LCD screen = TV static, see post 24-evolving problem

vbee155 · February 17, 2024, 7:29pm

Hi! PLEASE ANY SUGGESTIONS I am trying to make a small video appear on a 2inch LCD screen and I need some help fixing it.

This is my set up:
pins as follows:
VCC -> 5V
GND -> GND
(MOSI) DIN -> D7
(MISO) CLK -> D6
CS -> D8
DC -> D3
RST -> D4
BL -> NOT CONNECTED

this is my lcd screen:
Amazon.com: waveshare General 2inch IPS LCD Display Module 240×320 Resolution 2.0inch Monitor Embedded Controller RGB, 262K Color Display Color LED Backlight ST7789 Driver SPI Interface : Electronics

and this is my code:

#include <TFT_eSPI.h> // Install this library via Arduino Library Manager

// Define pins
#define TFT_CS    D8
#define TFT_DC    D3
#define TFT_RST   D4

TFT_eSPI tft = TFT_eSPI(); // Create TFT object

void setup() {
  tft.init(); // Initialize TFT display
  tft.setRotation(1); // Set display rotation (0, 1, 2, or 3)

  // Fill screen with a color (optional)
  tft.fillScreen(TFT_BLACK);

  // Display the file path
  tft.setTextSize(2);
  tft.setTextColor(TFT_WHITE);
  tft.setCursor(10, 50);
  tft.println("Video File Path:");
  tft.setCursor(10, 80);
  tft.println("/path/to/your/video.mp4"); // Replace with your actual file path
}

void loop() {
  // Your main code here (if needed)
}

vbee155 · February 17, 2024, 7:30pm

Also to be clear, it's saying:
Sketch uses 34824 bytes (107%) of program storage space. Maximum is 32256 bytes.
Global variables use 294 bytes (14%) of dynamic memory, leaving 1754 bytes for local variables. Maximum is 2048 bytes.

david_2018 · February 17, 2024, 7:44pm

Which board are you compiling for, and is that board set correctly in the IDE?

vbee155 · February 17, 2024, 7:45pm

I'm using Arduino Uno R3 and I am pretty sure it's set correctly

xfpd · February 17, 2024, 8:24pm

I get a similar report on my Nano (113%). I suppose the library file is meant for MEGA or ESP32

Sketch uses 34824 bytes (113%) of program storage space. Maximum is 30720 bytes.
Global variables use 294 bytes (14%) of dynamic memory, leaving 1754 bytes for local variables. Maximum is 2048 bytes.
Sketch too big; see https://support.arduino.cc/hc/en-us/articles/360013825179 for tips on reducing it.
text section exceeds available space in board

The library assumes something with large memory...

[...cut]TFT_eSPI\Extensions/Smooth_font.cpp:327:40: warning: left shift count >= width of type [-Wshift-count-overflow]
     val  = pgm_read_byte(fontPtr++) << 24;

vbee155 · February 17, 2024, 8:29pm

Ohh okay so should I buy a mega?
I'm going to try attaching multiple screens at some point so I assume I'll need a lot more memory.

xfpd · February 17, 2024, 8:37pm

No. You should find what you need. If you can use a different library (there are plenty that fit in a Nano/Uno), that would be good. It all depends on your needs.

vbee155 · February 17, 2024, 9:38pm

Okay I changed libraries and my new code is:

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

// Define pins
#define TFT_CS    8
#define TFT_DC    3
#define TFT_RST   4

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  tft.initR(INITR_BLACKTAB); // Initialize TFT display
  tft.setRotation(1); // Set display rotation (0, 1, 2, or 3)

  // Fill screen with a color (optional)
  tft.fillScreen(ST7735_BLACK);

  // Display the file path
  tft.setTextSize(2);
  tft.setTextColor(ST7735_WHITE);
  tft.setCursor(10, 50);
  tft.println("Video File Path:");
  tft.setCursor(10, 80);
  tft.println("Users\\14155\\Desktop\\RSSET.mov"); // Replace with your actual file path
}

void loop() {
  // Your main code here (if needed)
}

It's uploading which is a big step in the right direction!! (thank you)
but.. the screen is just showing black.
any ideas?

