Questions tagged [tft]

A thin-film transistor (TFT) screen

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2answers
41 views

LCD TFT 2.4"" changes the values of analog read of Arduino Mega

I have a Arduino Mega with LCD TFT 2.4"" with reading 5v signal on A8 pin (Arduino mega pin) from a raspberry pi (just to test). They are grounded together. When the Arduino is without the ...
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1answer
545 views

Can a push button be used for TFT LCD screens?

I am trying to link my TFT LCD touch screen to a few push buttons. May I enquire why my code is not working? I'm trying to link the screen and the button so I'm trying to make the image display a ...
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1answer
577 views

Use JYETech 2.4 Inch LCD Display Screen Module with Arduino?

I have this JYETech 2.4 Inch LCD Display Screen Module that I would like to use for a project I have in mind, however, I'm not sure how to wire it up with my Arudino Mega. Here is the datasheet for ...
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0answers
42 views

2.4" TFT LCD is only showing white screen, but the touch functions still work

Hi (Sorry for the long post). The other day I finally found a code that worked on my standard 2.8" TFT LCD by Simkeim, but then I pressed the bottom left corner too hard and the screen went white....
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1answer
107 views

Is there a Arduino UI library that provides dialog box and button functionality at a minimum?

I have been looking at the Arduino TFT Library and it supports all the bits and pieces for making a simple display, but I am looking for something a little higher level that has primitive dialog box ...
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1answer
47 views

Use normal TFT Shield with SD as a Nextion Display

I have a normal Elegoo TFT 2.8" display shield that also had an SD reader. I am trying to use it as a Nextion display. I want to do this because the Nextion tool allows you to make very nice ...
2
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2answers
57 views

Using the touchscreen.getpoint causes program to instantly crash

this code runs fine until I add in the if statement surrounding the draw screen() method. upon clicking the screen, the program instantly crashes, turning the screen white. any help would be ...
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0answers
28 views

Driver configuration not showing the right numbers on the Graphics Test example's serial monitor for Adafruit IlI9341 library

I have a 2.8" Color TFT Touchscreen from Adafruit, and I'm currently trying to set it up. I've been following this guide to set up the screen. The screen powers on when connected to power, but it'...
2
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1answer
210 views

Trouble obtaining values from Nextion screen to Arduino

Currently I have a setup running an Arduino BME 280 sensor and a 4.3" Nextion screen. What my program does is sent all the calculated values from the BME to numbers and progress bars in my ...
4
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1answer
590 views

ST7789 TFT display only shows a correct image while Arduino reset button is held down - Why?

I am trying to get the ST7789 TFT display to work with Arduino. I followed online guides for connections and am using the fast library fron github and included workbench ino (https://github.com/...
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2answers
392 views

how to fix mirrored text on 3.2 inch IPS TFT LCD Display ILI9481 480X320 36 Pins for Arduino Mega2560

i am working on a project on my arduino mega2560. I want to show reading of the sensors on the TFT display, the problem is the text displayed on the screen is mirrored. Since i am very new to arduino ...
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1answer
285 views

ST7735s 1.8" SPI 128x160 TFT Module - White Screen

I am having an issue in my 1.8" TFT LCD module with SPI interface in Arduino Nano. I keep seeing the white screen on my tft. I have made the following connections using Jumper cables: RST --- ...
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0answers
38 views

How to avoid two arduino components using the same digital PIN [duplicate]

I'm trying to build an Arduino project where it involves a TFT and an ethernet W5500 component. Here's the project I want to build to learn Arduino. However I wanted to change the board that already ...
1
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1answer
33 views

WDT ISR not called when SPI ST7789 module initiated

Using the .init function for the ST7789 TFT screen prevents my WDT ISR from firing. What explains this behaviour, and is there something I can do? Any other timer ISR I could use instead? #include <...
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0answers
47 views

anyone heard of MCUDEV_TFT1.44 display? I can't figure out how to connect it to Arduino

I bought this tft display on Aliexpress: https://www.aliexpress.com/item/1005001579367288.html?spm=a2g0s.9042311.0.0.72164c4doyqAub it says "MCUDEV_TFT1.44" below the display. I can't find ...
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3answers
846 views

ILI9341 backlight flickers when using USB power from Laptop

I've developed a project using am ILI9341, ESP12F and Arduino. Everything works fine except a very annoying issue. The LCD flickers when I use the laptop's USB. But when I use a USB charger it's much ...
1
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1answer
83 views

