protocol for WL Heli V911-s

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12 Nov 2018 14:16 - 12 Nov 2018 22:24 #71732 by goebish
Replied by goebish on topic protocol for WL Heli V911-s
BirdBarber told his 4-in-1 module is from the very first batch, they were known to have the LNA issue with nrf24 & a7105 (not an problem for this protocol), but also, it doesn't use an actual nrf24l01 but a Si24R1 instead (this was confirmed by writing/reading back some registers), that may partially explains the issue.

Regarding crystal tuning, there's a possible fix that consists of replacing the 2 (small) capacitors located next to the nrf24l01 crystal in the 4-in-1 module:
www.deviationtx.com/forum/protocol-devel...-q303?start=80#56734
www.deviationtx.com/forum/protocol-devel...q303?start=100#56818
15nF worked in his case, but ymmv and in some case you may have to insert an extra resistor in serial between the nrf24l01 and the crystal (if you need to drift the frequency in the opposite direction), which is next to impossible.

And unlike what I told before, the manufacturer might have fixed the issue (ajtank was in contact with him).
Last edit: 12 Nov 2018 22:24 by goebish.

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12 Nov 2018 16:02 - 12 Nov 2018 16:26 #71733 by BirdBarber
Replied by BirdBarber on topic protocol for WL Heli V911-s
I read those posts about the early 4-in-1s and decided to order a new one to try. There were none in the US so I ordered from China. It's getting shipped epacket so it will probably be about 12-15 days.

Also, I remembered I have an E010 I bought as a parts donor for my E010S FPV. I tested it and it works with both my Devo 8S with individual NRF module and Devo 10 with 4-in-1. I'm not sure if the E010 had multiple different main boards like a lot of the cheap quads, but mine uses MJXq - E010 protocol. Does anybody know if mine is the one some people were having trouble binding with the early 4-in-1s?
Last edit: 12 Nov 2018 16:26 by BirdBarber.

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12 Nov 2018 17:07 #71734 by goebish
Replied by goebish on topic protocol for WL Heli V911-s
There's only one E010 protocol, the one you're using ;)

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12 Nov 2018 17:08 - 12 Nov 2018 17:11 #71735 by goebish
Replied by goebish on topic protocol for WL Heli V911-s
But as I said, your module works with your E010, but that doesn't mean it would work with another one:
www.deviationtx.com/forum/6-general-disc...e010-binding-problem
(newer module as this is a T8SG ...)
Last edit: 12 Nov 2018 17:11 by goebish.

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12 Nov 2018 19:50 - 12 Nov 2018 19:57 #71738 by BirdBarber
Replied by BirdBarber on topic protocol for WL Heli V911-s
Ahh... so the problem could be an out of spec 4-in-1 or E010. So what we actually need to repair is those damn cheap Chinese engineers that are trying to save half a dollar! I think that's done by swiftly and repeatedly hitting their wallet hand with a 19mm wrench. :evil:
Last edit: 12 Nov 2018 19:57 by BirdBarber.

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18 Nov 2018 07:29 #71784 by mtx63
Replied by mtx63 on topic protocol for WL Heli V911-s
Good work. Thanks to goebish and planger. Hope it's coming soon a nightly builds. Tested with taranis by a friend, mode 1 perfect.

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18 Nov 2018 09:20 - 18 Nov 2018 09:21 #71785 by goebish
Replied by goebish on topic protocol for WL Heli V911-s
I'll probably add it to the nightly as it is, but I need to add a note about those protocols using XN297L @ 250kbps in the manual ...
- i6S
- E010
- Q303
- V911s
- GD00X
Last edit: 18 Nov 2018 09:21 by goebish.

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19 Nov 2018 09:19 - 19 Nov 2018 10:08 #71806 by goebish
Replied by goebish on topic protocol for WL Heli V911-s

BirdBarber wrote: Ahh... so the problem could be an out of spec 4-in-1 or E010.


No, we can't blame the manufacturers, everything is in spec on their sides, but we're using a hack and sometimes it doesn't work.
e.g. if the nrf24l01 in the Tx has a crystal with -60 ppm deviation while the xn297 in the rx has +20 ppm, this is in spec according to their respective datasheets, but I doubt it will work ...
Last edit: 19 Nov 2018 10:08 by goebish.

