Questions tagged [display]

A visual output device typically capable of displaying text and/or graphics. Can include various technologies, such as LCD, OLED, and TFT.

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Newhaven NHD-320240WG-BxTFH-VZ# display does nothing

I am trying to get this display working on a Arduino Mega2560: https://newhavendisplay.com/content/specs/NHD-320240WG-BxTFH-VZ.pdf Below how the display is supposed to be connected to an MPU (in my ...
Bart Friederichs's user avatar
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57 views

Make encoder work together with OLED display in Arduino Nano Every

I tried to sketch code to make an encoder to generate a number by each step and show it on OLED display. The OLED will connect with I2C, working on in Arduino Nano Every ATmega4809. I separately made ...
Tanwa Kankang's user avatar
2 votes
0 answers
169 views

GPS speedometer with NEO 6M - latency issue

I have built a speedometer, based on this youtube video: https://www.youtube.com/watch?v=gKuJxjxNP-k&t=34s The speedometer is for a car, so it needs to be in real-time and accurate, with the ...
cool bean's user avatar
2 votes
3 answers
414 views

Display images on Arduino LCD screen from PC

I am new to arduino and I am wondering if it is possible to store image data on my computer and send it to my arduino over the USB cable (which is also used for power) to display on a TFT LCD display ...
Clinterpottrmus's user avatar
1 vote
0 answers
165 views

display.begin(); function breaks working code

I've been setting up a system using an Arduino Uno board that reads from both an Adafruit MPU6050 6-way gyroscope and accelerometer and an Adafruit NAU7802 connected to a load sensor. I have code for ...
HannahPlaysCello's user avatar
2 votes
1 answer
33 views

Having issues understanding what "#define GET_STATUS" does

I am trying to use a Waveshare 4.2inch e-paper display with an Adafruit Feather Adalogger M0, but am having issues with two separate instances of #define GET_STATUS being defined differently in ...
BeingPool's user avatar
1 vote
0 answers
39 views

How to create 2 individual daisy chains using the MAX7219 Module and Mega2560

I am using MAX7219 8 digit 7 segment displays with Arduino Mega2560. Now, I have to physically space out the displays far from each other. Hence, after a certain distance the displays on the far end ...
Soumarya's user avatar
1 vote
0 answers
56 views

Running a 5V, 4pin pwm fan with Mega2560

I have a Mega2560 and would like to use it to power a single fan and display. The fan is a 5V fan that draws 260mA and I can't find power specs for this display. I can't find a clear answer for how ...
David Carpenter's user avatar
0 votes
1 answer
580 views

How to scroll text on an OLED display using only the SSD1306Wire library?

I'm a 13 years old boy and I am doing a project with esp01 and an OLED screen to display project ideas on the OLED with the ChatGPT API. The answer is displayed on the OLED but I would like it to ...
Loic Daigle's user avatar
-1 votes
1 answer
71 views

strange behaviour with a single 7seg display

I'd like to display a sentence character by character on a single seven-segment display. What happens is that if my sentence is longer than 48 characters the central segment doesn't light up. It works ...
Fab_x's user avatar
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Converting code for driver IC IL0373 to SSD1680

I'm working on epaper display, and writing code in Segger embedded studio for nRF52840DK. Below is code for Driver IC IL0373 epaper display, has no response on paper display as it have driver IC ...
Just doin Gods work's user avatar
1 vote
0 answers
42 views

Things stop working if I use Serial.println(tt) and when I use display.drawPixel(i - ii, 64 - Harray[ii], SSD1306_WHITE);

Things stop working if I use line 131 Serial.println(tt); and when I use line 145 display.drawPixel(i - ii, 64 - Harray[ii], SSD1306_WHITE); Also Serial Monitor gives very strange reading. Serial ...
sasha kirilova's user avatar
-1 votes
2 answers
372 views

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 ...
Luke__'s user avatar
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1 vote
1 answer
127 views

WS2812b - Interpolate pixels on neopixel matrix with mask

simplified my goal is to display a transitional Background and some shapes. This shapes are not moving hard rasterized by 1 pixel, more like .1 each cycle. So I need a way to interpolate the movement ...
AngelOfEffekt's user avatar
1 vote
0 answers
88 views

Problems using HC-SR04 with LED displays

I'm having problems using an HC-SR04 ultrasonic sensor in conjunction with an LED display module. The sensor appears to work fine when outputting values to the serial monitor, measuring distances up ...
Nicholas's user avatar
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Problem with switching screens using U8glib