it was also recommended to me that I move the BL pin to 3.3v and the VCC to 5v

xfpd · February 17, 2024, 10:16pm

When you installed the library, it created an example folder. In your IDE >> FILES >> EXAMPLES >> ADAFRUIT ST77XX >> (some example). See how the examples set up the TFT and do their graphics or text.

vbee155 · February 17, 2024, 10:26pm

I tried that and it ended up showing a lot of errors but I will try again later tonight

xfpd · February 17, 2024, 10:31pm

Posting the errors will help.

xfpd · February 17, 2024, 11:19pm

You started another topic of the same subject. That tells me that I am no longer needed.

vbee155 · February 18, 2024, 1:34am

it was a new problem so I started a new more accurate post sorry

vbee155 · February 17, 2024, 9:45pm

Hi! this is kind of an evolution of an old post because it was no longer in the right category..

My screen is just showing black and I can't figure out how to fix it! please help- any suggestions are welcome but I don't have a Potentiometer

I have the following LCD screen:
Amazon.com: waveshare General 2inch IPS LCD Display Module 240×320 Resolution 2.0inch Monitor Embedded Controller RGB, 262K Color Display Color LED Backlight ST7789 Driver SPI Interface : Electronics

and I am using the Aruino egloo uno R3

my pins are:
VCC -> 5V
GND -> GND
(MOSI) DIN -> D7
(MISO) CLK -> D6
CS -> D8
DC -> D3
RST -> D4
BL -> 3.3V

and my code is:

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

// Define pins
#define TFT_CS    8
#define TFT_DC    3
#define TFT_RST   4

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  tft.initR(INITR_BLACKTAB); // Initialize TFT display
  tft.setRotation(1); // Set display rotation (0, 1, 2, or 3)

  // Fill screen with a color (optional)
  tft.fillScreen(ST7735_BLACK);

  // Display the file path
  tft.setTextSize(2);
  tft.setTextColor(ST7735_WHITE);
  tft.setCursor(10, 50);
  tft.println("Video File Path:");
  tft.setCursor(10, 80);
  tft.println("Users\\14155\\Desktop\\RSSET.mov"); // Replace with your actual file path
}

void loop() {
  // Your main code here (if needed)
}

paulpaulson · February 17, 2024, 9:53pm

cherk · February 17, 2024, 11:19pm

Suggest using the correct library for the LCD driver.
ie: ST7789 NOT <Adafruit_ST7735.h> and follow the pin setup as per the data in the linked information.

vbee155 · February 18, 2024, 1:35am

Okay I will try- the library that I originally used was too big for the board so it was recommended that I try this one

hammy · February 18, 2024, 8:35am

Wire and use as per the library examples first , then you’ll know if you have a hardware issue .
Use you boards default SPI connections

PaulRB · February 18, 2024, 8:41am

So it's kind of cross-posting, which is kind of against forum rules....

Topics can be moved between categories. Just ask.

vbee155 · February 20, 2024, 12:48am

Okay using the examples I've gotten pretty far.
But, the screen is just showing like basically TV static. It was showing the example drawings well but I can't get it to corporate with my image path.
I've been trying to teach myself so sorry if I am going about this very wrong.

This is my new code:

#include <SPI.h>
#include "LCD_Driver.h"
#include "GUI_Paint.h"
#include "image.h"

void setup()
{
  Config_Init();
  LCD_Init();


  

  Paint_DrawImage("Users\14155\Desktop\digole sun.bin",1, 1, LCD_WIDTH, LCD_HEIGHT); 
  //Paint_DrawFloatNum (5, 150 ,987.654321,4,  &Font20,    WHITE,   LIGHTGREEN);

  Serial.println("Debug message");

}
void loop()
{
  
}

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LCD screen = TV static, see post 24-evolving problem

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