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Questions tagged [oled]

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Error: void value not ignored as it ought to be done = radio.read(&Irms, sizeof(float));

Good morning everyone, I had this sketch that worked now when loading the program gives me an error: #include <Wire.h> #include <SPI.h> #include <nRF24L01.h> #include <RF24.h> ...
ksalva's user avatar
  • 11
1 vote
1 answer
95 views

Code review for timer using RTC and OLED screen

I am building a small art project to display my current age with an accuracy of 1/100th of a second. I am using a XIAO SAMD21, a DS3231 RTC, and a 128x32 OLED screen. Here is what it looks like right ...
Mir's user avatar
  • 113
1 vote
1 answer
101 views

OLED and Wifi not working together on ESP8266 Heltec NodeMCU

I have this ESP8266 Heltec NodeMCU board with OLED. The pins are described here. I have the following problem. The both OLED (with u8g2) and Wifi work fine individually. There is a problem getting ...
Fabian's user avatar
  • 151
1 vote
2 answers
214 views

DHT20 and OLED display not working together

I am trying to get my DHT20 and OLED (both from the Arduino Sensor Kit) to work at the same time. I am able to get them working separately with their respective test codes, but when I try to combine ...
Darren D'Arcy's user avatar
0 votes
0 answers
99 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
314 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
1 answer
76 views

Functions delaying gesture sensor recognition

I am working on a simple little robot to cure my boredom and all it has is a 64 x 32 OLED for the eyes, and a PAJ7620 Gesture recognition sensor with a Seeeduino Xiao as the main board. Basically, ...
Renier Jr.'s user avatar
0 votes
1 answer
71 views

NodeMCU code that both display OLED and control WS2812 LED Ring

I'm trying to make a project using NodeMCU that show pictures in small OLED screen and also controlling WS2812 LED Ring. I manage to do each of them separately but I'm not sure how to mix them ...
Ido Ran's user avatar
  • 149
5 votes
2 answers
497 views

Arduino Freezes (probably because of I2C) - Need help to write robust script

Arduino Pro mini 3.3V stucks few hours after startup. After repowered, it begins to stuck within a few seconds. If I wait long enough before turning it on it stucks little later for example now it ...
CaveScientist's user avatar
2 votes
0 answers
403 views

Scrambled Text on SSD1306 Using ESP32-S2

SSD1306 OLED display connected to an ESP32-S2 over hardware I2C. I noticed that the text will sometimes get scrambled or lag during a screen update. When left running long enough, the screen will get ...
subcanny's user avatar
1 vote
0 answers
60 views

Arduino sketch doesn't work when uploaded to arduino nano and OLED display shows npothing (possible issue: lack of memory)

I need some hand here. I wrote some code for a small arduino console-like device that has five pushbuttons, 128x64 I2C OLED display and arduino nano. And it doesn't work when uploaded to arduino nano -...
Demko's user avatar
  • 19
0 votes
1 answer
1k 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
554 views

Carbon dioxide sensor MG 811

I am using MG811 carbon dioxide sensor with ESP8266 module. CO2 values is being read inside closed room. The value comes around 400 ppm. Using CO2 generator does not make increase in reading. Checked ...
Jashanjot Kaur's user avatar
0 votes
1 answer
172 views

Temperature is not updated on OLED screen - Grove components

I am using 2 grove components in order to display a temperature. I use an I2C High Accuracy Temperature Sensor - MCP9808 and an OLED Screen using this script: #include <U8g2lib.h> #include <...
AsiJapan's user avatar
  • 113
2 votes
0 answers
696 views

Arduino OLED ssd1315 graphic print questions

I’ve tried to create a system that the rotary sensor as an input and use a 0.96 inch Oled as an output (first pic), try to show the voltage measurements and performance test using a small bar graphic. ...
Pei-shan Tsai's user avatar
2 votes
1 answer
515 views

Why is the Adafruit splashscreen logo not displayed properly?

I'm working with a 128x64 Oled display. I have just installed the Adafruit library and I'm running some sample codes. I have not modified the sample code in anyway yet just testing if the oled display ...
Emma's user avatar
  • 23
1 vote
1 answer
456 views

Arduino u8glib Problem

I am Trying to make tetris on a 128x64 oled 1.3", and I am using the u8glib library. Here Is My Code: #include "U8glib.h" U8GLIB_SH1106_128X64 u8g(13, 11, 10, 9); int val = -53; int ...
hellopeople's user avatar
1 vote
1 answer
346 views

Arduino Nano I2C OLED display 0.96 inches 128x64 pixels

I have a strange issue while trying to run the hello world code on an arduino nano connected to an OLED display. This is the code I used: #include <Adafruit_SSD1306.h> Adafruit_SSD1306 ...
zanga's user avatar
  • 21
0 votes
1 answer
130 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
1 answer
144 views

Trying to use I2C accelerometer and SPI OLED

I'm trying to stream the data coming from my I2C MMA8452Q accelerometer to an Adafruit-based SSD1351 OLED RGB display that uses SPI via an Arduino UNO. When I run example code for the accelerometer I ...
Tom W's user avatar
  • 11
2 votes
1 answer
202 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
0 votes
2 answers
622 views