I'm making little project on my arduino nano using OLED display. I want to make 'boot screen'. If I will turn on device then Image1 should appear, wait few sec then Image2 should apear and then the ...
ItsSikorka's user avatar
1 vote
1 answer
380 views

Display issues with 4 Digit, 14 segment

I have this HT16K33 4 Digit 14-segment display I got brand new. I connected it to my Arduino UNO, wired it up and uploaded some quick test code. However, the display looks completely broken (see image ...
Benjythebee's user avatar
-3 votes
1 answer
76 views

displaying double variable problem (Arduino)

so I have a problem with displaying a double variable in OLED & IR remote calculator, like this (using u8g2): displayTextOnRight(String(100000, 0)); //ex. of an void and a number It displays: &...
warriorCavt's user avatar
1 vote
0 answers
110 views

Strange characters on display st7920

My Display is showing texts with strange characters in Chinese. how can i fix this #include <Arduino.h> #include <U8g2lib.h> #ifdef U8X8_HAVE_HW_SPI ...
Fabio Henrique's user avatar
0 votes
1 answer
95 views

LiquidCrystal issue with HD44780 display

Here my sample code for an Arduino Leonardo-based custom board: #include <LiquidCrystal.h> const int rs = 3, en = 0, d4 = 4, d5 = 30, d6 = 12, d7 = 6; LiquidCrystal lcd(rs, en, d4, d5, d6, d7); ...
Mark's user avatar
  • 357
2 votes
1 answer
77 views

Can this display's address be changed?

I need two displays hooked up to an Arduino MKR Wifi 1010, and I saw this video which shows how to do it: this video. I also would like to have a full color oled display about 1 inch big so I would ...
user avatar
1 vote
1 answer
287 views

LILYGO TTGO T-Display cannot detect MPU 6050 Accelerometer, Gyroscope and Temperature Sensor

I've been trying to connect a MPU 6050 Accelerometer, Gyroscope and Temperature Sensor to a LILYGO TTGO T-Display to get readings displayed on the serial monitor (for starters). The wiring is pretty ...
C Vith's user avatar
  • 93
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2 answers
53 views

reading strings from multiple Arduinos

So I have 5 Nanos all trying to crack a password, the idea is each one has one fifth of the list so they can test 5 at a time, then when it is found, I want it to be displayed on a screen I have, the ...
ProfMonkey07's user avatar
1 vote
1 answer
204 views

Multiple Arduinos connected to one display

I have one display screen, and 5 Arduino Nanos. They are checking to see if passwords in a text file hash to a specific hash, then display it on the screen when found. Since they aren't all sending ...
ProfMonkey07's user avatar
2 votes
4 answers
834 views

My program is using too much memory

I work in a warehouse and I was tasked to make a device which will show the location of any product when Product ID is given. All of our product has 3 things. Product ID, Rack Number and Gap number. ...
Imteaj007's user avatar
0 votes
1 answer
1k views

Convert String to const unsigned char

String abc ="0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff"; const unsigned char displaydata={reinterpret_cast<const unsigned char*>(abc.c_str())}; display.drawBitmap(...
Coder06's user avatar
-1 votes
1 answer
172 views

How to light up middle points in a display with 4 digits? [closed]

How to light up the two points that is in the middle? It only lights up when the digB is set to LOW, and it lights up all 3 points that is in the middle. Example code: const int displayPins[] = {2,3,...
mario's user avatar
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0 answers
67 views

Adafruit TFT 1.3 inch display with arduino-rotate the font

I am using Arduino MKR1500 with adafruit 1.3 inch display(https://www.adafruit.com/product/4313) and I want to rotate the font on the screen by 90 degree. I tried setRotation() and added an angle in ...
Dave's user avatar
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0 votes
1 answer
186 views

ESP32 WROOM32 SPI EMF issues

I'm trying to run Waveshare SSD1327 128x128 screen via SPI on ESP32 WROOM32 board. On ESP8266 (D1R1?) it works flawlessly while using HW SPI but when I run it on esp32, anything connected to mains ...
user1726744's user avatar
1 vote
1 answer
253 views

how to display text to 8x8 matrix with 64-bit long integers?

