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Adafruit 1.44" Color TFT not working NEWBIE help needed
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Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Tue Aug 18, 2020 12:15 pm

Hello,

I am a newbie to Arduino and TFT screens. I have recently completed the official Arduino Projects Book and have been able to follow the directions and successfully complete all the projects. I understand the basics of Arduino code, installing libraries etc. I want to build a basic electronics project that includes a small TFT screen so I purchased the Adafruit 1.44" Color TFT (https://learn.adafruit.com/adafruit-1-44-color-tft-with-micro-sd-socket). I assumed that if I followed the clear instructions for assembly, copied what I saw in their photos for the wiring and used one of the provided code examples, I could get it to work and experiment with it to learn more.

Despite my best efforts, I have been unable to make the screen work. Perhaps I have missed something in the wiring? I have installed the required libraries and made the small changes to the example code that were part of the instructions and still no joy. Eventually, all I want to do is display one image on the screen in my project, I didn't imagine it would be this hard to get started. I'm not trying to use the SD card at this point, just trying to get the screen working following these instructions: https://learn.adafruit.com/adafruit-1-44-color-tft-with-micro-sd-socket/wiring-and-test and the following code example. I hope I have posted everything correctly, any help would be greatly appreciated!

Code: Select all | TOGGLE FULL SIZE
/**************************************************************************
  This is a library for several Adafruit displays based on ST77* drivers.

  Works with the Adafruit 1.8" TFT Breakout w/SD card
    ----> http://www.adafruit.com/products/358
  The 1.8" TFT shield
    ----> https://www.adafruit.com/product/802
  The 1.44" TFT breakout
    ----> https://www.adafruit.com/product/2088
  The 1.14" TFT breakout
  ----> https://www.adafruit.com/product/4383
  The 1.3" TFT breakout
  ----> https://www.adafruit.com/product/4313
  The 1.54" TFT breakout
    ----> https://www.adafruit.com/product/3787
  The 2.0" TFT breakout
    ----> https://www.adafruit.com/product/4311
  as well as Adafruit raw 1.8" TFT display
    ----> http://www.adafruit.com/products/618

  Check out the links above for our tutorials and wiring diagrams.
  These displays use SPI to communicate, 4 or 5 pins are required to
  interface (RST is optional).

  Adafruit invests time and resources providing this open source code,
  please support Adafruit and open-source hardware by purchasing
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.
  MIT license, all text above must be included in any redistribution
 **************************************************************************/

#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>

#if defined(ARDUINO_FEATHER_ESP32) // Feather Huzzah32
  #define TFT_CS         14
  #define TFT_RST        15
  #define TFT_DC         32

#elif defined(ESP8266)
  #define TFT_CS         4
  #define TFT_RST        16                                           
  #define TFT_DC         5

#else
  // For the breakout board, you can use any 2 or 3 pins.
  // These pins will also work for the 1.8" TFT shield.
  #define TFT_CS        10
  #define TFT_RST        9 // Or set to -1 and connect to Arduino RESET pin
  #define TFT_DC         8
#endif

// OPTION 1 (recommended) is to use the HARDWARE SPI pins, which are unique
// to each board and not reassignable. For Arduino Uno: MOSI = pin 11 and
// SCLK = pin 13. This is the fastest mode of operation and is required if
// using the breakout board's microSD card.

// For 1.44" and 1.8" TFT with ST7735 use:
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

// For 1.14", 1.3", 1.54", and 2.0" TFT with ST7789:
//Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);


// OPTION 2 lets you interface the display using ANY TWO or THREE PINS,
// tradeoff being that performance is not as fast as hardware SPI above.
//#define TFT_MOSI 11  // Data out
//#define TFT_SCLK 13  // Clock out

// For ST7735-based displays, we will use this call
//Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);

// OR for the ST7789-based displays, we will use this call
//Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);


float p = 3.1415926;

void setup(void) {
  Serial.begin(9600);
  Serial.print(F("Hello! ST77xx TFT Test"));

