Virhuck T915 - Protocol question

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22 May 2017 21:24 #62499 by jieboy
Virhuck T915 - Protocol question was created by jieboy
can anyone help me for finding out what protocol is a Virhuck T915 mini drone is Using , am trying to bind it on my Devo7e .Any help is very much appreciated .

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23 May 2017 20:11 #62510 by mwm
Replied by mwm on topic Virhuck T915 - Protocol question
The first step is figuring out which RF module it's using. We can do that if you can upload pictures of the chips in either the aircraft or the controller with enough resolution that we can read the markings.

Once you know which chip it is, you can sort the list of supported protocols by module and try the protocols for that module. Some protocol options affect binding, and there's no easy way to tell which so you're liable to have to try those as well.

Do not ask me questions via PM. Ask in the forums, where I'll answer if I can.

My remotely piloted vehicle ("drone") is a yacht.

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26 May 2017 02:44 - 26 May 2017 17:23 #62553 by jieboy
Replied by jieboy on topic Virhuck T915 - Protocol question
i hope this is clear enough

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Last edit: 26 May 2017 17:23 by jieboy.

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26 May 2017 02:59 #62554 by jieboy
Replied by jieboy on topic Virhuck T915 - Protocol question
thanks for the help btw

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26 May 2017 07:41 #62559 by viirrii
Replied by viirrii on topic Virhuck T915 - Protocol question
I also want to know this , what protocol is to use on devo 7e , i had tried all protocol available on 4 in 1 modules. and not able to bind a virhuck drone...
any help is very much appriciated

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26 May 2017 14:53 #62567 by Moeder
Replied by Moeder on topic Virhuck T915 - Protocol question
We have to be able to actually read the markings on the top two chips in the first picture. Try doing a close up using the macro feature of your camera.

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26 May 2017 15:03 #62569 by FDR
Replied by FDR on topic Virhuck T915 - Protocol question
...or simply post the markings of each chip here.

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26 May 2017 16:10 #62572 by ajtank
Replied by ajtank on topic Virhuck T915 - Protocol question
It seems the RF chip is a XN297 when comparing to the datasheet pinout.

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26 May 2017 17:14 - 26 May 2017 17:22 #62575 by jieboy
Replied by jieboy on topic Virhuck T915 - Protocol question
moeder I hope this is good enough , best I can do =) also no markings on the bigger chips
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Last edit: 26 May 2017 17:22 by jieboy.

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26 May 2017 19:59 #62578 by mwm
Replied by mwm on topic Virhuck T915 - Protocol question
The xn297 based protocols we support use the nrf24l01 chip.

You did say you've tried all those. Did you try the protocol option on them as well? I'm pretty sure some of the nrf24l01 protocols won't bind if the options are wrong.

If (or once) you've done that and it hasn't worked, the next step is to get a logic analyzer (they can be had for about $10 from ebay or banggood, though banggood sent me a motorcycle handbreak instead of the logic analyzer I ordered) and software (sigrok is free; check www.sigrok.org for supported hardware) and then capture the signals going to the xn297 as you bind and manipulate the various controls. FWIW, for about $30 you can get a combination logic analyzer/digital oscilloscope that's a lot more useful).

There are some good writeups on the forums, and sebydocky did a video on youtube.

Do not ask me questions via PM. Ask in the forums, where I'll answer if I can.

My remotely piloted vehicle ("drone") is a yacht.

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26 May 2017 20:17 #62581 by jieboy
Replied by jieboy on topic Virhuck T915 - Protocol question
i will try the protocol for the nrf24l01 chip one more time and if no luck i will try what you suggested , but it really sounds complicated , but bind or no bind i will give you update ...

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27 May 2017 08:38 #62599 by viirrii
Replied by viirrii on topic Virhuck T915 - Protocol question
mwm if I spent $30 on the tool I need to get the drone to bind on devo7e , that's twice as much as the drone cost .Virhuck T915 at Amazon rtf and free shipping is for $15.99. LoL plus I need to learn how to use the program that probably takes 2 weeks or more , don't get me wrong I do want to contribute even a lil help , it just that you guys are all wayyyyy out of my league . come to think of it I should of just kept my mouth shut.

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27 May 2017 20:51 #62613 by mwm
Replied by mwm on topic Virhuck T915 - Protocol question
So buy the cheap 8 channel analyzer for $10 or so. But I used it once on a $30 drone (that's where the JoySway protocol came from) and for my next project I needed analog capture so wound up buying the $30 one anyway. That does everything the $10 one does and a lot more, so I wasted that $10.

Do not ask me questions via PM. Ask in the forums, where I'll answer if I can.

My remotely piloted vehicle ("drone") is a yacht.

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30 May 2017 22:23 #62712 by jieboy
Replied by jieboy on topic Virhuck T915 - Protocol question
ok I guess am gonna have to buy a Logic Analyzer ...I wasn't able to bind it ...once I get the logic analyzer am gonna need your assistance to use it

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30 May 2017 22:28 #62713 by goebish
Replied by goebish on topic Virhuck T915 - Protocol question
Subscribed.
Let us know when you get your analyzer, and get prepared for some fine soldering ;)

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30 May 2017 22:33 #62714 by jieboy
Replied by jieboy on topic Virhuck T915 - Protocol question
oh soldering is not a problem to me , I think my soldering skill is well above average , using a logic analyzer is the problem but we will see , just need to save up for it

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