I have an array of 64-bit integers to display on an 8x8 led matrix const int LEN1 = sizeof(Hours); const uint64_t Hours[] = { 0x00043c3c3c3c3c00, 0x000c3c3c3c3c3c00, 0x001c3c3c3c3c3c00, ...
gio xanchkava's user avatar
0 votes
1 answer
115 views

Artefacts on display when adding seemingly unrelated code

I have this simple program, where I am implementing a menu structure on an OLED display and a rotary encoder. The code works functionally as intended, however when I add more menu items, then I get ...
Thomas Hirsch's user avatar
1 vote
0 answers
55 views

Program an lcd display with 12 pins

I have a screen just like this (is the datasheet). My question is, Can I use it to an Arduino board?
Wolffyx's user avatar
  • 21
1 vote
1 answer
128 views

Arduino lcd displays random chracters

I have connected arduino nano every to my lcd display. It works perfect when i put all my code in setup() part. But when i put the code in loop() it does werid things. I have to put my code in loop(), ...
animos_be's user avatar
0 votes
1 answer
416 views

ESP32 FREERTOS crash using Adafruit ST7789 in tasks with the Wifi enabled

I am trying to create a clock using a ST7789 display and a DS3231 RTC. In this clock I want to use NTP to keep it synced and maybe use the WiFi to anything else. My problem started when I have tried ...
Daniel Carrasco Marín's user avatar
1 vote
1 answer
356 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 ...
OrangeBike's user avatar
2 votes
1 answer
697 views

4 Digit 7 segment display flickering

I am attempting to make an Arduino counter using a 4 digit 7 segment display. The problem I am encountering is the display flickers. I am using an Arduino Uno and 5641AS digit display (so common ...
Sony's user avatar
  • 110
0 votes
2 answers
74 views

Detect if a display is connected

I want to detect wether a display is connected or not. This is the display: https://www.az-delivery.de/en/products/1-77-zoll-spi-tft-display I read connecting a pin of the display with another pin ...
Joh's user avatar
  • 113
-1 votes
1 answer
202 views

Efficient workflow/tools for converting color images to hex arrays

I would like to display 65k color animated gifs on my oled. I'm using the adafruit library for https://learn.adafruit.com/096-mini-color-oled Now I need to convert a significant number of images to ...
Andreas Hartmann's user avatar
2 votes
0 answers
1k views

Sending a JPEG from one Arduino to another

I've got an Arducam OV2640 which takes a picture as a JPEG that I'd like to send to another Arduino using a pair of nRF24L01 wireless transceivers to eventually display it on an SSD1351 OLED. ...
JShoe's user avatar
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1 vote
0 answers
493 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
  • 11
3 votes
2 answers
1k views

Nextion Display not getting updated data

I am using an Arduino Mega to display the readings of 4 pots on a Nextion Display as well as store them on an SD Card with a time stamp. I keep getting: recvRetCommandFinished err on the serial ...
Niteesh Shanbog's user avatar
1 vote
0 answers
898 views

Nextion won't update text using data passed in Arduino Uno serial print

Q: Is it possible to send data in variables from Arduino to Nextion through SerialPrint? If so, what is the correct syntax? I have an Arduino Uno connected to a Nextion NX4024T032 and a Sunfounder ...
Jonathan Talbot's user avatar
0 votes
1 answer
105 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 ...
DragonflyRobotics's user avatar
3 votes
1 answer
2k 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. ...
DragonflyRobotics'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
  • 303
1 vote
1 answer
202 views

Help in personal alarm clock project, cant write time on seven segment display

I'm trying to make a type of Arduino alarm clock, which when the time I inputed is equals to the current time, a servo will turn on my lights. It basically consists of a Keypad, an RTC DS1307 and a ...
Marcelo_M's user avatar
  • 121
2 votes
1 answer
1k views

OLED 'SH1106_WHITE' was not declared in this scope

I was following FREE Functions to draw graphs on OLED displays on YouTube but mine OLED display doesn't support Adafruit_SSD1306 library,but it works on Adafruit_SH1106.h driver. The code that is ...
VA splash's user avatar
  • 123
1 vote
1 answer
448 views

Arduino Nano and 0.96 i2c oled screen not working

When I try to scan the i2c address it stays stuck on "i2c Address Scanner" which is the first line of the code. My screen is connected with VCC-5V, GND-GND, SCL- 4.7K resistor->A5, SDA- 4....
peterk's user avatar
  • 121
2 votes
1 answer
107 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 ...
shafiyyah's user avatar
0 votes
1 answer
233 views

MD_Parola display issue when constructing test

I'm using ESP8266 and 4 dot Matrix Tiles, to display clock ( updates using NTP and WiFi ). Everything is working well, but only when I'm constructing text using a const char* type. But, since I wish ...
guyd's user avatar
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