Devo f12e fpv stops working after deviation

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24 Jan 2017 19:41 #58351 by victzh
Replied by victzh on topic Devo f12e fpv stops working after deviation
So? Anyone tried recent nightly build?

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25 Jan 2017 02:15 #58362 by rdowzall
Replied by rdowzall on topic Devo f12e fpv stops working after deviation
Just loaded the (deviation-devof12e-v5.0.0-cd42b13.dfu) turned on a camera and held my breath..........it worked. No white screen, I can't begin to say how cool this is. Left it on for a good five minutes, clear as can be!!!! Haven't had a chance to try out in my quad but will tomorrow.

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29 Jan 2017 11:03 #58524 by Bonemyster
Replied by Bonemyster on topic Devo f12e fpv stops working after deviation
Yea I used the January 20th nightly and the fpv works perfectly. Thanks for the fix.

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29 Jan 2017 21:46 #58537 by Artus
Yes :) it works - hope i can in future handle files better for models and changes with Computer and F12E

Do you think that the color of the screen is "very blue" ? I compare the colors with another display

DEVO10 4in1 V5.0 DEVO F12E 4in1 V5
Align TREX 100 (3) Hubsan Q4
Walkera QRW100S Walkera QRX 350 Pro (FPV)
Walkera QRX 350 PREMIUM
DIY 100 mm Micro QUAD - HGLRCF4F5PRO with INAV

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03 Feb 2017 03:34 #58682 by Bonemyster
Replied by Bonemyster on topic Devo f12e fpv stops working after deviation
Dont really care about the color of the screen since when you fpv it dissapears but it would be nice if we could change the color.

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11 Feb 2017 19:30 #59078 by RubenRC
Replied by RubenRC on topic Devo f12e fpv stops working after deviation
I've got it working on my F12E although the screen turns off after a few minutes. I can't find in the menu where to change the setting to keep the monitor on. Do you guys know where I can find it?

Mavic Pro | ARFun 95 | KingKon Tiny7 | Beeductrix | Inductrix FPV | Nano QX2
DEVO F12E | Devo F7

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11 Feb 2017 21:28 #59081 by Artus
I am not at home - but there is a point in model menu or transmitter setup tomorrow I can write exactly where to find.

DEVO10 4in1 V5.0 DEVO F12E 4in1 V5
Align TREX 100 (3) Hubsan Q4
Walkera QRW100S Walkera QRX 350 Pro (FPV)
Walkera QRX 350 PREMIUM
DIY 100 mm Micro QUAD - HGLRCF4F5PRO with INAV

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11 Feb 2017 21:33 #59082 by rdowzall
Replied by rdowzall on topic Devo f12e fpv stops working after deviation
Are you sure you have the latest version.......this was happening to my screen until this new version, now this is the coolest transmitter I own!!!! So many thumbs up to the developers for their work!!!

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12 Feb 2017 00:52 #59084 by RubenRC
Replied by RubenRC on topic Devo f12e fpv stops working after deviation
Okay if your screen turns off here's the process to change the screen time out settings.

Press: ENT

Main menu

Go down to 2. >Transmitter Menu

Transmitter Menu

Go to 1.>Transmitter config

Configure

Go down to: Dimmer time [down to "Off"]

Press EXT

And that's it your screen will not turn off anymore.

Mavic Pro | ARFun 95 | KingKon Tiny7 | Beeductrix | Inductrix FPV | Nano QX2
DEVO F12E | Devo F7
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16 Feb 2017 19:13 #59204 by vlad_vy
Replied by vlad_vy on topic Devo f12e fpv stops working after deviation

vlad_vy wrote: My Devo F12E from today is on the way to me.


Now I have Devo F12E.

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17 Feb 2017 01:02 #59213 by RubenRC
Replied by RubenRC on topic Devo f12e fpv stops working after deviation
Hey do you all know if I can bind my f12e to a phantom 3? Or do I need to replace the receiver on the drone?

Mavic Pro | ARFun 95 | KingKon Tiny7 | Beeductrix | Inductrix FPV | Nano QX2
DEVO F12E | Devo F7

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17 Feb 2017 05:17 #59219 by vlad_vy
Replied by vlad_vy on topic Devo f12e fpv stops working after deviation
You need to change receiver. Phantom use Futaba FASST compatible receiver. Deviation has not support for Futaba FASST protocol.

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17 Feb 2017 05:21 #59220 by RubenRC
Replied by RubenRC on topic Devo f12e fpv stops working after deviation
Cool I thought so. Any recommendations for a receiver that will allow me to control the gimbal as well?

Mavic Pro | ARFun 95 | KingKon Tiny7 | Beeductrix | Inductrix FPV | Nano QX2
DEVO F12E | Devo F7

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17 Feb 2017 17:54 - 17 Feb 2017 18:13 #59236 by vlad_vy
Replied by vlad_vy on topic Devo f12e fpv stops working after deviation
By the way, my Devo F12E work with Deviation normally (both computer screen and video screen) with old nightly build settings only, what doesn't work for other users. So we need investigate that problem further.

