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MiniEngine 2 White Screen Problem
#1
Video 
Hi, On miniengine 2 LCD seems as white-screen. I am always pressing on the LCD Panel first 8bit  pin after 16bit change solve this problem. Or always pressing on the reset button to solve this problem
This is the only way i can solve it out. I tried all the drivers. 
Quote:

ILI9325D driver works What might be the reason of this problem?

My Component;

1.ITeaduino Arduino DUE Microcontroller Board SAM3X8E ARM Crotex-M3 Core 

Mainboard
https://www.itead.cc/iteaduino-due.html

2.ITDB02 2.4" TFT LCD Display Screen Module Shield For Arduino Starters
https://www.itead.cc/itdb02-2-4e.html  V1
(LCD module is ILI9325D)


1.
  • 8 Bit Change 
  • Close Battery
  • After 16Bit 
  • Then Open MiniEngine 
Video ;
https://youtu.be/zAYVsNRRKyI

2.always pressing on the reset button to solve this problem

https://youtu.be/8jyYMnGIN-g
Reply
#2
To solve the white screen problem at turn on, I had soldered electrolytic capacitor between reset button pins on DUE board. The problem is on DUE, it is some initialization problem at power-up. The cap was 10uF.
It works for me,... still happens time to time but it is much better.

The board is not the same as mine, but maybe the problem stays the same.

http://www.ebay.com/itm/Para-Arduino-Due-R3-SAM3X8E-32-bit-ARM-Cortex-M-Control-Board-Module-Cable-TE223-/311539944912?hash=item48893a4dd0:g:fmsAAOSwUuFWvnSc
its not the same seller, but I think the DUE is.

Wish you luck, hope I had help you.
Have a nice day
Simon
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#3
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(05-10-2016, 12:02 AM)symon Wrote: To solve the white screen problem at turn on, I had soldered electrolytic capacitor between reset button pins on DUE board. 

Hej Simon,
thanks for the feedback! This sounds like a reasonable explanation for the problem - a brownout during boot-up. Can you show some pictures of how you soldered in the capacitor and also tell us which capacitor you used?

Thanks!
Airic  
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#4
Hey, Airic,.. sure no problem=)

Yes I forgot something. There is also resistor in series with capacitor to prevent over current through IO pin.
I have used electrolytic capacitor 10uF/63V but the voltage is much to high, 16V would be just fine.
The resistor is 470ohm.

There are some pictures....

[Image: 23124953.jpg]

[Image: 23124952.jpg]

And here is the forum from Arduino. It starts on page 2 I think, how to fix it.

https://forum.arduino.cc/index.php?topic=256771.15

Have a nice day, and I hope it works for you guys!
Simon
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#5
Great - Thanks!
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