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Jumper t8sg blank screen

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10 Jan 2018 17:52 - 11 Jan 2018 14:16 #66814 by vlad_vy
Replied by vlad_vy on topic Jumper t8sg blank screen
Can you try the build with 6 times bigger contrast range? And report result.

File deleted...
Last edit: 11 Jan 2018 14:16 by vlad_vy.
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10 Jan 2018 18:29 #66815 by Moeder
Replied by Moeder on topic Jumper t8sg blank screen
I reread the thread and wonder why this appeared only after flashing the firmware. Vlad, how does the screen on your jumper behave in firmware update mode? Same "almost black" screen? This would probably rule out hardware issues from the firmware update. On the other hand I think jumper would have informed us if they had display issues requiring to deliver their TX with a modified lcd.c
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10 Jan 2018 18:55 #66816 by FDR
Replied by FDR on topic Jumper t8sg blank screen
I'm not that certain about that... ;)
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10 Jan 2018 19:02 #66817 by berserker_aerial
Replied by berserker_aerial on topic Jumper t8sg blank screen
Will do that when I get home from work thank you to those helping
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10 Jan 2018 19:07 - 11 Jan 2018 14:17 #66818 by vlad_vy
Replied by vlad_vy on topic Jumper t8sg blank screen
One more build with corrected LCD_init(). Will be nice if it will fix the problem.

File deleted...
Last edit: 11 Jan 2018 14:17 by vlad_vy.
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10 Jan 2018 21:07 #66821 by Burns2000
Replied by Burns2000 on topic Jumper t8sg blank screen
Thank you, the build with 6 times more contrast works Perfect!
But my Problem with binding the Flysky Receiver with AFHDS-2A is still there. Can anybody Help with the right Settings?
Thank you!
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10 Jan 2018 21:25 #66822 by FDR
Replied by FDR on topic Jumper t8sg blank screen
Is it really a new LCD module then?
If we can't detect it, one solution might be to put the contrast range into the hardware.ini file...
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10 Jan 2018 22:56 - 10 Jan 2018 22:57 #66826 by berserker_aerial
Replied by berserker_aerial on topic Jumper t8sg blank screen
Ok I can not thank you all enough
The transmitter is functioning now Will setup and get back with the group

Thanks AGAIN
Attachments:
Last edit: 10 Jan 2018 22:57 by berserker_aerial. Reason: Spelling
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10 Jan 2018 23:17 #66828 by berserker_aerial
Replied by berserker_aerial on topic Jumper t8sg blank screen
The file you sent me ..
Is that the new nightly build or should I leave it alone
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11 Jan 2018 03:38 - 11 Jan 2018 03:43 #66833 by vlad_vy
Replied by vlad_vy on topic Jumper t8sg blank screen
Can you try second build with corrected LCD_init()? Will be better for all users if it will work for you.

Both builds based on Nightly Builds.

Burns2000, try to use AFHDS-2A protocol option "Freq Tune" with step 10-20, after successful bind change it to both sides up to lost bind and calculate sweet middle.
Last edit: 11 Jan 2018 03:43 by vlad_vy.
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11 Jan 2018 04:23 - 11 Jan 2018 04:23 #66835 by berserker_aerial
Replied by berserker_aerial on topic Jumper t8sg blank screen
OK did both builds you listed
1 first build got it back on (lcd showed what I needed )
2 the second build was even better detail on screen ( Icons looked sharper and crisp )
Last edit: 11 Jan 2018 04:23 by berserker_aerial.
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11 Jan 2018 04:40 #66836 by vlad_vy
Replied by vlad_vy on topic Jumper t8sg blank screen
Nice!!! So we can fix problem for all users.

I don't know why, but most T8SG LCD controllers has different, not default, value for "Internal Resistor Rate (Rb/Ra)" register, default value is 0x24, but my T8SG work as it should be only with value 0x26. So it has default value 0x26.

It looks like your T8SG LCD controller has default value 0x24.
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11 Jan 2018 06:16 #66841 by vlad_vy
Replied by vlad_vy on topic Jumper t8sg blank screen
berserker_aerial,

I see your battery voltage is very low, with any voltage lower than 7.4V you can get in troubles. What battery do you use?
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11 Jan 2018 09:27 #66844 by dc59
Replied by dc59 on topic Jumper t8sg blank screen

Burns2000 wrote: Thank you, the build with 6 times more contrast works Perfect!
But my Problem with binding the Flysky Receiver with AFHDS-2A is still there. Can anybody Help with the right Settings?
Thank you!


Hi Burns2000,

Would you please check your T8SG battery door , is there a "+90" sticker on it?
It looks like this picture:



Thank you!

Hi vlad_vy, I sent you a PM.
Attachments:
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11 Jan 2018 09:35 - 11 Jan 2018 09:41 #66845 by FDR
Replied by FDR on topic Jumper t8sg blank screen
Can you share that in our Jumper forum?
Last edit: 11 Jan 2018 09:41 by FDR.
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11 Jan 2018 09:44 #66847 by dc59
Replied by dc59 on topic Jumper t8sg blank screen

FDR wrote: Can you share that in our Jumper forum?


Done! :)
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11 Jan 2018 10:31 #66854 by Burns2000
Replied by Burns2000 on topic Jumper t8sg blank screen
Hi,
Yes on Battery door is a +90 sticker
But I can`t bind my transmitter to any Flysky Receiver. With my Flysky Radio all Receivers works perfect.
I think I got a "Monday" Model.
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11 Jan 2018 12:49 - 11 Jan 2018 12:50 #66858 by vlad_vy
Replied by vlad_vy on topic Jumper t8sg blank screen
"Freq Tune" doesn't help?

Burns2000, try to use AFHDS-2A protocol option "Freq Tune" with step 10-20, after successful bind change it to both sides up to lost bind and calculate sweet middle.

Last edit: 11 Jan 2018 12:50 by vlad_vy.
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11 Jan 2018 17:42 #66866 by Burns2000
Replied by Burns2000 on topic Jumper t8sg blank screen
I tried to bind DSMX with a Blade Nano CP X that works without Freq Tune. Normal is 0 at Freq Tune. But with my Flysky no chance.
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11 Jan 2018 18:09 #66867 by Moeder
Replied by Moeder on topic Jumper t8sg blank screen
Dsmx uses a different module and doesn't need fine tune, there isn't even a protocol option for it. Select afhds-2a, press ENT and try binding with different values in the freq tune setting (starting maybe with values +-20)
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