Another two modules thread, lol. TH9XB - ??

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Rad
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Another two modules thread, lol. TH9XB - ??

Post by Rad »

Hi! I've been searching in the forum before asking, but there are loads of info and its a bit hard to digest when you are lost like me.

So, I have a Flysky TH9Xb with a 9Xtreme, four 3-pos switches, and one potentiometer is now a 6 post switch.

Now I want to install an internal module. I want to have more channels in my radio, and to be able to control 2 tanks at the same time, and I need telemetry.

So I did my homeworks and I started reading in forums and I saw the frsky DHT DIY module seems the way to go. I also saw where I need to solder the connectors in the 9xtreme board, but I have some questions.

The 3 pos switch that comes with the DHT is needed? What does it do? I've seen some people installing it and some not.

I dont want to add more extra antennas to the radio. Would it work if the antenna is inside the radio (In case it fits, I dont know if it is small enough) I know the frsky module gives me something like 2 kms range or so, but I drive my tanks maximum 25m away from me, so I dont think it would be a big problem to lose some range...

I also saw that the frsky has model matching which is a great thing that I might use, BUT thats only with the X serie transmitters and receivers, and the X receiver wont work with the D module, right?

And last: After swiming deep and deep in the forum I saw that there is a multi protocol module. It looks great and using it will make me able to use most kinds of receivers right? So I could install it instead of the DHT receiver and have model matching with the X frsky receivers... But the last question here... Does this module have telemetry?

Thanks for your time. :)
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Re: Another two modules thread, lol. TH9XB - ??

Post by jhsa »

Rad wrote: Mon Mar 20, 2017 6:31 am

The 3 pos switch that comes with the DHT is needed? What does it do? I've seen some people installing it and some not.
The switch swithes between "D" mode, "V" mode, and the other position is to flash the DHT with new firmware, which was never needed. So, if you only use the "D" (Telemetry) receivers, you can just remove the switch. Not needed.
I dont want to add more extra antennas to the radio. Would it work if the antenna is inside the radio (In case it fits, I dont know if it is small enough) I know the frsky module gives me something like 2 kms range or so, but I drive my tanks maximum 25m away from me, so I dont think it would be a big problem to lose some range...
Yes, you can place the antenna inside the radio. Place it a 90 degrees to the other antenna. So for example horizontally at the top of the radio, inside the case..
And last: After swiming deep and deep in the forum I saw that there is a multi protocol module. It looks great and using it will make me able to use most kinds of receivers right?


The MultiProtocol module will work with all supported protocols. That includes Frsky D and Frsky X, Flysky, etc. Here is a list of the supported ones.

https://github.com/pascallanger/DIY-Mul ... Details.md
So I could install it instead of the DHT receiver and have model matching with the X frsky receivers...
Yes, you could. But I am not sure if it supports the X protocol with the version of the firmware it ships with. It might have an older version. Better you also buy an UsbAsp programmer, just in case. It MUST be a 3.3V programmer, as a 5V one will destroy the multi module. Be very careful with this and in case of doubt ask for advice on the MultiProtocol RC Groups thread

https://www.rcgroups.com/forums/showthr ... le/page569
But the last question here... Does this module have telemetry?
Yes, it does support telemetry.

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Re: Another two modules thread, lol. TH9XB - ??

Post by MikeB »

Do you need telemetry from both tanks at the same time? If so, this is not supported by ersky9x as it only has a single set of telemetry values so telemetry from both will overwrite each other.
How many channels do you need in total?
A single XJT module handles 16 channels an may be bound to X8R receivers, one using channels 1-8 and the other using channels 9-16. Only one Rx is allowed to send telemetry.
An 'X' receiver will work with the DHT, but you won't get the "model match" feature as that is specific to the 'X' protocol.

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Re: Another two modules thread, lol. TH9XB - ??

