2.8" TFT Touch Shield & TFT and TouchScreen libary

Products & Technology Shields
#1

Hey,

i have a new TFT Touch Shield v1 and an Arduino Uno V3. I pluged this two together and first i used the touchscreenexample. In the serial monitor i could see, that i touched the display. After this i tried the Text and the drawCircles examples, but none of them worked, i can only see the backlight. Where is my mistake? Hope you can help me.

Thanks!
Rik

#2

What sketch did you use? Let us know more about how you used it.

Regards,
Steve

#3

I use the 2.8" TFT Touch Shield [1] and the Arduino UNO [2]. I connected them by easily putting them together.
Then I compiled und uploaded:

// Draw Circles - Demonstrate drawCircle and fillCircle APIs

#include <stdint.h>
#include <TouchScreen.h>
#include <TFT.h>

#ifdef SEEEDUINO
  #define YP A2   // must be an analog pin, use "An" notation!
  #define XM A1   // must be an analog pin, use "An" notation!
  #define YM 14   // can be a digital pin, this is A0
  #define XP 17   // can be a digital pin, this is A3 
#endif

#ifdef MEGA
  #define YP A2   // must be an analog pin, use "An" notation!
  #define XM A1   // must be an analog pin, use "An" notation!
  #define YM 54   // can be a digital pin, this is A0
  #define XP 57   // can be a digital pin, this is A3 
#endif 

void setup()
{

Tft.init();  //init TFT library

/*  Demo of 
    void drawCircle(int poX, int poY, int r,unsigned int color) and
    void fillCircle(int poX, int poY, int r,unsigned int color);
*/
Tft.drawCircle(100, 100, 30,YELLOW);
Tft.drawCircle(100, 200, 40,CYAN);
Tft.fillCircle(200, 100, 30,RED);
Tft.fillCircle(200, 200, 30,BLUE);
}

void loop()
{
  
}

after uploading the screen is white (so the backlight is working) but there is nothing more.

I hope I answered your question with this.

[1] seeedstudio.com/wiki/2.8%27% … uch_Shield
[2] seeedstudio.com/wiki/Arduino_UNO

#4

The Sketch on the Wiki page does not work, use the examples included with the libraries.