Moreover, I've replaced original Flash memory chip UPCT25VF512A (512 Kbit) to SST25VF032B (32 Mbit), so now I have "Ultimate Devo F12E"(devof12e-4Mb). It's very simple (you need replace 8-pin chip) and promising mod and you will have: stable filesystem with easy access (USB drive), 4Mb of file space and it will open the opportunity to further development.

SST25VF032B chip is 2mm wider than UPCT25VF512A, so I need straighten pins (about 90 degree to chip body) in order to fit pins to PCB pads. It takes about a hour to implement the mod. I haven't image of modded Devo F12E board, but you can look on original Devo F12E board:



I've added to my custom v5.0.0 build "devof12e-4Mb" and "emu_devof12e-4Mb".
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Last edit: 17 Feb 2017 18:13 by vlad_vy.

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17 Feb 2017 18:36 #59238 by Artus
Vlad-vy After reading your post i opened my F12E - i want to know more :))

Do you think with a normal soldering knowledge its possible to desolder the old chip ?

You write the new chip is "wider" - so i have to move the "legs" under the chip body - or solder some pins to be able to fix this.

After soldering - and starting with the new chip - is there to do something special - cause i think the F12E is "empty" and not able to start ....

Is it possible to reinstall the original Walkera firmware ?

By the way - one question to the video signal - with the original F12E the picture is 16:9 and i can see all OSD information from my MWOSD.

The other F12E with deviation cuts the picture - so i have to replace the OSD - or do you think its possible to find the "switch" to 16:9

DEVO10 4in1 V5.0 DEVO F12E 4in1 V5
Align TREX 100 (3) Hubsan Q4
Walkera QRW100S Walkera QRX 350 Pro (FPV)
Walkera QRX 350 PREMIUM
DIY 100 mm Micro QUAD - HGLRCF4F5PRO with INAV

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17 Feb 2017 18:36 #59239 by RubenRC
Replied by RubenRC on topic Devo f12e fpv stops working after deviation
Now that's sweet. I'll look for the chip and order. Glad I ordered my helping hands lol. As for the video out I'll try mine when I get home. I haven't used that function yet. Hey do you have some guide for the .Ini I can use? I'm trying to setup a bee brain and I can't get my Aux switches to work. But I do have Aux 3 working.

Mavic Pro | ARFun 95 | KingKon Tiny7 | Beeductrix | Inductrix FPV | Nano QX2
DEVO F12E | Devo F7

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17 Feb 2017 18:47 - 19 Feb 2017 05:29 #59243 by vlad_vy
Replied by vlad_vy on topic Devo f12e fpv stops working after deviation
Artus, if I can to desolder original chip and solder new chip with my old eyes, it can be performed by any user. I use wide chisel (5mm) to desolder (slightly raise) one side of the chip and then do it for other side of the chip. With two iterations I can desolder chip completely.

I do not use any additional pins to solder new chip, I bent pins at right angle to chip surface and solder to PCB tabs.

Unfortunately you can't use original Walkera firmware after this mod.

With my build you have to install "DevoF12E-4Mb" firmware exactly same way as for Devo 10: flash firmware by DfuSe USB Upgrade, format USB drive and copy filesystem files.
Last edit: 19 Feb 2017 05:29 by vlad_vy.

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17 Feb 2017 19:18 #59246 by Artus
Thanks a lot for you answer vlady - i will try this mod - i have found an german supplier for (your used) this chip - i have the information that it's running out of live - the new one has 107 mhz dont know if the new one can be used instead.

Not possible to reinstall original software - so good to have 2 F12E :)

ruben - my second one F12E shows a 16:9 picture i can read all my OSD information - nothing is cut with the Walkera Firmware.

DEVO10 4in1 V5.0 DEVO F12E 4in1 V5
Align TREX 100 (3) Hubsan Q4
Walkera QRW100S Walkera QRX 350 Pro (FPV)
Walkera QRX 350 PREMIUM
DIY 100 mm Micro QUAD - HGLRCF4F5PRO with INAV

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17 Feb 2017 20:00 - 17 Feb 2017 20:01 #59248 by victzh
Replied by victzh on topic Devo f12e fpv stops working after deviation
I have similar build for my 4-in-1 module with flash on it - and I plan to unify versions with DevoFS and regular FAT so that it will autodetect the available SPI Flash and use either. It is possible on F12e and on Radiolink AT9 - they have enough flash ROM to fit all this code. Unfortunately it's impossible (though would make sense) for F4 and F7.

I'm very close to cleaning up the module design and sending it to the guy who makes 4-in-1 modules, it will take him some time to produce the actual modules.

WRT settings that work for you, Vlad. I suspect that you have different, newer hardware, which supports these auto-tune setting for video overlay chip better (that is why they use the settings in Walkera 1.6 firmware version). The question is how to programmatically detect what version you deal with.
Last edit: 17 Feb 2017 20:01 by victzh.

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18 Feb 2017 04:23 #59258 by M8A4X
@vlad_vy:

Your mod is very interesting, thank you for sharing it with us!
Please consider opening a new thread regarding this topic.

If I remember correctly, a whole while ago there was a thread about changing the flash rom chip of the devo F12E in order to get some functionality of deviation code running which is prevented by the standard flash rom size of it (that time I think it was about space for graphics or model images...). However I can't find it right now...

Best regards
Max

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