V977 for adventurous!

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10 May 2014 01:34 - 10 May 2014 01:35 #23096 by joeclone
Replied by joeclone on topic V977 for adventurous!

victzh wrote: Here you go but seriously, tie it down! When I first try a new protocol on small quadcopters they usually end up in a weird place, sometimes ruining something on the way.


Wouldn't it be better to do first tests with blades or props off that way you can be extra safe. And Victzh great work thumbs up!
How to determine if I've NRF+ or not?
Last edit: 10 May 2014 01:35 by joeclone.

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10 May 2014 05:05 #23100 by victzh
Replied by victzh on topic V977 for adventurous!
@dc59, you can't find it because there is none. It has 4 channels plus idle up flag which makes heli to change its internal throttle and pitch curves. At least that's how I understood it from the document translation.

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10 May 2014 05:13 #23101 by victzh
Replied by victzh on topic V977 for adventurous!
@joeclone, you've probably have nRF+, I've never seen just nRF. They were phased out several years ago, so the probability is very low.

If you're curious, you can try to read the marking on a chip, it should read nRF24L01+, plus is very small, so have a good magnifier.

Programmatically nRF24L01 and nRF24L01+ are indistinguishable, which would be problematic if I ever saw nRF34L01 in the wild.

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10 May 2014 10:35 #23107 by dc59
Replied by dc59 on topic V977 for adventurous!

victzh wrote: @dc59, you can't find it because there is none. It has 4 channels plus idle up flag which makes heli to change its internal throttle and pitch curves. At least that's how I understood it from the document translation.


Is that mean I have no chance to change throttle and pitch curve in the future?
that's really bad news ~

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13 May 2014 00:19 #23165 by dc59
Replied by dc59 on topic V977 for adventurous!

victzh wrote: @joeclone, you've probably have nRF+, I've never seen just nRF. They were phased out several years ago, so the probability is very low.

If you're curious, you can try to read the marking on a chip, it should read nRF24L01+, plus is very small, so have a good magnifier.

Programmatically nRF24L01 and nRF24L01+ are indistinguishable, which would be problematic if I ever saw nRF34L01 in the wild.


Hi victzh,
Nightly build 91301b7(May 11) works OK.
But the servo movement is not so smooth,sometime it looks stocked around 0.5sec.
The channel setting seems something wrong, I set timer switch on ch3(THR) it not works, it must be set to ch1(AIL);On devo 7e,power on the TX it will show CH1 is 0%,safty value is -100%.
Thanks again for great job. :)

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13 May 2014 03:57 #23170 by joeclone
Replied by joeclone on topic V977 for adventurous!
Hey Victzh is it really true that throttle and pitch curves are not programmable on the tx, does swash setup values effect it's total pitch range?

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13 May 2014 07:32 #23178 by victzh
Replied by victzh on topic V977 for adventurous!
Yes, it happened to me as well. This sticking is characteristic not for all TX ids, I believe I use some of the frequencies the receiver can't use for some reason. I will investigate more.

WRT channel mapping - the protocol is defined as TAERG, so it may be conflicts with default mapping. Remap it in Mixers menu.

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13 May 2014 07:33 #23179 by victzh
Replied by victzh on topic V977 for adventurous!
@joeclone, pitch and throttle are bound to each other - you can't have totally separate pitch and throttle curves.

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13 May 2014 11:39 #23184 by joeclone
Replied by joeclone on topic V977 for adventurous!

victzh wrote: @joeclone, pitch and throttle are bound to each other - you can't have totally separate pitch and throttle curves.


So what does this mean in the Devo menus? It doesn't matter what value you put in the collective?

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13 May 2014 16:49 #23195 by victzh
Replied by victzh on topic V977 for adventurous!
I suppose (I still need to check) that the collective mixing for this heli is also done in RX, so it uses TAER directly. What happens, is when you turn on "Idle Up" it flattens its throttle curve and makes the pitch curve span to negative (harder than in "Normal"). You can make a model file with Idle Up switch (say, FMODE) simultaneously switch the heli's Idle Up channel (Channel 7) and pages in Complex mixer so that you have combined Throttle/Pitch curve have an Expo, for example. But you can not change relation between these curves.

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13 May 2014 16:51 #23196 by victzh
Replied by victzh on topic V977 for adventurous!
I'll try to make a reasonable model with all these things active and publish it here and in Models subforum.

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23 May 2014 11:47 - 23 May 2014 18:38 #23525 by ben1977
Replied by ben1977 on topic V977 for adventurous!
Hi, is it worth buying the Rtf version or the BNF is ok with the actual .ini file ? Thank you for your feedback :-)
Last edit: 23 May 2014 18:38 by ben1977.

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17 Jun 2014 15:27 - 18 Jun 2014 16:20 #24125 by joeclone
Replied by joeclone on topic V977 for adventurous!
I have a problem using the V977 rx board with my Devo 10, I can get it to bind but I can't get one of the aileron servo to reverse. As previously mentioned there's no separate pitch channel so does this mean both aileron servos are tied to one common channel? How do I reverse one of the servo direction?
Last edit: 18 Jun 2014 16:20 by joeclone.

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18 Jun 2014 16:18 #24145 by joeclone
Replied by joeclone on topic V977 for adventurous!
How is it possible to make hover debugging to work with Deviation? It is enabled by a push of a button with the stock tx.

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18 Jun 2014 16:25 #24146 by victzh
Replied by victzh on topic V977 for adventurous!
This is yet unknown.

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18 Jun 2014 23:43 #24154 by joeclone
Replied by joeclone on topic V977 for adventurous!
Have you tried doing it when you build up the code?

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19 Jun 2014 03:10 #24155 by victzh
Replied by victzh on topic V977 for adventurous!
Frankly, no. The SPI traces were provided to me by ansheng, so I opened my TX but did not even solder to it. I will check this button when I get to soldering to it.

I attached my model file for V977 if you still need it.
Attachments:

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19 Jun 2014 15:25 #24157 by joeclone
Replied by joeclone on topic V977 for adventurous!
Yes thank you, and hope you get a chance to look into it further

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20 Nov 2014 08:11 - 20 Nov 2014 08:14 #26474 by Pmo
Replied by Pmo on topic V977 for adventurous!

victzh wrote: Frankly, no. The SPI traces were provided to me by ansheng, so I opened my TX but did not even solder to it. I will check this button when I get to soldering to it.

I attached my model file for V977 if you still need it.


Hi,

at this moment i use my devo12 for walkera,devo and spectrum modells. but i have this v977 and wisch to bind it with my devo.

may be i understand something wrong. can i use it without modifikations?? my devo ist still orginal and i use older firmware from here.

or did i need some modul for v977?? can i use the orginal transmitter from v977 to upgrade my devo to using it??

Paul

Where i get detail instruction to change sendingmodule in my devo.. im not electronik!!
Last edit: 20 Nov 2014 08:14 by Pmo.

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20 Nov 2014 09:50 #26476 by Babay
Replied by Babay on topic V977 for adventurous!

Pmo wrote: can i use the orginal transmitter from v977 to upgrade my devo to using it??

Yes, you can. I did it, and post about it in my blog . Content in russian language, but looking at the pictures, you'll understand everything.

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