TFT320QVT + Mega LCD Shield 2.2 + Arduino Mega 2560 + UTFT librery

Other Hardware Displays
1

Hello everybody,

I have the next problem...

Problem description:
The TFT shows only a white and static screen with any example of the librery... I´m already change the parameters line with... "UTFT myGLCD(ILI9341_16, 38,39,40,41);" and "UTFT myGLCD(SSD1289, 38,39,40,41);"

Software description:
I am using visual code with PlatformIO extension, and the library UTFT modified for ILI9341_16, becuase my supplier told me that this was the correct one.

Hardware:
TFT320QVT 3.2" 40 pins; LCD, touch and SD port... the supplier told me that the controler was ILI9341 of 16 bits.
TFT LCD Mega Shield V2.2 of 40 pins... supplier told me that is for a direct conection for TFT to Mega2560
Arduino Mega 2550 R3 (Atmega 2560)

Could anyone give me some orientation for this problem?

Regards

2

Now I can confirm that the shield is working ok, the volts are the corrects, and following the HC541´s diagram I can confirm, that everything have continuity and the soldering is OK.

3

Yes, I always ask the the same thing.

Please post a link to the actual items that you have bought. e.g. Ebay sale page.

Normally you install libraries via the IDE Library Manager

However Mr Karlsen does not make UTFT available to the Manager (for some reason)
Please post a link to the actual UTFT that you have installed e.g. v2.83 from Rinky-Dink Electronics

I do not have your hardware. But I bet that other readers may have bought the same items as you from the same shop.

David.

4

Screen:

Shield:

Arduino Mega:
https://www.lionchipmexico.com/product-page/arduino-mega-r3-con-cable-usb

library link:

[color=#1f1f1f]http://www.electronicoscaldas.com/datasheet/UTFT_ILI9341.zip[/color]
5

david_prentice:
Normally you install libraries via the IDE Library Manager

However Mr Karlsen does not make UTFT available to the Manager (for some reason)
Please post a link to the actual UTFT that you have installed e.g. v2.83 from Rinky-Dink Electronics

I do not have your hardware. But I bet that other readers may have bought the same items as you from the same shop.

David.

I already create a new Project with the UTFT library from your source, selecting the arduino version, and select the example "UTFT_Demo_320x240" changing the parameters line with "UTFT myGLCD(SSD1289, 38, 39, 40, 41);" and UTFT myGLCD(ILI9341_16, 38, 39, 40, 41);
The results are the same... white and static screen...

6

278 Mexican Pesos seems about right for the Shield. $278 U.S. dollars sounds expensive.

Your screen, shield and Arduino all look like the regular items. Unfortunately none of the links show the pcb view but you assured us that it says TFT320QVT on the screen pcb.

I strongly advise you to install the genuine UTFT library i.e. from http://www.rinkydinkelectronics.com

Perhaps an owner can advise.

David.

7

jajaja yep, it is mexican pesos!

the pcb of the screen have the that identification "TFT320QVT", without the "9341".

Let me install that library and I will give you some feedback.

Thank you!

8

If it does not say 9341 use

UTFT myGLCD(SSD1289, 38,39,40,41)
9

david_prentice:
If it does not say 9341 use

UTFT myGLCD(SSD1289, 38,39,40,41)

I tried with this librery:
http://www.rinkydinkelectronics.com/library.php?id=51
And with this code:
UTFT myGLCD(SSD1289, 38,39,40,41)

in visual code + platformio and with Arduino IDE... same... white screen

10

God gave you the Arduino IDE.

I suggest that you always try that first. You know that this is tested by the whole world.

PlatformIO should be ok. But obviously it must be set up correctly.

"visual code" sounds very suspicious. Some "Visual" things are scams.

David.

11

It is not a bad tool, I use Visual Studio Code for ESP32, arduino, PICS, etc... and can be installed in windows, Linux and Mac...

but when something go wrong, I tried to verify the copile process and the upload to the board in the original IDE.

Any suggestion/ideas for my white screen? jeje

12

"Visual Studio" is a known brand name.

It is important to spell brand and product names accurately.

Wait for a day or two. I am sure that there are several readers with the same hardware as you.

David.

13

david_prentice:
"Visual Studio" is a known brand name.

It is important to spell brand and product names accurately.

Well... I used to name Visual Studio Code like Code or Visual Code... I think others mexicans too...

david_prentice:
Wait for a day or two. I am sure that there are several readers with the same hardware as you.

I hope so... thank for you support...

14

I decided to change my TFT model, now I am using TFT 3.5" shield for arduino and controller ILI9486... Now everything works perfect... Display, touch and SD... With UTFT, Mcu friend, Adafruit... Almost with everyone... And the best of this TFT is that works with 5v and not with 3.3...

If you have problems with you TFT320TQV, change to the version that have "+9341", or to another one like the 9486, In mi country is cheaper and work perfect...

15

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