Drawing a line at a given angle

Im attempting a device that measures lean angle. I have an ESP8266 + MPU6050 + SSD1306 setup, and I've managed to build a shaky but somewhat functioning device. What Id like to do is use the ...
3
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0answers
88 views

Black screen when using higher SPI-speed for RA8857 LCD-controller

I'm using an Arduino Due that talks via SPI to an LCD (800x480) with the RA8875 controller chip. The most recent datasheet I could find is: RA8875 datasheet. Everything works as expected when using ...
2
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0answers
54 views

TFT Screen & ATMEGA168

I have a Arduinio nano and a ATMEGA168. I'm using the ST7789 library. The sample code which comes with the library runs perfectly and runs the display when using the Nano, but the same code does ...
3
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1answer
416 views

Alternatives to Nextion display

I am wanting to have a display where I can design the GUI on a program and then somehow transfer it to the display. For the graphics I want to make, it would be really hard to manually write the code. ...
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2answers
4k views

mcufriend 2.4 TFT with ESP8266

I have this TFT: Now, the problem is, I will not use this as a shield (i.e. I will not just put it on top of an Arduino Uno). I will use it with an ESP8266 (NodeMCU). I want to know how to wire them ...
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0answers
219 views

Getting Trouble in multiple ST7789 SPI LCDs (without CS) with ESP32

I am developing a product in which i have to use 5 LCDs. The LCD i am using does not contain CS pin. SO i had to use MUX for muxing of complete SPI bus from one LCD to other. But the issue i am facing ...
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1answer
468 views

Using TTGO TS 1.0 TFT display

I'm trying to use the TTGO TS 1.0 display with a demo app from a different source. The demo app wants the following to be configured: #define PIN_NUM_MISO 17 // SPI MISO #define PIN_NUM_MOSI 23 ...
1
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1answer
167 views

ESP32 with Lolin 2.4 inch TFT Shield Power control

I am running out of intelligence trying to control a Lolin 2.4 Inch TFT shield. I connected the shield via the official TFT connector to a Lolin D32 Pro. I am using the ILI9341 libary from Adafruit. ...
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0answers
95 views

Maximizing SPI-speed between Arduino DUE and RA8875 display driver

For a project I would like to be able to control my RA8875 display driver as quick as possible using an Arduino due. I started from the Adafruit library and replaces all "digitalWrites" ...
0
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1answer
27 views

Use Android on Arduino TFT

I don't know whether this is possible or not but is there any way that I can run something similar to Android on a normal TFT. I want to make complex graphics but can't program those complex programs ...
0
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1answer
2k views

Wiring parallel TFT with ESP32

I have this Parallel LCD TFT. I want to connect it with an ESP32 (NodeMCU). I am using the TFT_eSPI library. In the TFT_eSPI documentation, it says that the connection should be as following: // The ...
0
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2answers
6k views

Nextion Dual State Button

I am having an issue with my Nextion display. I have uploaded the following code via Arduino IDE to my Arduino MEGA 2560. My Nextion Editor shows the button as ID:9 on page0 named floor. I am not ...
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0answers
156 views

TFT menu system sometimes doesn't refresh the screen properly

I have a project in which I control a display using an Arduino Due microcontroller. The user can navigate on the TFT display (RA8875 driver ic) with a rotary enconder/pushbutton. The display shows a ...
1
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1answer
55 views

Object composition (class uses class)

I would like to write a class which utilises another class and it´s member functions. I found out that this is object composition and read some examples of how to do it but it ither doesn´t work for ...
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1answer
78 views

Arduino ESP32F-TFT-1.44 Driver

Datasheet https://github.com/espressif/esp-hosted/files/5190376/ESP-32F.pdf The below code is not working. I can see only White screen #include <Adafruit_GFX.h> // Core graphics library #...
2
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1answer
56 views

I want a bar type display for my Arduino Project

I am trying to make a smart table project. But I have stumbled upon one problem, that is I don't know which display should I use. I need a display that has roughly aspect ratio of 2:1 but also has a ...
0
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2answers
356 views

Ethernet Shield Not Working With TFT Screen

I'm trying to stack up Arduino UNO, Ethernet Shield and Waveshare 2.8" TFT Shield. Since I'm new to this I'm mostly doing basic stuff. I successfully manage to get ethernet shield and TFT shield to ...
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0answers
567 views

