Questions tagged [tft]
A thin-film transistor (TFT) screen
97
questions
6
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5
answers
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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 ...
- 394
5
votes
2
answers
3k
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How to measure resistance of TFT Touchscreen
I'm using a TFT Touchscreen shield with my Arduino UNO, and I'm running "tftpaint" example by Adafruit.
I've noticed that when initializing the Touchscreen object, a resistance value must be provided....
- 326
5
votes
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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5
votes
2
answers
2k
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Which tft works on both Arduino Uno and Raspberry pi
Ideally I'd like a 2.8 inch and it to be touch screen.
But most of all I'd rather it work on both boards without much hassle.
- 151
4
votes
0
answers
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Arduino UNO with NRF24l01 + touch screen [closed]
I have an Arduino UNO, a NRF24L01 as receiver (receive data from elsewhere), and this touch screen from Adafruit for display and control.
The Adafruit TFT is a shield so it fits the UNO perfectly.
...
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3
votes
1
answer
2k
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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. ...
3
votes
0
answers
157
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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 ...
- 155
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 ...
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2
votes
2
answers
1k
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How to expand an Arduino when using a TFT display shield?
I am really new to this Arduino stuff. I can't figure out one of my problems on my own.
I am using this 2.4 TFT display shield on an Arduino Uno. It works fine so far: I have coded a little sketch ...
- 121
2
votes
1
answer
406
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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
2
votes
1
answer
85
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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 ...
- 131
2
votes
1
answer
550
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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 ...
- 233
2
votes
1
answer
903
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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 ...
2
votes
1
answer
2k
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5 inch TFT LCD for Arduino
I want to use a 5 inch 800x480 TFT display (touch not needed) with an Arduino (mega, uno or due). I'm thinking of buying this display: link (buydisplay.com). How can I connect this ?
I have also ...
- 121
2
votes
1
answer
5k
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Arduino Video player?
I want to play video from SD card by using arduino mega 2560 and TFT 3.2" touch screen is it possible ?
if yes please tell me.
thanks in adavance
2
votes
0
answers
89
views
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
...
- 173
2
votes
0
answers
1k
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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 ...
- 21
2
votes
0
answers
162
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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 ...
- 163
2
votes
0
answers
89
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Bug read an image from SD card and draw it on TFT
I have developed a code to read an image stored on my SD Card and display it on a TFT. I can read the image from the SD Card successfully but I cannot draw it on the TFT. I dunno where is the bug.
...
- 21
2
votes
0
answers
70
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Esplora: Connecting a 2-Wire Speaker to Arduino Esplora
I am currently trying to make a simple game system with my Arduino Esplora, however I have noticed something. The Arduino Esplora has no pins for a 2-pin speaker that I get from a RadioShack store (...
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1
vote
2
answers
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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 ...
- 155
1
vote
1
answer
889
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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 <...
- 123
1
vote
1
answer
3k
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Connecting LCD TFT shield to NodeMCU
I have the following screen:
I want to connect it to a NodeMCU device:
I read somewhere that it is not possible. However, I am not interested in the touch ability nor the SD card. I just want to ...
- 135
1
vote
2
answers
267
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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 ...
- 21
1
vote
1
answer
66
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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 <...
- 111
1
vote
2
answers
2k
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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 ...
- 13
1
vote
2
answers
110
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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 ...
1
vote
1
answer
361
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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 ...
- 21
1
vote
1
answer
492
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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 ...
- 13
1
vote
1
answer
508
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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. ...
- 13
1
vote
1
answer
1k
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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 --- ...
- 11
1
vote
1
answer
692
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 ...
- 31
1
vote
1
answer
3k
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Using Waveshare Raspberry Pi TFT LCD with Arduino Uno
I have a 3.5 inch Waveshare Raspberry Pi TFT LCD which uses the XPT2046 Touch Controller. I want to use this LCD screen with my Arduino Uno.
I originally believed something like this was impossible, ...
- 111
1
vote
1
answer
4k
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Connecting multiple TFT panels to Arduino Uno via SPI?
Is it possible to connect more than one TFT screen (like this one or similar: https://www.adafruit.com/products/1651) to an Arduino Uno?
I'm wanting to connect and control two color screens at once; ...
- 113
1
vote
1
answer
76
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TFT screen to change sketches
I have an Uno + WiFi 101 thermometer and I'd like to be able to take it places and easily change WiFi network SSIDs and passwords. Can I use a TFT screen to make these changes to a sktech or am I ...
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1
vote
0
answers
62
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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 ...
- 113
1
vote
0
answers
208
views
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
vote
0
answers
36
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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 ...
- 11
1
vote
0
answers
319
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....
- 99
1
vote
0
answers
40
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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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1
vote
0
answers
38
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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 ...
1
vote
0
answers
495
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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 ...
- 11
1
vote
0
answers
576
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 ...
- 155
1
vote
1
answer
136
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 ...
1
vote
0
answers
2k
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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; //...
1
vote
0
answers
750
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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
vote
0
answers
149
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" ...
- 111
1
vote
0
answers
595
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 ...
- 11
1
vote
0
answers
243
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 ...
- 33
1
vote
0
answers
129
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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