rx. That way the firmware can control the module!

what on the module dose it need to control ?
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby Zeeland » 17 Jan 2013, 09:49

ShowMaster wrote:Ok, but then you can't program the Frsky factory programmed alarm settings like A1 and A2 and RSSI?
They will not agree with the ones in the 9xr and the module could beep independently of the 9xr menus settings?
SM


Yes, just with TxD you can't program factory alarm settings, but I found they (factory alarm settings) are good enough for, if I can say, most of people. I set 9XR the same alarm level.

If you want RxD, just solder another wire and cut the PCB.

Thank you for reminding, I will put these in PDF.
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby ShowMaster » 17 Jan 2013, 11:20

I agree as mentioned in my #14 post.
The Frsky preprogrammed module settings as far as RSSI are very conservative and can be lowered to stop so many random beeps. At that point the tx firmware can take over to fine tune the alarm settings. The only other way to reprogram the Frsky module settings is to connect it to a computer with a Frsky USB cable and use their program.
I favor connecting both TXD and RXD.
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby rob.thomson » 18 Jan 2013, 03:32

With the frsky based firmware, on the radios you can also set custom alarms on the module on a per model basis.

This is very useful!
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby MadScientist » 18 Jan 2013, 21:52

If you are not using on screen telemetry this is not required correct? i was looking at usin the Frsky DHT-u system eventually.
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby ShowMaster » 18 Jan 2013, 23:23

Correct, the mod is only required the display the Frsky telemetry data on the 9XR LCD display as well as reprogram the modules factory settings and alarms.
The Frsky LCD control add on is a stand alone that does the same thing when plugged into the modules data connector.
No modifications needed.

The FLD-02 and a Frsky DJT may be a better setup?
This add on display is very small and since your tx can use the DJT module, to me, makes a much cleaner setup.
http://www.alofthobbies.com/lcd-display.html
The DHT-U when mounted on your tx is a lot of extra "junk" hanging on your tx.
Also it usually mounts in the 9x metal handle that the 9xd doesn't have, but there are mounting holes on the case back.
I see users of the DHT-u at my field and it just looks fragile and big to me.
But yes it works and just plugs into the module bay pins and it's ready to go.
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby kaivalagi » 19 Jan 2013, 23:23

I can appreciate the hard work gone into this so please don't take this the wrong way, but I am struggling to understand why you would go to so much trouble for this mod when having a separate screen high up would arguably be functionality better, and a lot lot easier to achieve? Is it more a case of wanting to use FrSky functionality within a single firmware solution or am I missing the point? Can someone please highlight the advantages for the above versus just plugging in a separate purpose built screen into the module pins? I can think of the following advantages for each (please correct me if wrong), is anything else worth knowing about too?

Rewire 9XR for same screen telemetry use
+ One screen for everything (might be considered a -ve)
+ Less clutter, no loose wires either
+ Lower cost (?)
+ Per model telemetry setup (?)

Use FrSky FDL-02 telemetry screen
+ Telemetry on a separate screen keeping the other screen free for transmitter info
+ Better placement of information for when flying
+ Simpler solution and no lengthy process to go through
+ Re-use for another transmitter is possible
+ Doesn't use additional EPROM memory for added code as it's is separate (?)
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby ShowMaster » 20 Jan 2013, 00:00

Once the Frsky telemetry data is integrated into the main tx display and current open9x or er9x FW, looking at the screen is not that important. So many alarm and sounds options that looking at the screen may not be required.
Of course the addition of a voice board mod is even better because it speaks the alarms.
If you can solder and troubleshot circuitry then the modifications are a big plus. If your more of an appliance operator, the Frsky plugin accessories are easy and work well.
Theirs no wrong option, jut good and better. Yes, the FLD-02 is easier to read higher mounted on the tx. It I suppose, could be used along with a fully modified radio, as a display only mounted higher to look at.
SM
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Re: CONVERTING 9XR TO FRSKY TELEMETRY (DJT MODULE)

Postby kaivalagi » 20 Jan 2013, 00:12

Thanks for that, so ultimately it's about having no clutter and more importantly decent configurable and audible alarms.....I am okay with a soldering iron and am good with electronics (elec eng @ uni, just a bit rusty these days...) but I am still not sure I would be willing to put all that time and effort in for the benefits...that being said I am a complete noob to the scene so I really just need to get using the gear and make my mind up based on real world use rather than theory :)

I may just wait to see what the new FrSky transmitters turn out to be like in terms of features and price and then either get a 12 channel and have the 9XR as a backup or mod my 9XR if I am not so flush...thanks again!
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