3.2 TFT problem

system · May 24, 2013, 4:10pm

Hello everyone

I'm probably one more in a series that has the same problem with 3.2 tft from ebay

I bought an identical TFT with eBay ... 3.2'' SSD1289.

http://www.ebay.com/itm/1PCS-3-2-TFT-LCD-Module-Display-Touch-Panel-PCB-adapter-/261096794843?pt=LH_DefaultDomain_0&hash=item3cca94eadb

I DID NOT bought a sheild, I tried to connect it , how I found on forum ; directly WIRES with Arduino Mega 2560 and I tried a couple of times, each time tft display is white and nothing happens.

Last time I connected only wire screen without touch and sd card .. as attached.

TFT -> Mega
LEDA -> 5V
VCC -> 5V
RD -> 3.3V
GND -> GND
DB0..DB7 -> pin D37->D30
DB8..DB15 -> pin D22->D29
RS -> D38
WR -> D39
CS(pin6) -> D40
RSET -> D41

..and nothing

Do I have to bou8ght a shield for this TFT?
I do not know where I am making a mistake? I have put UTFT library through the program and let more demo codes and notthing happens...
I could use a little help? Am I supposed to put a jumper somewhere? Or am making a mistake when connecting? Forgetting something???
If one is willing to explain the steps that I've already done, I may have something anticipated or I did. Power is supplied via USB if it's important.

While waiting for an answer I'm going to once again connect all over again
tnx

HazardsMind · May 24, 2013, 5:38pm

You should have received the adapter too. You should have the LCD module, touch panel, and PCB adapter. If you did not get the adapter, contact your seller.

system · May 24, 2013, 7:11pm

Maybe you misunderstood me, I bought the same as in the link. The adapter is part of the blue tiles below LCDs or I should get something separate? If you can picture how pcb adapter looks?

guix · May 24, 2013, 7:44pm

Hello and welcome

This is the adapter shield, that normally goes between your display and the Arduino:

So, your connections looks right, but CS is pin 15 not pin 6, and LEDA should be wired on 3.3V.

Maybe the problem is in your code, so post it

system · May 24, 2013, 8:52pm

that's right. connected as you wrote.

this is exactly what I got.

I have import UTFT library...
This is a program code (arduino examples code):

#include <UTFT.h>

// Declare which fonts we will be using
extern uint8_t SmallFont[];

// Uncomment the next line for Arduino 2009/Uno
//UTFT myGLCD(ITDB32S,19,18,17,16); // Remember to change the model parameter to suit your display module!

// Uncomment the next line for Arduino Mega
UTFT myGLCD(ITDB32S,38,39,40,41); // Remember to change the model parameter to suit your display module!

void setup()
{
randomSeed(analogRead(0));

// Setup the LCD
myGLCD.InitLCD();
myGLCD.setFont(SmallFont);
}

void loop()
{
int buf[318];
int x, x2;
int y, y2;
int r;

// Clear the screen and draw the frame
myGLCD.clrScr();

myGLCD.setColor(255, 0, 0);
myGLCD.fillRect(0, 0, 319, 13);
myGLCD.setColor(64, 64, 64);
myGLCD.fillRect(0, 226, 319, 239);
myGLCD.setColor(255, 255, 255);
myGLCD.setBackColor(255, 0, 0);
myGLCD.print("* Universal Color TFT Display Library *", CENTER, 1);
myGLCD.setBackColor(64, 64, 64);
myGLCD.setColor(255,255,0);
myGLCD.print("http://electronics.henningkarlsen.com", CENTER, 227);

myGLCD.setColor(0, 0, 255);
myGLCD.drawRect(0, 14, 319, 225);

// Draw crosshairs
myGLCD.setColor(0, 0, 255);
myGLCD.setBackColor(0, 0, 0);
myGLCD.drawLine(159, 15, 159, 224);
myGLCD.drawLine(1, 119, 318, 119);
for (int i=9; i<310; i+=10)
myGLCD.drawLine(i, 117, i, 121);
for (int i=19; i<220; i+=10)
myGLCD.drawLine(157, i, 161, i);

// Draw sin-, cos- and tan-lines
myGLCD.setColor(0,255,255);
myGLCD.print("Sin", 5, 15);
for (int i=1; i<318; i++)
{
myGLCD.drawPixel(i,119+(sin(((i*1.13)*3.14)/180)*95));
}

myGLCD.setColor(255,0,0);
myGLCD.print("Cos", 5, 27);
for (int i=1; i<318; i++)
{
myGLCD.drawPixel(i,119+(cos(((i*1.13)*3.14)/180)*95));
}

myGLCD.setColor(255,255,0);
myGLCD.print("Tan", 5, 39);
for (int i=1; i<318; i++)
{
myGLCD.drawPixel(i,119+(tan(((i*1.13)*3.14)/180)));
}

delay(2000);

myGLCD.setColor(0,0,0);
myGLCD.fillRect(1,15,318,224);
myGLCD.setColor(0, 0, 255);
myGLCD.setBackColor(0, 0, 0);
myGLCD.drawLine(159, 15, 159, 224);
myGLCD.drawLine(1, 119, 318, 119);

// Draw a moving sinewave
x=1;
for (int i=1; i<(31820); i++)
{
x++;
if (x==319)
x=1;
if (i>319)
{
if ((x==159)||(buf[x-1]==119))
myGLCD.setColor(0,0,255);
else
myGLCD.setColor(0,0,0);
myGLCD.drawPixel(x,buf[x-1]);
}
myGLCD.setColor(0,255,255);
y=119+(sin(((i1.1)3.14)/180)(90-(i / 100)));
myGLCD.drawPixel(x,y);
buf[x-1]=y;
}

delay(2000);