  // Use this initializer if using a 1.8" TFT screen:
  //tft.initR(INITR_BLACKTAB);      // Init ST7735S chip, black tab

  // OR use this initializer if using a 1.8" TFT screen with offset such as WaveShare:
  // tft.initR(INITR_GREENTAB);      // Init ST7735S chip, green tab

  // Use this initializer (uncomment) if you're using a 1.44" TFT
  tft.initR(INITR_144GREENTAB);   // initialize a ST7735S chip, black tab

  // OR use this initializer (uncomment) if using a 1.44" TFT:
  //tft.initR(INITR_144GREENTAB); // Init ST7735R chip, green tab

  // OR use this initializer (uncomment) if using a 0.96" 160x80 TFT:
  //tft.initR(INITR_MINI160x80);  // Init ST7735S mini display

  // OR use this initializer (uncomment) if using a 1.3" or 1.54" 240x240 TFT:
  //tft.init(240, 240);           // Init ST7789 240x240

  // OR use this initializer (uncomment) if using a 2.0" 320x240 TFT:
  //tft.init(240, 320);           // Init ST7789 320x240

  // OR use this initializer (uncomment) if using a 1.14" 240x135 TFT:
  //tft.init(135, 240);           // Init ST7789 240x135
 
  // SPI speed defaults to SPI_DEFAULT_FREQ defined in the library, you can override it here
  // Note that speed allowable depends on chip and quality of wiring, if you go too fast, you
  // may end up with a black screen some times, or all the time.
  //tft.setSPISpeed(40000000);

  Serial.println(F("Initialized"));

  uint16_t time = millis();
  tft.fillScreen(ST77XX_BLACK);
  time = millis() - time;

  Serial.println(time, DEC);
  delay(500);

  // large block of text
  tft.fillScreen(ST77XX_BLACK);
  testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", ST77XX_WHITE);
  delay(1000);

  // tft print function!
  tftPrintTest();
  delay(4000);

  // a single pixel
  tft.drawPixel(tft.width()/2, tft.height()/2, ST77XX_GREEN);
  delay(500);

  // line draw test
  testlines(ST77XX_YELLOW);
  delay(500);

  // optimized lines
  testfastlines(ST77XX_RED, ST77XX_BLUE);
  delay(500);

  testdrawrects(ST77XX_GREEN);
  delay(500);

  testfillrects(ST77XX_YELLOW, ST77XX_MAGENTA);
  delay(500);

  tft.fillScreen(ST77XX_BLACK);
  testfillcircles(10, ST77XX_BLUE);
  testdrawcircles(10, ST77XX_WHITE);
  delay(500);

  testroundrects();
  delay(500);

  testtriangles();
  delay(500);

  mediabuttons();
  delay(500);

  Serial.println("done");
  delay(1000);
}

void loop() {
  tft.invertDisplay(true);
  delay(500);
  tft.invertDisplay(false);
  delay(500);
}

void testlines(uint16_t color) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(0, 0, x, tft.height()-1, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(0, 0, tft.width()-1, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(tft.width()-1, 0, x, tft.height()-1, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(tft.width()-1, 0, 0, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(0, tft.height()-1, x, 0, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(0, tft.height()-1, tft.width()-1, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(tft.width()-1, tft.height()-1, x, 0, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(tft.width()-1, tft.height()-1, 0, y, color);
    delay(0);
  }
}

void testdrawtext(char *text, uint16_t color) {
  tft.setCursor(0, 0);
  tft.setTextColor(color);
  tft.setTextWrap(true);
  tft.print(text);
}

void testfastlines(uint16_t color1, uint16_t color2) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t y=0; y < tft.height(); y+=5) {
    tft.drawFastHLine(0, y, tft.width(), color1);
  }
  for (int16_t x=0; x < tft.width(); x+=5) {
    tft.drawFastVLine(x, 0, tft.height(), color2);
  }
}

void testdrawrects(uint16_t color) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color);
  }
}

