Questions tagged [tft]
A thin-film transistor (TFT) screen
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Elegoo 2.8" TFT touchscreen touch pressure
Disclaimer - I'm a noob! My first Arduino project.
I have an Elegoo Uno and a 2.8" TFT touchscreen. I have been doing copy and paste example code & have displayed a bitmap, determined the x/...
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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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1
answer
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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
...
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0
answers
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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 ...
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2
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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 ...
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0
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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 ...
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1
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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 <...
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1
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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 ...
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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 ...
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2
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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 ...
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0
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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....
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2
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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 ...
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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 ...
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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 <...
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1
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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 ...
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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 ...
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1
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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 ...
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2
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0
answers
140
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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 ...
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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 ...
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0
answers
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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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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 ...
1
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1
answer
488
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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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2
votes
1
answer
379
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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" ...
- 155
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votes
1
answer
93
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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 ...
3
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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. ...
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2
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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 ...
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0
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534
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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 ...
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1
answer
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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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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 ...
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1
answer
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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
#...
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1
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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 ...
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3
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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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1
answer
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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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0
answers
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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; //...
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0
answers
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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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0
answers
147
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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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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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3
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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 ...
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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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2
answers
623
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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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0
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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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2
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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" ...
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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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0
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203
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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!
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1
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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 ...
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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 ...
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1
answer
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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 ...