Post by jhsa »

MikeB wrote: Mon Mar 20, 2017 10:09 am
An 'X' receiver will work with the DHT, but you won't get the "model match" feature as that is specific to the 'X' protocol.

Mike.
My post above wasn't correct about this, so I deleted the relevant part as you answered correctly here anyway.

Thanks

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Re: Another two modules thread, lol. TH9XB - ??

Post by Rad »

Hi, thanks for your fast answers.

Ok, so I will forget about that extra 3 pos switch, and great to know that there is enough room inside the radio for the extra antenna.


No, I dont need telemetry in both my tanks. Just in one is enough, and it would be for battery voltage monitoring only. Its a anoying to be worried about a lipo overdischarge and having to open and close the tank many times to check the battery at the battlefield is not good for the paint/accesories...

Im not sure how many channels I need. The more the better, of course. Im using some tank electronics that needs 8 channels, but adding extra servo functions would be great, is not a need but its a great add.

Also I like the idea of being able to control two-three tanks at the same time. I mean, not literally at the same time, just choosing in my radio which one I want to move, and I think I could do it just with the two modules mod. One frsky telemetry receiver for the fauvorite tank, and another turnigy for other tank.

I considered just plugging the XJT module at the back and done, but its a bit pricey, the receivers are more expensive than the turnigy ones, and I dont want to stop using them, they make a perfect job for me.


So, what do you recommend me to do? Install a frsky DHT DIY module inside the radio or the multi protocol one? Whathever I install I would like to install it inside the radio, not in the module bay. The bind button at the DHT module its a big win, I dont know if I could add some kind of extra bind button to the multiprotocol board.

And the big point for the mutiprotocol, is obviously the multi protocol feature, and I also I could use the X receivers having model matching...

So I dont know what to do right now. Some advice needed!


And again thanks for your time :)
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Re: Another two modules thread, lol. TH9XB - ??

Post by bob195558 »

Hi Rad,
Just for more info about using two XJT transmitter at the same time with the 9Xtreme Radio: (viewtopic.php?f=126&t=8226).
You can choose which module you want telemetry from and the XJT (PXX protocol) can be used as a DJT (PPM protocol) module too.
I use two module with my Taranis radio using D-series receivers at the same time, one with PXX protocol and the other with PPM protocol.

Added edit: also here is on openrcforums a list about using XJT and DJT modules
with erSky9x firmware (viewtopic.php?f=126&t=8226&p=110125#p110125).

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Last edited by bob195558 on Mon Mar 20, 2017 12:16 pm, edited 2 times in total.
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Re: Another two modules thread, lol. TH9XB - ??

Post by jhsa »

You don't need a bind button with the multiprotocol module. Bind is selected in the protocol menu with the 9xtreme board..

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Re: Another two modules thread, lol. TH9XB - ??

Post by Rad »

jhsa wrote: Mon Mar 20, 2017 11:26 am You don't need a bind button with the multiprotocol module. Bind is selected in the protocol menu with the 9xtreme board..

João
Wow, if with the multiprotocol board I dont need a button to bind, and I can use most kinds of receivers, then I see no reason to install a DHT frsky module in my radio...

So then I think I need this, Flysky version: http://www.banggood.com/2_4G-CC2500-A71 ... 48377.html
(Note it says there will be a V2, so it might be a good idea to wait a bit until it is out)

Then the programmer: http://www.banggood.com/USBASP-USBISP-3 ... mds=search (But I need to remove a resistor for not frying the board, ok)

And then, for having telemetry and model matching I need this kind of reveivers: https://hobbyking.com/en_us/catalog/pro ... r-standard

And I wonder if I can use this turnigy modules too, but I dont think so.
https://hobbyking.com/en_us/turnigy-ia1 ... -sbus.html

I think that's all what I need... Well, I need to know where to solder the module on my 9xtreme. Is the same like the DHT?
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Re: Another two modules thread, lol. TH9XB - ??

