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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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
1 answer
179 views

Adafruit OLED 7-pin display - Abbreviations

I can't remember for the life of me how exactly I set up this screen in previous models, partially because the references I'm using in my code have different names from the pins on the Adafruit ...
Tyler Wallentine's user avatar
2 votes
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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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272 views

Strange things happening with Arduino PROGMEM

I am currently working on a display library. The font should be stored in PROGMEM. The code looks something like this: unsigned int i = 0; Serial.println(pgm_read_byte(&font[1]),HEX); unsigned ...
w7sbc's user avatar
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SSD1306 - Is there a way to scroll a certain number of pixels only?

For a hobby project, I am trying to make some sort of little game with an ATtiny85 and an SSD1306 OLED display, mostly to see how much I can do with the least hardware possible. Something like Captain ...
jyoungdev's user avatar
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158 views

Display unresponsive in one sketch, while working in another

I'm using a DOGM163 Display. It works in a DEMO sketch provided by the manufacturer but not in my sketch. This is strange, because I am using the same library specific commands as in the example. I ...
Ariser's user avatar
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247 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
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61 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
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64 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
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0 answers
120 views

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
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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
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110 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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133 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
1 vote
1 answer
350 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
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1 answer
234 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
1 vote
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75 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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56 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
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545 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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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
1 vote
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2k views

How to use LCD display HD44780 with arduino without using any library

My professor wants me to implement a display to an old project prototype we had laying around on the lab. But he wants me NOT to use LiquidCrystal.h library or any other to achieve that. I read ...
Augusto Filho's user avatar
1 vote
0 answers
496 views

esp32 e-paper driver not working

I am trying to setup waveshare 7.5 display (Waveshare_7_5) with esp32 e-paper driver using ESP32-e-Paper-Weather-Display My code is here https://pastebin.com/raw/2zQDe9a9, have corresponding ...
rp346's user avatar
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93 views

Arduino Uno and 7 segment display - wrong value displayed

I am working at this project and I found that if I have set the temperature by rotating the pot to 312 C, the iron started heating up, but when it was at about 60 C then on the display (7 segment, 3 ...
beard999's user avatar
1 vote
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59 views

How to pause the analog value according to input signal applied to a particular digital pin?

I'm working with a digital blood pressure meter using arduino nano. I need to display the pressure reading during inflation and deflation of the cuff instantly. And when an input signal applied to a ...
Mstar3's user avatar
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787 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
115 views

Topic: How to draw a circle on LCD128x64?

I want to know what's the default or recommended arithmetic to draw a circle on the LCD128x64 using ST7920 driver. I've done the following functions: drawing a pixel at any point on the LCD sending ...
R1S8K's user avatar
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42 views

Dim 4k LCD panel in response to ambient light

Warning: I'm completely new to Arduino, and not even sure if it's the right solution here. I'm trying to make a better digital picture frame. Got almost all the way there by just buying a nice flat-...
BulletCatcher's user avatar
1 vote
0 answers
53 views

Text got scrambled on Tinyscreen+

Yesterday when I was trying to reset my Tinyscreen+ by using a needle to flick its power switch (because the case made it hard to do it with my fingers). It was a bit clumsy and I may had shorted some ...
Rio6's user avatar
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Arduino nano with 128x64px OLED freezing

I have an arduino nano, MCP3424 i2C ADC and a 128x64px i2C OLED display. The function is quite basic; the arduino receives information from the ADC and prints it to the screen as described in the code ...
Asyu7's user avatar
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TM1637Display is not updating on loop

Alright so I've been trying to update/change the number on the display during a loop, but nothing really happens. It doesnt change/update, the value is always exactly same. #include <TM1637Display....
Tomislav Tomi Nikolic's user avatar
1 vote
0 answers
74 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. ...
zac5482's user avatar
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1 vote
0 answers
190 views

Arduino 3.5" TFT Display going blank after sending data through I2C

I'm trying to use I2C to send and receive commands between an Arduino UNO R3 and an Arduino Mega R3, with a 3.5" TFT display connected to the Mega. I have verified that my display is fully functional ...
CoderWithADream's user avatar
1 vote
0 answers
912 views

What am I missing? ST7735 TFT white screen

I followed this guy's guide with regards to wiring, etc., and all I seem to be getting is a white screen, as shown in these pictures. Is there an issue with the guy's guide, I'm missing or there is an ...
BradSabbath's user avatar
1 vote
0 answers
2k views

How can I put this display SSD1306 to sleep?

I have built a kitchen timer and it is supposed to spend most of its life in sleep mode in order to save power. I am using the SSD1306Ascii library (SPI) by William Greiman. In this library I have ...
fertchen's user avatar
1 vote
0 answers
753 views

White squares LCD display

for a school project I need to program a display. I've got in almost working. I made a setup screen in the setup() that just says our groupname and the name of our project for 8 seconds (this works ...
user53595's user avatar
1 vote
0 answers
151 views

Arduino nano -> 74HC595 -> LCD display

Greeting to all, Newbie in the contraption above (Arduino nano -> 74HC595 -> LCD display); I would like some help from the experts. I connect the 74HC595 to the LCD display using the 4 wires as ...
E. de Spot's user avatar
1 vote
0 answers
174 views

Waveshare Display on ESP32 has weird graphic glitches

I am trying to pass an image to the display through the GxEPD module. I tested the display and its working fine with an example sketch. I am using a WEMOS LOLIN32 and a 7,5" B/W Waveshare display. ...
Flying Thunder's user avatar
1 vote
0 answers
58 views

Tap into display signal

(Newbie Arduino developer). I am interested to read the signal being sent to a small flat screen display in an industrial appliance, while not disturbing the display. The goal is to capture ...
Dennis Thrysøe's user avatar
1 vote
0 answers
367 views

Restarting Arduino changes cursor position on OLED

I got an 16x2 OLED Display (DEP 16201-Y , compatible to the HD44780 controller) for my Arduino Uno and I got it to work in 4-bit Mode. Code: #include <LiquidCrystal.h> LiquidCrystal lcd(13, 12,...
Niklas's user avatar
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0 votes
1 answer
14 views

How to connect TFT screen (ST7735S) to Arduino?

I'm learning to work with Arduino and I decided to work with a TFT display (driver ST7735S, I connect to Arduino Uno), but I encountered a problem in the form that my contacts are labeled differently ...
Prog's user avatar
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0 answers
78 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
0 votes
1 answer
348 views

Connecting microSD reader and e-paper display to Nano at the same time?

Pretty much as the question states, I'm wondering if it's possible to connect (this: https://www.waveshare.com/7.5inch-HD-e-Paper-HAT.htm ) 7.5" e-paper display that has raspberry pi HAT and an ...
Dominik Gurvic's user avatar
0 votes
0 answers
1k views

Reducing the noise of an SSD1306 display by reducing pre-charge in Adafruit SSD1306 library

I have issues with electrical noise on my board (>300mV switching noise on top of 3.3V rail, its quite a lot), which is generated by my I2C SSD1306 OLED display. After some research I found that the ...
Anthropomorphous Dodecahedron's user avatar
0 votes
1 answer
382 views

OLED not updating display

I'm trying to connect a GPS unit (GY-GPS6MV2) and an OLED screen as in the diagram below (green connector is GPS; VCC, RX, TX, GND left to right): Here's the code I've come up with: #include <Wire....
Jim421616's user avatar
  • 188
-1 votes
1 answer
82 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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