void testfillrects(uint16_t color1, uint16_t color2) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=tft.width()-1; x > 6; x-=6) {
    tft.fillRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color1);
    tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color2);
  }
}

void testfillcircles(uint8_t radius, uint16_t color) {
  for (int16_t x=radius; x < tft.width(); x+=radius*2) {
    for (int16_t y=radius; y < tft.height(); y+=radius*2) {
      tft.fillCircle(x, y, radius, color);
    }
  }
}

void testdrawcircles(uint8_t radius, uint16_t color) {
  for (int16_t x=0; x < tft.width()+radius; x+=radius*2) {
    for (int16_t y=0; y < tft.height()+radius; y+=radius*2) {
      tft.drawCircle(x, y, radius, color);
    }
  }
}

void testtriangles() {
  tft.fillScreen(ST77XX_BLACK);
  uint16_t color = 0xF800;
  int t;
  int w = tft.width()/2;
  int x = tft.height()-1;
  int y = 0;
  int z = tft.width();
  for(t = 0 ; t <= 15; t++) {
    tft.drawTriangle(w, y, y, x, z, x, color);
    x-=4;
    y+=4;
    z-=4;
    color+=100;
  }
}

void testroundrects() {
  tft.fillScreen(ST77XX_BLACK);
  uint16_t color = 100;
  int i;
  int t;
  for(t = 0 ; t <= 4; t+=1) {
    int x = 0;
    int y = 0;
    int w = tft.width()-2;
    int h = tft.height()-2;
    for(i = 0 ; i <= 16; i+=1) {
      tft.drawRoundRect(x, y, w, h, 5, color);
      x+=2;
      y+=3;
      w-=4;
      h-=6;
      color+=1100;
    }
    color+=100;
  }
}

void tftPrintTest() {
  tft.setTextWrap(false);
  tft.fillScreen(ST77XX_BLACK);
  tft.setCursor(0, 30);
  tft.setTextColor(ST77XX_RED);
  tft.setTextSize(1);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_YELLOW);
  tft.setTextSize(2);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_GREEN);
  tft.setTextSize(3);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_BLUE);
  tft.setTextSize(4);
  tft.print(1234.567);
  delay(1500);
  tft.setCursor(0, 0);
  tft.fillScreen(ST77XX_BLACK);
  tft.setTextColor(ST77XX_WHITE);
  tft.setTextSize(0);
  tft.println("Hello World!");
  tft.setTextSize(1);
  tft.setTextColor(ST77XX_GREEN);
  tft.print(p, 6);
  tft.println(" Want pi?");
  tft.println(" ");
  tft.print(8675309, HEX); // print 8,675,309 out in HEX!
  tft.println(" Print HEX!");
  tft.println(" ");
  tft.setTextColor(ST77XX_WHITE);
  tft.println("Sketch has been");
  tft.println("running for: ");
  tft.setTextColor(ST77XX_MAGENTA);
  tft.print(millis() / 1000);
  tft.setTextColor(ST77XX_WHITE);
  tft.print(" seconds.");
}

void mediabuttons() {
  // play
  tft.fillScreen(ST77XX_BLACK);
  tft.fillRoundRect(25, 10, 78, 60, 8, ST77XX_WHITE);
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_RED);
  delay(500);
  // pause
  tft.fillRoundRect(25, 90, 78, 60, 8, ST77XX_WHITE);
  tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_GREEN);
  tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_GREEN);
  delay(500);
  // play color
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_BLUE);
  delay(50);
  // pause color
  tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_RED);
  tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_RED);
  // play color
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_GREEN);
}


setup.jpg
Here is my setup
setup.jpg (568.89 KiB) Viewed 84 times
Attachments
serial.jpg
This is what the Serial Monitor is showing me
serial.jpg (285.5 KiB) Viewed 84 times
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by dastels on Tue Aug 18, 2020 5:34 pm

Your wiring looks fine. Have you tested the connections? The soldering on the display header looks good. When I have hardware not work unexpectedly, the first thing I do is verify all connections and solder joints. Does the display backlight come on? Is the display board getting power?