Post by bob195558 »

I believe the FrSky Telemetry system is the best for sensors and cost.
I suggest if one is thinking of purchasing the DHT, to consider the XJT external module
and installing it as an internal if needing a second transmitter module: (viewtopic.php?f=126&t=8226).
The Multiprotocol TX Module in an option to consider, how many channels do you need for each tank model, 6 ?

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Re: Another two modules thread, lol. TH9XB - ??

Post by jhsa »

The multi protocol module can work as a XJT or as DJT / DHT..

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Re: Another two modules thread, lol. TH9XB - ??

Post by Rad »

bob195558 wrote: Mon Mar 20, 2017 4:41 pm I believe the FrSky Telemetry system is the best for sensors and cost.
I suggest if one is thinking of purchasing the DHT, to consider the XJT external module
and installing it as an internal if needing a second transmitter module: (viewtopic.php?f=126&t=8226).
The Multiprotocol TX Module in an option to consider, how many channels do you need for each tank model, 6 ?

Bob B.
Hi! I saw your tutorial in the other post. A couple of days ago I wondered if I could install a XJT as an internal module, and yes, according to your tutorial is possible. But after seeing the multi protocol board I think I will stick with it unless you, experienced guys tell me other thing. Its great to be able to keep using my cheap turnigy receivers and all kind of frsky ones.

For every tank I need 8 channels, that's just for the tank functions. If I want to add more extra options like opening hatches or movement in the tank commander I need more.

About telemetry sensors, I think I will only need this one: https://hobbyking.com/en_us/frsky-batte ... ystem.html
So yeah, that's cheap. :D
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Re: Another two modules thread, lol. TH9XB - ??

Post by jhsa »

Rad wrote: Mon Mar 20, 2017 3:53 pm
So then I think I need this, Flysky version: http://www.banggood.com/2_4G-CC2500-A71 ... 48377.html
(Note it says there will be a V2, so it might be a good idea to wait a bit until it is out)
That's the one.
Then the programmer: http://www.banggood.com/USBASP-USBISP-3 ... mds=search (But I need to remove a resistor for not frying the board, ok)
Ask on the multiprotocol thread about this programmer.. I think some people did have some issues.. People there wil give you some good advice.
And then, for having telemetry and model matching I need this kind of reveivers: https://hobbyking.com/en_us/catalog/pro ... r-standard
Yes, but with the multiprotocol module i believe you can have the model match feature even with the D receivers, or even on the other protocols.. I need to try that :) Will let you know later or tomorrow..
And I wonder if I can use this turnigy modules too, but I dont think so.
https://hobbyking.com/en_us/turnigy-ia1 ... -sbus.html
I think those receivers are supported by the multiprotocol module.. Please check the protocols list I have linked a few posts above..

Yes, basically the same.. If you want to use it internally, use the PPM2 connection, and COM2 for the telemetry.

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Re: Another two modules thread, lol. TH9XB - ??

Post by Rad »

jhsa wrote: Mon Mar 20, 2017 6:26 pm

Yes, but with the multiprotocol module i believe you can have the model match feature even with the D receivers, or even on the other protocols.. I need to try that :) Will let you know later or tomorrow..


That would be amazing, let me know when you find it. Dont worry, Im not in a rush.



I checked the list and I did not find the module on it, but after another look, yep, it seems compatible. The model name is AFHDS2A

So definitelly this multiprotocol module looks like the way to go.


The only thing that I dont understand is, if some guys managed to do this micro board compatible with hundreds of diferent brands, why some frsky modules are not compatible with all frsky receivers, or why the flysky 8ch module is not compatible with the 10 channels receiver?
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Re: Another two modules thread, lol. TH9XB - ??

Post by jhsa »

Different protocols??

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Re: Another two modules thread, lol. TH9XB - ??

Post by Kilrah »

Rad wrote: Mon Mar 20, 2017 7:48 pm why the flysky 8ch module is not compatible with the 10 channels receiver?
Because when the 8CH module was manufactured the 10CH protocol didn't exist, it was developed later. So the old module doesn't know about it, and as it's not upgradable it never will.
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Re: Another two modules thread, lol. TH9XB - ??