Problem with gps.encode() using TinyGPS library

First, see the schematics (attached). The GPS is working properly when I write code only for reading data from it as below: //Connect with pin 18 and 19 #include <TinyGPS.h> //long lat,lon; //...
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0answers
284 views

Display GPS module data to my TFT display

I am using Arduino Mega 2560 and I have written code for my GPS module (Neo-6m-0-001/GY-NEO6MV2) and it is working fine independently. I also have written code for Compass module (QMC5883L) which is ...
1
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0answers
88 views

Output of mlx90614 to mcufriend tft/lcd, not getting displayed

Newbie here !! Im trying to display the output of my MLX90614 sensor on mcufriend tft display (with arduino UNO). But unable to do so. I can only see the TFT being lit to white color, text -> "Target" ...
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0answers
197 views

Displaying Keypad Input on TFT Display

For a project of mine I have always wanted to build an electronic load and I am mostly done. However I have found myself stuck at one part that I thought would be simple but has thus only caused ...
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1answer
505 views

How to create and edit fonts for the Adafruit GFX library?

I noticed that the TomThumb.h font included in the Adafruit GFX library has characters that have different widths, which is a problem for me because I'm doing text processing that requires characters ...
1
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0answers
40 views

Arduino UTFT Touch align RIGHT with margin

I am using a TFT Touch screen on an Arduino Mega, with UTFT and UTouch libraries. When I use the code below, the text is aligning to right, all the way to the edge of the screen. Is it possible to ...
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0answers
52 views

Adafruit 2.8 TFT LCD Touchscreen 4 wire pins - unclear instructions

Warning - Noob question I am trying to follow the instructions provided by the vendor https://learn.adafruit.com/2-8-tft-touch-shield/touchscreen-paint-example to no avail. Specifically: We ...
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2answers
2k views

Slow refresh rate of 1.8 TFT display

I have 1.8 TFT display for Arduino Nano and it changes color very slow. When I try to change the color of the whole screen I see how it changes color line by line. I use "Adafruit GFX graphics core" ...
1
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2answers
1k views

Arduino NANO hardware SPI not working

I have an Arduino NANO clone and a 2.4" ILI9341 TFT display. The VCC and LCD pins of the display are connected to the 5V pin of the board. The GND to the GND. All the logic pins are connected to ...
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1answer
3k views

Increase or decrease the brightness of Nextion display

I have a nextion display. I want to implement this issue of it. Start the program. If for example I don't touch the display for 15seconds, it should to turn off its brightness. If I touch the screen ...
5
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5answers
21k views

How to dim background LEDs on TFT display with ILI9341

I have bought a 2.5" TFT shield online, which is equipped with the ILI9341 controller. I need to dim the intensity of the background LEDs to match ambient light. This particular shield does not ...
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0answers
300 views

Generate & Display QR using Nodemcu on TFT Display ST7789 240*240

I have NodeMCU & ST7789 TFT display. I want to generate QR Code of any dynamic input and display it on my TFT display. Not able to find any suitable reference. All Standard QR code libraries only ...
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0answers
131 views

Arduino TFT LCD Data Logger

Can I use Arduino TFT LCD Module ILI9341 as a data logger? It has an SD card slot at the back, I wonder if the data will be saved on the SD card? Thanks!
0
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1answer
165 views

Menus not changing when button is pressed TFT 128 x 128

I've just followed a tutorial so that when a button is pressed it goes through a menu. Click once, next slide. Only issue is it isn't appearing on my screen at all. It has uploaded but I'm a total ...
0
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1answer
922 views

How to make a custom character on a TFT LCD display? (128x128)

I'm currently using the ucglib library. I'm new to arduino and I'm wanting to simply display a lcd smiley I made with the byte generator. I still have some of the original 'font hello world' stuff ...
1
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0answers
50 views

TouchScreen GUI Reference Guide Help

Recently I have gotten some Touchscreens to add to my projects and I am very excited to use them. However, I am not sure where I can find a guide to help me create my own GUI with the touchscreens. ...
1
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0answers
270 views

Why does my TFT keep turning white after moments?

Alright, seems there is something wrong I am doing that I don't understand. Before I start explaining, my question is different than this white screen question. First of all my TFT ST7735 is working ...