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FQ777-951

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15 Sep 2016 12:31 - 15 Sep 2016 20:21 #53878 by goebish
FQ777-951 was created by goebish
I just got a FQ777-951C, it's using a XN297LBW and is not compatible with any existing protocol.
Captures from my TX only are not enough to fully understand the protocol, so more captures are welcome, please help ;)

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Thanks !
Last edit: 15 Sep 2016 20:21 by goebish.
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15 Sep 2016 14:08 #53884 by goebish
Replied by goebish on topic FQ777-951
Hmmm, looks like they've been using a trowel for the soldering job :P

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15 Sep 2016 19:28 - 15 Sep 2016 20:33 #53890 by goebish
Replied by goebish on topic FQ777-951
After a further look I found it's almost similar to the Hontai protocol actually, I only have to implement a sub format as channel range and flags seems different.
So, I don't need captures any more :)
Last edit: 15 Sep 2016 20:33 by goebish.
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16 Sep 2016 10:42 - 16 Sep 2016 10:42 #53907 by goebish
Replied by goebish on topic FQ777-951
Here are some test builds, select Hontai protocol and FQ777-951 format option.
www.dropbox.com/sh/p7mkz47nwpzvscq/AAB_8...paSUHuRgJmumoTa?dl=0

- channel 6: flip
- channel 7: snapshot (FQ777-951C)
- channel 8: video (FQ777-951C)
- channel 9: headless
Last edit: 16 Sep 2016 10:42 by goebish.
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14 Oct 2016 18:20 - 14 Oct 2016 18:21 #54922 by mike_j
Replied by mike_j on topic FQ777-951
Nice!

I just got one of these myself and it's almost unflyable with the really crazy springs on the supplied controller, so I was really happy to see that you'd already cracked the protocol.

I have a Devo 7e with the NRF24L01 module installed but I notice there are two Devo 7e zip files:

deviation-devo7e-v5.0.0-80e364e.zip
and
deviation-devo7e-256-v5.0.0-80e364e.zip

My 7e has no modifications other than two extra modules and two 3 position switches. Which one should I flash?
Last edit: 14 Oct 2016 18:21 by mike_j.
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15 Oct 2016 01:33 #54939 by kahuna001
Replied by kahuna001 on topic FQ777-951
The first one. The 256k version is for those that replaced the MCU. Hope that helps.
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15 Oct 2016 22:24 #54993 by mike_j
Replied by mike_j on topic FQ777-951
It does, many thanks.
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16 Oct 2016 00:10 #54994 by goebish
Replied by goebish on topic FQ777-951
The test build is not required anymore, the protocol is in nightly builds already.
www.deviationtx.com/downloads-new/category/13-nightly-builds
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16 Oct 2016 12:36 #55006 by mike_j
Replied by mike_j on topic FQ777-951
OK!

I was just about to sit down and flash this, so I'll take the latest nightly instead.

Thanks!
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16 Oct 2016 14:50 #55012 by mike_j
Replied by mike_j on topic FQ777-951
The actual model I have is the 951W.

I understand that I might not be able to trigger the camera and video, but should it still at least fly?

When I power up the quad and then turn on the Devo, the lights start to flash quickly and then turn on solid, so it seems to be binding to the Devo. It's just that even after an up-down on the throttle, nothing happens and the motors won't start.

Has anyone tried this with the WiFi version?
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16 Oct 2016 14:54 #55013 by goebish
Replied by goebish on topic FQ777-951
I have only tried with the 951C version, maybe the W version has something different.
Do you have a controller for it or is it a BNF version that requires that you connect it to a wifi device ?

If you've a stock 2.4 GHz RC controller for the W maybe you can help to find what's different from the 951C by providing some logic captures :)
www.deviationtx.com/forum/protocol-devel...95-spi-capture-guide
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17 Oct 2016 14:27 #55052 by mike_j
Replied by mike_j on topic FQ777-951
It does actually come with a controller and can be flown either with the controller, or via the mobile app. As I say, it showed the usual LED flashes to indicate binding when I turned the Devo on, so maybe both the controller and the attached WiFi device can both send commands to the flight controller. :unsure:

I'll crack the controller open and see what chippery is in it. I do have a logic analyser, so I'll capture some data as well.
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17 Oct 2016 14:30 #55053 by goebish
Replied by goebish on topic FQ777-951
I suppose it is a XN297LBW as well, maybe the protocol has a extra "arm" flag or something like that.
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19 Oct 2016 15:50 #55153 by mike_j
Replied by mike_j on topic FQ777-951
We'll see what the trace shows. I won't get time to do that for a while though as I've had a new frame arrive for a new build and that's going to keep me busy this weekend!

:woohoo:
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