Display showing only white screen. Unknown controller 2.2 inch LCD display

[jaykapse]

I'm very new to Arduino and this is my first time working with a LCD display. This is the display i bought.

I'm having trouble finding any documentation regarding it, and it will only show me a white screen. How do I proceed and use this display? I'm very lost and worried I won't be able to use this display.

I tried connecting it this way as per chatGPT's suggestion:

Column 1	Column 2
VCC	VCC (3.3V)
GND	GND
GND	Not Connected
NC	Not Connected
NC	Not Connected
LED	VCC (3.3V)
CLK	SCK (SPI Clock, Pin 9)
SDI	MOSI (SPI Data, Pin 8)
RS	4
RST	3
CS	5

I'm using an arduino MKR wifi 1010. Tried running this sample code:

#include <Adafruit_GFX.h>
#include <Adafruit_ST7735.h>
#include <SPI.h>

// Define the pins you're using
#define TFT_CS     5
#define TFT_RST    3
#define TFT_DC     4

// Initialize the display
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  // Initialize serial communication for debugging
  Serial.begin(9600);
  
  // Initialize the display
  tft.initR(INITR_BLACKTAB); // You might need to change this depending on your LCD controller
  tft.fillScreen(ST77XX_BLACK);
  tft.setTextColor(ST77XX_WHITE);
  tft.setTextSize(1);
  tft.setCursor(0, 0);
  tft.println("Hello, world!");

  // Print to Serial Monitor for debugging
  Serial.println("LCD initialized");
}

void loop() {
  // You can add code here to update the display
}

Please dont hesitate to ask for additional information. Thank you in advance!

[gilshultz]

@jaykapse

this is my first time working with a LCD display

I recommend you get a simple LCD display and learn how they work. Trying to do it without any experience and none of the data is very difficult but you could get lucky.

[sumguy]

@jaykapse In the picture there is no connection on RST, your probably going to need that when you initialize the display

[jaykapse]

What LCD module would you recommend for a beginner like me? I made the mistake of assuming all of them would be similar because i didn't have any idea about these.

[jaykapse]

I actually connected all the wires other than one GND and the NC pins. My reset was connected to 3, i just took the picture before the connections were made.

Am I missing something with respect to the pins on the Arduino MKR? I just trusted ChatGPT's suggestions, but maybe the MKR pins corresponding to the display do not support it.

[sumguy]

@jaykapse the only thing I can suggest is initializing the display driver like this

#define TFT_CS     5
#define TFT_RST    3
#define TFT_DC     4
#define TFT_CLK	   9
#define TFT_SDI    8


// Initialize the display
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_SDI,  TFT_CLK, TFT_RST);

[gilshultz]

@jaykapse

What LCD module would you recommend for a beginner like me?

Check this link , there are many sources for this display. Get it with the backpack (I2C adapter) soldered to it if you do not have the soldering skills. This link should get you several possible sources. https://www.youtube.com/watch?v=xVC0X_PE_XE