New WLToys Protocol V977

The range will be not so great but otherwise it looks like a correct module.

thanks. I can't wait for 20 days to receive an other.

Hi and hello.
Im new here and I have a problem.
I own a brand new Devo 10 white. Its untouchted.
After installing the nrf module everything seems to work.
I flashed the nightly, edited the hardware.ini (A13) copyed a modelfile from some one and started the tx.
I am able to set the KN mode but my tx wont bind with my v977.

Did I do something wrong? Maybe a mistake with the soldering?
I thougt if I did something wrong I wont be able to select KN in the menue.
I put the antenna cable on the walkera moduel, is this correct?

Problem solved.
I have forgotten to put the second antenna on the nrf module. Thanks to florida heli and his guide.

ig0rb wrote: Hi, I'm Igor from Italy, I taken a look to the very interesting work on deviation tx... and i'm trying to understand the KN protocol...

I wrote a simple sketch with arduino to log the V977 TX.
I read the protocol specs and the implemetation code of KN on bitbucket...

I have some troubles... I can see the binding packets , trasmitted from the TX, I identified the TX id, and channels that are used for frequency hopping, but when I try to open the first channel I cannot recognize correct data.

The ID of my TX is 0x00 0x02 0x00 0x1C 0x4b (??? is 4B static as i saw from the code)

Hello.

I am completely n00b here, so please bear with me.

I have question about this arduino code. I have TX from Eachine H8, and want to listen what it senduing. I tried your code, but got nothing. How do you know ID of your TX? Or, to clarify - is it possible to "hack" this ID from unknown TX? I tried inspect pins of the RF module, and got some manchester code, but seems that this is not exactly UART protocol - tried it on UART at 9600, but got 010101.... when no stick movement, and some other numbers when I move sticks. I have no other tools to decode it, but it is maybe possible to do it with arduino. There are many pulses, of which one looks like clock, but not continously - rather burst of pulses, then very short pause, then burst again...

I hope some help to get started.

Thank you in advance,
milan
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Hello. I don't know, how to search only in this topic so I am sorry if my question has been already answered. But is there any possibility to trim V966 heli independently in 3G and 6G mode like with original transmitter? If yes, how to do it?

Maybe I could offset output curve in mixing menu at one of the modes.

Hi Everyone,

I have seen this video and it seems to be possible to adjust angle on new v977 versions, but I think is only possible with the original transmitter. Has anyone tested with Devo and deviation? I tried with mine (Devo 8s, latest nightly build) but either I don't have the new V977 version or is not still implemented in deviation. Any information? Thanks!

Channel 9 should be mapped to the pitch trim channel in the current nightly KN protocol.

I have the v4.0.1-c3007aa, and there is just 8 channels. Is it possible to add a new one and try to map the pitch trim? I don't really know how...

The updated protocol with up to 11 channels, which also features pitch trim on channel 9, has been merged on July 24th, so you have to get a current nightly to use this features.

Fernando wrote: I have the v4.0.1-c3007aa, and there is just 8 channels. Is it possible to add a new one and try to map the pitch trim? I don't really know how...

Thank you Moeder. Latest build upgraded on my Devo. You were right that now I can go up to 11 channels and it works ,but there is something that I don't understand
I added just the ninth one and I see is linked to GEAR1 and EXPO&DR. If I do nothing when I move the throttle stick blades movement is very little, but If I enter into the EXPO&DR curve and go up to 103 (originally in 100) then blades open to the max and min. I cannot figure out how to configure that feature to let me give my desired angle. Up to now I where unable to do anything else. Any ideas? If you already have configured your model, may be you can upload to check your adjustments on my Devo8s (don't know if you have a Devo8s).

EDIT.
I found the solution here . After searching a bit more I found a new firmware here , just configure your model as the pictures.

Hi!, the original transmitter have a "hover debugging" button. Do you know if this feature is already implemented on our Devos? I haven't heard anything about it... Thanks!

Hi all,

Please help. I am a little confused about which rf module to use with v931, uses kn protocol same as v977 i believe.

I bought the following module a while back and it is said in this thread to be suitable.
www.banggood.com/2_4G-NRF24L01-PA-LNA-Wi...ntenna-p-922601.html


But having read the following i am not so sure.

"9.22. Protocol: *KN
The KN protocol is used on the WLToys V930, V966, V977 and V988 helicopters. It has not been tested with other models. NOTE: This protocol requires the addition of an ‘NRF24L01+’ hardware module to function. Note the “plus” version of the nRF device is required to support the 250kbits/s data rate."

Maybe this one is correct?
www.banggood.com/DEVO-Transmitter-Tuner-...ys-V922-p-89812.html

Any help appreciated. TIA

Bm

Hi,

Both modules are the same, but the first one is without antenna.
I bought and mounted the second one just for that reason, I needed an antenna.

If I am not wrong, KN protocol is the same in all Wltoys models, so you can use your Devo with that module and fly every helicopter you have. Actually I have a v977 and I am pretty sure that original transmitter are the same for both (v977 and v931) so in my opinion you can fly your heli without any problem. Anyway, next week I will test it because a friend of mine is going to lend me a v931 so I can give my impressions if you need it.

Good luck!

KN protocol is not for all WLToys models.
WLToys also use flysky protocol.

However the V931 does use the KN protocol like the V977.
The module you bought is the right one, but, like Fernando wrote, you need a antenna.

Thanks guys

Have antenna etc, just need to get avr.

Would be interested to hear your impressions Fernando, and which ini you use.

One more thing while i'm here, is it the latest nightly i need for kn protocol?

cheers
Bm

You do need a nightly, i would go for the latest.

I have both V931 and V977 and use this ini model to fly either one.
Devo 10
RUDD D/R: Throttle Hold On/Off
F.MOD 0: 6 Axis
F.MOD 1: 3 Axis
F.MOD 2: Idle up
AILE D/R: Dual Rate On/Off
MIX 0: Slow
MIX 1: Mid
MIX 2: Fast

Good luck and happy flying..

thanks

does anyone have or an direct me to an ini that works 100%

including thr hold

a 11ch setup with pitch trim would also be good

for 8s

tia

bm

mcheli.blogspot.com.au/2015/02/wltoys-v9...protocol-mod-v2.html

11ch ini @ above link

with pitch trim

bm