Post by Rad »

jhsa wrote: Mon Mar 20, 2017 6:26 pm

Yes, but with the multiprotocol module i believe you can have the model match feature even with the D receivers, or even on the other protocols.. I need to try that :) Will let you know later or tomorrow..
Well, I asked at Rc groups a couple of days ago but no one replied to me, so I'll ask here my (I hope) last questions.
Did you try the model matching with other modules? If model matching works with all receivers I would buy the Flysky AFHDS 2A ones. 10 Channels, telemetry and the price is more affordable. :)

Is the multi protocol module range OK? I've read somewhere that is only about 250 meters or so.

Do I need to buy the 3v programmer and do I need to do the bridge soldering?

And thats all. Thanks!
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Re: Another two modules thread, lol. TH9XB - ??

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Bump!
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Another two modules thread, lol. TH9XB - ??

Post by Daedalus66 »

The range of the Multi 4in1 module varies with the protocol. As the name suggests, the module contains the four main chips used for RC. Range varies among them.

I can speak knowledgeably only about DSM2/DSMX, which has range comparable to Spektrum full range transmitters (well over 1km), and the many protocols for small helicopters and multirotors, which are generally limited to about 250m. I would expect to get full range results for FrSky and FlySky protocols but can't speak first hand. Bottom line: you'll have to ask specifically about range for your protocol.

Only a few of the protocols support receiver number (Model Match is a Spektrum trade name). You'll have to ask about this specifically but I see no evidence that AFHDS 2A supports it.
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Re: Another two modules thread, lol. TH9XB - ??

Post by Rad »

Daedalus66 wrote: Wed Mar 29, 2017 8:36 pm The range of the Multi 4in1 module varies with the protocol. As the name suggests, the module contains the four main chips used for RC. Range varies among them.

I can speak knowledgeably only about DSM2/DSMX, which has range comparable to Spektrum full range transmitters (well over 1km), and the many protocols for small helicopters and multirotors, which are generally limited to about 250m. I would expect to get full range results for FrSky and FlySky protocols but can't speak first hand. Bottom line: you'll have to ask specifically about range for your protocol.

Only a few of the protocols support receiver number (Model Match is a Spektrum trade name). You'll have to ask about this specifically but I see no evidence that AFHDS 2A supports it.
Hi thanks for your reply. My range questions comes from some forums and even ebay. If you find the multiprotocol board on ebay, you can find the seller himself says this:

CC2500: V8FR receiver with Frsky protocol,about 240m.
A7105: WLToys V911 helicopter with Flysky 8 ch receiver,based on Flysky protocol,about 240m.
CYFR6936: Spektrum MCPX helicopter with DSM2 protocol,Walkera SUPERCP helicopter with DEVO protocol,about 200m,
NRF24L01: WLToys V977 helicopter with KN protocol,use Walkera DEVO transmitter,about 200m (If equipped with MCU baseplate,only 50m).
Hisky HCP100S helicopter with Hisky protocol,about 70m.

So thats why I was so worried about range.
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Re: Another two modules thread, lol. TH9XB - ??

Post by Kilrah »

That text dates back from nearly a year, both the module hardware and the software has changed quite a bit since.
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Re: Another two modules thread, lol. TH9XB - ??

Post by jhsa »

Today, if the frsky protocol had only 240 meters of range I would say you would have some bad hardware somewhere.
I have tested my multi module with FrskyD protocol at 1.5Km (not flying), ground level. The V protocol should in theory go even further than that.

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Re: Another two modules thread, lol. TH9XB - ??

Post by Rad »

Ok, good to now the range is ok. I was worried of such a short range specially because I want to place the antenna inside the radio and then I could have a shorter range than that.

So then I understand updating the module firmware is a must.
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