You Arduino settings should be fine since it's copying over and running and you get Serial output. Verify that all libraries are up to date.

Dave

dastels
 
Posts: 3885
Joined: Tue Oct 20, 2015 3:22 pm

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Tue Aug 18, 2020 6:47 pm

Hi Dave,

Thank you very much for taking the time to reply, I really appreciate it.

The backlight is not coming on. That should come on at least even if nothing is drawn on the screen?

I tested all my soldered connections with my meter, all are good. I just used this Uno for all the projects in the project book so I am assuming all the pins are still working. I tested the power going to the breadboard and it is working.

I went and double checked that all the libraries are installed and updated.

The instructions in the tutorial suggested trying the reset button on the Arduino, I tried it, nothing happened.
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Wed Aug 19, 2020 11:53 am

If all solder/wiring is correct and confirmed with a meter and I have confirmed that power is going to the screen, should the backlight be coming on regardless of whatever example code I am using or are the proper libraries and code needed to even light it up at all?

I am trying to determine whether my Adafruit 1.44" screen could be defective. I have another similar non-Adafruit screen that I have made work.

Thanks
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by dastels on Wed Aug 19, 2020 1:58 pm

Yes, the backlight should be on. If it's not you might have trouble telling if anything is being drawn.

The Lite pin should be high (close to 5v). If it's not, connect it to 5v. If that doesn't turn the light on, there's a real problem.

Dave

dastels
 
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Joined: Tue Oct 20, 2015 3:22 pm

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Wed Aug 19, 2020 2:11 pm

With my meter, Vin is at 4.98 Lite is at 3.29.

Are you saying I should connect the Lite pin directly to power? 3.3V or 5V?

Thanks :)
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by dastels on Wed Aug 19, 2020 3:00 pm

Hmm. Try connecting it to Vin.

Dave

dastels
 
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Joined: Tue Oct 20, 2015 3:22 pm

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Wed Aug 19, 2020 3:09 pm

Sorry, I'm not sure I understand what you want me to do and I want to confirm so I don't make a mistake and damage the screen.
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by dastels on Wed Aug 19, 2020 3:51 pm

Connect the Lite pin to the Vin pin (on the breadboard).

If that doesn't turn the backlight on, there's a problem with the board.

Dave

dastels
 
Posts: 3885
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Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Wed Aug 19, 2020 4:45 pm

Hi Dave,

Thank you for your help, you've been very patient. I did as you suggested and the back light did not come on. No sign of life.

Cheers
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by dastels on Wed Aug 19, 2020 4:49 pm

OK. Please email support@adafruit.com with a link to this thread, your order number, and request the replacement of one Adafruit 1.44" Color TFT with Micro SD Socket.

Dave

dastels
 
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Joined: Tue Oct 20, 2015 3:22 pm

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Wed Aug 19, 2020 5:02 pm

New development. I was checking all the connections again and I turned on a very bright lamp. The angle of the lamp was such that I could see just barely that the screen is cycling through the graphics. So apparently the board is not dead and the code is functioning but there is no backlight to allow me to see anything.

I thought these boards had the backlight on as the default?

Cheers
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by dastels on Wed Aug 19, 2020 6:32 pm

Yes, the backlight should always be on by default. You can control its brightness by applying a PWM (or digital for on/off) signal to the Lite pin.

Without a functioning backlight it's pretty useless. It's doing what I figured (i.e. it is working... you just can't see it because the backlight isn't working).

Dave

dastels
 
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Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Wed Aug 19, 2020 6:47 pm

Sorry, please excuse my inexperience but would there be any use in trying to turn up the brightness using code just to see whether there would be any effect? If for some reason the defect is that it is just turned way down?
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Re: Adafruit 1.44" Color TFT not working NEWBIE help needed

by arduinokov on Wed Aug 19, 2020 6:48 pm

That's my last comment/question.
arduinokov
 
Posts: 20
Joined: Mon Oct 10, 2011 9:16 am

Please be positive and constructive with your questions and comments.