Questions tagged [tft]

A thin-film transistor (TFT) screen

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How to initialize classes in classes?

I ran into a problem when combining examples from Arduino ESP32 code examples. As I am not sure if I go the right way, let me explain the background: There is a clock example that draws the clock on ...
Astralix's user avatar
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Code for ST7789 NO CS pin - Using XIAO ESP32C3

I am trying to get anything out of this screen except for blackness. The CS pin is present based on the coupling or resistors and capacitors on the back of the display. I have tried using the Arduino ...
Reese Houseknecht's user avatar
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Can TFT displays share the same RST?

I am trying to connect up to 5 TFT displays to one Arduino Uno R3 and use a multiplexer to control the output to each display. At the moment I am stuck being able to only write to a single one. Every ...
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Multiple TFT's not displaying

I am trying to connect about 5 TFT's to my Arduino Uno and I got to the point of hooking two of them up without any issues. However, after a code upload, they stopped working. I then took all the code ...
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TFT Screen with Arduino UNO does not display as expected

I have a 3.5" TFT LCD communicating in parallel connected to Arduino UNO. I expect it draws a white circle on a black background but all it does is to show a white screen. How to fix this? main.c ...
ar2015's user avatar
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How do I interface my ESP32 board with my 3.5" TFT Screen

I've bought an ESP32 board from here and a 3.5" TFT Screen from here. The ESP32 board has an UNO type layout so I thought it would work with the screen which is designed to plug in and play with ...
hydroxy's user avatar
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TFT display shows black stripes

I'm new to the field: I'm trying to drive a TFT ST7735S display (this is the model I'm currently using: https://www.amazon.it/dp/B078JBBPXK/ref=pe_24968671_487022601_TE_SCE_dp_1) with an Arduino Mega ...
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When a button is pressed, it interferes with TFT screen

I'm trying to build a simple device to monitor my heart rate. The components are the following: A TFT 2.8" LCD screen to display relevant information for the user. 3 buttons for the user to ...
Arnau's user avatar
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SPI protocol with multiple devices

I need to write and read the measurements received by a sensor on an SD card. The card reading would be to display the data on a TFT screen. Specifically, I am using the 1.8-inch ST7735 screen. To use ...
Libegria's user avatar
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Turn off backlight on 2.4" TFT screen

I have an Arduino Due and a 2.4" TFT screen shield this one. I'm trying to turn off the backlight to save power but not having any luck. I'm using the super nice MCUFriend library: #include <...
Jesse Pangburn's user avatar
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Mega 2560 with Adafruit Music Maker and TFT - Pin reroute

I'm building a custom headunit for my motorcycle using the Arduino platform. I wanted to try it as the modular nature of the board and shields looked very versatile. While there does seem to be plenty ...
Mighty Ferengi's user avatar
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Possible way to interface a TFT touch panel with Arduino [duplicate]

I have a salvaged 40-pin TFT touch panel, and I am trying to see if I can control it with an Arduino. What are my chances of getting a driver for it ? I bought a RA8875 Driver Board from Adafruit, but ...
Yu Fan's user avatar
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2 answers
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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 ...
Gabriel Lincoln's user avatar
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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....
Renier Jr.'s user avatar
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2 answers
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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 ...
cptcrabcakes's user avatar
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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'...
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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 ...
JuniorPenguin's user avatar
1 vote
1 answer
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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 <...
JCSB's user avatar
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1 answer
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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 ...
OrangeBike's user avatar
2 votes
1 answer
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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 ...
Rich Maes's user avatar
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1 answer
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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 ...
ar6rider's user avatar
2 votes
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173 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 ...
Rick Dearman's user avatar
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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 ...
Sven Onderbeke's user avatar
1 vote
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540 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 ...
faiz07's user avatar
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2 votes
1 answer
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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 ...
Louis Janse van Rensburg's user avatar
1 vote
1 answer
527 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. ...
Max Amende's user avatar
2 votes
1 answer
452 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" ...
Sven Onderbeke's user avatar
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1 answer
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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 ...
DragonflyRobotics's user avatar
3 votes
1 answer
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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. ...
DragonflyRobotics's user avatar
-1 votes
2 answers
154 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 ...
DragonflyRobotics's user avatar
1 vote
0 answers
614 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 ...
Sven Onderbeke's user avatar
5 votes
1 answer
2k 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/...
WildCat's user avatar
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1 answer
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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 ...
Erik Weisbrod's user avatar
-2 votes
1 answer
174 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 #...
Yang Yu's user avatar
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2 votes
1 answer
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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 ...
shafiyyah's user avatar
0 votes
3 answers
2k 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 ...
Nabeel Hussain Shah's user avatar
1 vote
1 answer
1k 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 --- ...
Pradeep's user avatar
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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; //...
Engr.Double_minded's user avatar
1 vote
0 answers
805 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 ...
Engr.Double_minded's user avatar
1 vote
0 answers
155 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" ...
vinita's user avatar
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671 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 ...
athoe's user avatar
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1 vote
4 answers
3k 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 ...
JingleBells's user avatar
1 vote
0 answers
267 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 ...
Andi Stancu's user avatar
0 votes
2 answers
670 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 ...
bennygenel's user avatar
1 vote
0 answers
139 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 ...
ilakast's user avatar
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0 votes
2 answers
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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" ...
vasili111's user avatar
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1 vote
0 answers
784 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 ...
KAPIL KUMAR VERMA's user avatar
1 vote
0 answers
212 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!
haluuu's user avatar
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1 answer
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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 ...
jaduuuui's user avatar
-1 votes
1 answer
5k 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 ...
bircastri's user avatar