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24 Nov 2018 23:15 #71878 by captjack01
Replied by captjack01 on topic protocol for WL Heli V911-s
Howdy
Great job guys with figuring this out. Any idea when it will get to the nightly build?
Thanks
John

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25 Nov 2018 19:51 #71883 by goebish
Replied by goebish on topic protocol for WL Heli V911-s
Can your check the test build ?

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25 Nov 2018 22:01 #71889 by captjack01
Replied by captjack01 on topic protocol for WL Heli V911-s
Sure will , I take it is just like updating a nightly?
Thank you
John

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25 Nov 2018 22:02 #71890 by goebish

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27 Nov 2018 03:36 - 27 Nov 2018 03:38 #71900 by BirdBarber
Replied by BirdBarber on topic protocol for WL Heli V911-s
Goebish,

Would it be possible for you to make a temporary version with access to the 14 flags so I can test to see if there is a 3G function?

I'm thinking since this is basically a beginner version of the WL V988 that has 3G and 6G that if they happened to re-use the FBL software from the V988 on the V911S then maybe the 3G function is still in there and they just didn't want it available in the beginner TX because it would cause a crash if they enabled it accidentally.

If not, I've got an iRangex module on order for my Taranis and Pascal might be able to do it for me after I receive it. It will probably be at least 2-3 weeks until it arrives.

Also, my new 4-in-1 to replace the original release 4-in-1 in my Devo 10 is not here yet and will probably be at least another week. I'll install it and resume testing when it arrives.
Last edit: 27 Nov 2018 03:38 by BirdBarber.

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27 Nov 2018 11:37 #71901 by goebish
Replied by goebish on topic protocol for WL Heli V911-s
Here is a test build for Devo12 with 2 extra protocol options for V911S, P1 & P2, ranging from 0 to 8, check out if a value enables "acro" mode.
www.dropbox.com/s/zohjsc8qnx3d75o/deviat...0.0-cfdf388.zip?dl=1

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27 Nov 2018 22:39 - 27 Nov 2018 22:42 #71911 by BirdBarber
Replied by BirdBarber on topic protocol for WL Heli V911-s
The only transmitter I have that is working with the V911S is my 8S with independent NRF24L01 board, my 4-in-1 boards are from the original batch and aren't binding with the V911S. Any chance that your DFU would work with it or could you make a 8S DFU?
Last edit: 27 Nov 2018 22:42 by BirdBarber.

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27 Nov 2018 22:44 #71912 by goebish
Replied by goebish on topic protocol for WL Heli V911-s

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28 Nov 2018 01:22 #71914 by BirdBarber
Replied by BirdBarber on topic protocol for WL Heli V911-s
Great! Thanks a lot goebish.

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28 Nov 2018 02:43 - 28 Nov 2018 02:53 #71916 by BirdBarber
Replied by BirdBarber on topic protocol for WL Heli V911-s
I tested all of the flags and I found out that P2-1 is hover calibration and P1-5 is throttle hold.

I didn't find a 3G mode that is activated by changing a flag. I couldn't test combinations of flags because of how the test software is set up, but it's extremely unlikely that a multi flag combination is used so it looks like there is no 3G mode. That's a shame because that means new pilots may out grow the V911S in a matter of a week or two.

One of the flags could be for receiver side dual rates, but I didn't test for that and we don't need it anyway since it's much better to use standard transmitter side dual rates.

It looks like the main advantages to using a Deviation transmitter over the stock transmitter are the ability to lower the hyper tail yaw rate to something usable and having decent gimbals in the TX.
Last edit: 28 Nov 2018 02:53 by BirdBarber.

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07 Dec 2018 02:36 - 07 Dec 2018 03:43 #71997 by BirdBarber
Replied by BirdBarber on topic protocol for WL Heli V911-s
Success binding V911S with Devo 10 using a new 4-in-1 board!

I finally got my new 4-in-1. I replaced the 2016 4-in-1 in my Devo 10 that wouldn't bind with the V911S with a new one. It works great. It even binds more reliably than my Devo 8S with separate NRF24L01 module.

I made a post in the "3-in-1 / 4-in-1 RF Module" thread that shows how to identify the differences between the old and new models.
www.deviationtx.com/forum/7-development/...ule?start=1380#71996

Last edit: 07 Dec 2018 03:43 by BirdBarber.

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07 Dec 2018 02:44 #71998 by goebish
Replied by goebish on topic protocol for WL Heli V911-s
Cool!
But I'm still sure that's just a matter of luck ;)

It should be added to the nightly soon.

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