[solved] I can not get my 3.2'' LCD work with my Due

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1

Hi,

I can not get my 3.2'' LCD work with my Due.

The LCD I bought from ebay is http://www.ebay.com/itm/3-2-inch-TFT-LCD-module-Display-with-touch-panel-SD-card-240x320-than-128x64-lcd-/200908823757?pt=LH_DefaultDomain_0&hash=item2ec7195ccd

However, what I really got is looks more like this SainSmart 3.2"tft LCD Display Touch Panel PCB Adapter SD Slot 4 Arduino Mega2560 for sale online | eBay
(except there is no URL for SainSmart on the back side of the LCD, but there is text "TFT_320QVT" on the back side)

And by following the document of UTFT library, I connect my LCD with my Due by wires directly. (The document does not mention about LED_A, but I connect it to 3V3)

I also changed the example code according my configuration (In fact I tried all models supported by the library)

The only thing I got is the white screen.

Does that mean I got a defective LCD? Or there is something wrong with what I did?

Btw, it seems the touch module works. I just modified the code to make the LED on pin 13 blink when the myTouch.dataAvailable() == 1. And it does when I touch the screen by my finger.

Thank you for your help.

2

I got no answer here.

Anyway, I figured it out by myself.

3

Hi,

I'm having a similar problem with my Arduino DUE and LCD screen. I have the same screen as the one you posted. Like you I hooked it up according to the UTFT example code but the only thing that works is the LED backlight. If you know what you did to get it to work could you please post.

Thanks

4

So how did you fix it?

5

Do you have the RD lead connected to 3.3v ? It needs to be kept high for the LCDs I use (incl. the one from SainSmart)