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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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?
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276 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. ...
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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 ...
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Looking for hardware - 3.5" TFT with capacitive touch

I'm looking for a 3.5" display (480x320) with a capacitive touch attached. Anyone have some experiences? I want to drive the display with 8bit. If there are existing libraries that would be highly ...
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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 ...
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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 ...
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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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219 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 ...
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298 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 ...
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586 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 ...
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245 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 ...
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1answer
156 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 ...
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1answer
331 views

i2c scanner stuck on scanning for my 0.96in OLED screen with my Arduino Nano

My pins are connected as follows; vcc-3v3, gnd-gnd, sda-A4, scl-A5.
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67 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 ...
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54 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 ...
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301 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 ...
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59 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 ...
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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-...
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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 ...
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674 views

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 ...
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1answer
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I´m trying to make a kind of videogame with Arduino UNO

it´s a school project, but I'm having some problems to create a menu selection. In the LCD, all the character are overwriting, I'm a beginer, so i dont have any idea of what i was doing wrong (ps.: ...
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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....
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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. ...
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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 ...
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1answer
59 views

Can't swipe between RTC and some event

Some ideas please? I'm stuck and also don't judge me for how i wrote the code. I'm new into coding and still learn. So, the idea is that i want to display data and clock on lcd but when the lamp is on ...
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589 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 ...
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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 ...
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610 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 ...
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117 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 ...
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143 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. ...
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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 ...
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53 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 ...
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346 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,...
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28 views

Motor Control with Arduino and Nextion Display

I have a 12V DC motor with encoder powered by an L298N motor driver module communicating with an Arduino Nano with interfacing with a Nextion Display. The wiring setup can be seen from the attached ...
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1answer
102 views

Estimate soc battery and discharge time using Arduino Uno

I am currently learning to do a project for estimating the soc of LiPo batteries with coulomb counting and calculating discharge time using Arduino Uno to display a warning when the battery runs out. ...
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754 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 ...
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255 views

Adafruit FT6206 controller won't start after unrelated code changes

I am using an Adafruit HUZZAH32 Feather with the ESP WROOM32 module and an Adafruit 2,8" cap touch Display. When trying my code I encountered a strange problem: one specific line of code lets the ...
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232 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....