Serial and I2C not working together

I have very peculier problem. When I run this code SSD1306 fails to initialize. Output at serial console is: 20:26:33.194 -> MPU6050 OLED demo 20:26:33.532 -> SSD1306 allocation failed #include &...
Pankaj's user avatar
  • 21
2 votes
1 answer
539 views

Why SSD1306 OLED display get scrambled text when printing messages from separate tasks in RTOS? (revised)

ESP32 with RTOS, test app with 2 independent tasks. Each prints a message to OLED display. Why text gets frequently scrambled? Mutex have been used to share display resource. #define DEBUG_ESP ...
Paulo Borges's user avatar
1 vote
0 answers
2k views

OLED 128x64 make text bigger

I have a sketch that prints out a value from 0 to 100. I want it to take up the whole screen. I can't figure out how to make the font bigger I think that the part of the code defines the size of the ...
SV Savannah's user avatar
1 vote
1 answer
1k views

Random artifacts on SSD1306 OLED screen

I'm having a really strange problem with my screen. It's connected in i2c to my Arduino Nano and I'm using a rotary encoder to navigate through a menu. At startup everything is fine, but when I change ...
Mugen's user avatar
  • 29
0 votes
1 answer
223 views

Error Compiling for board Arduino Nano while using Adafruit GFX

Whys is this happening to me?? I have to meet a deadline please help!! Here is my code. #include <SPI.h> #include <Wire.h> #include <Adafruit_GFX.h> #include <Adafruit_SSD1306.h&...
Shridhar Sharma's user avatar
-1 votes
1 answer
275 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
1 vote
1 answer
932 views

Printing vairable with U8GLib

I have this code that takes temperature and humidity values from a DHT11 sensor and number of faces from an external python code and prints them on an OLED screen but instead of values of variables it ...
vueenx's user avatar
  • 19
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
  • 21
0 votes
2 answers
133 views

Is there a limitation of how many instances of the `String` class?

Platform Attiny85 with AttinyCores 1306 OLED i2c with Tiny4KDisplay Goal using a joystick for menu navigation up/down choose left enter (not finished yet) right back (not finished yet) inverse ...
River's user avatar
  • 103
1 vote
1 answer
424 views

SSD1306 shows static when I try to display an XBM image

This is my circuit. This is the code. #include "U8glib.h" // include the universal graphcs library U8GLIB_SSD1306_128X64 u8g(12, 11, 10, 9, 8); // initialise a u8g display ...
Shridhar Sharma's user avatar
0 votes
1 answer
80 views

Arduino boards are not working with powerbanks!

I have used many Arduino boards with adapters and other power supplies. While connecting with a powerbank for portable projects I have noticed that the power goes off after a couple of seconds and ...
Sohan Arafat's user avatar
0 votes
1 answer
79 views

File.read() always returns -1

I'm trying to print a txt file from an SD card to a SSD1306 using the u8x8 library. Here's the current code: #include <SD.h> #include <Arduino.h> #include <U8x8lib.h> #ifdef ...
none none's user avatar
  • 233
2 votes
1 answer
2k 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
1k views

I am getting an error while trying to set up the U8g2 library

I am just trying to set up the U8g2 library to use an OLED. I read through the documentation and tried copying and pasting the code block example for the constructor, but switched out their ...
Kayla's user avatar
  • 21
2 votes
1 answer
121 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
-1 votes
2 answers
871 views

How to properly put a u8g2 handle in a class

I'm trying to create a small battery powered alarm clock using an Arduino MKRZero and a generic SH1106-controlled, 128x64 pixel oled. I started out just dumping all code into a single file named Clock....
Simon's user avatar
  • 107
2 votes
0 answers
629 views

OLED display on I2C causes esp8266 to reset

I have connected two temp sensors and an OLED display to a NodeMCU using I2C. When the program reaches the instruction to print the measurements on the display the program crashes and NodeMCU resets ...
Zaffresky's user avatar
  • 183
1 vote
0 answers
253 views

Problem with using SD and Adafruit_SSD1306 libraries at the same time

I am searched over the internet and found out a few similar questions, but non of them were helpfull, so I decided to open a new quetion. I tried both SD and Adafruit_SSD1306 libraries and they both ...
LucasN's user avatar
  • 71
0 votes
0 answers
162 views

Different Counter Reading on Serial Monitor Vs .96" OLED I2C

I've cobbled some code together from reading multiple sources on the web. Makeatronics in particular to help me get this rotary encoder code together (shout out to them). I'm pretty close to the end,...
Jeremy Gardner's user avatar
1 vote
0 answers
290 views

Problem with Adafruit_SSD1306 library in .h fie

I have a project which includes OLED display, so I decided to use Adafruit_SSD1306 library. But I have problem with compiling code, which uses this library, in another .h file. When I use this library ...
LucasN's user avatar
  • 71
1 vote
0 answers
626 views

Looping a defined function to show live variables printed on OLED screen

I have started a thread on the Arduino forum. If someone could have a look at the thread and give me some help either here or there that would be great. (I don't want to have to add all the ...
jburke424's user avatar
2 votes
3 answers
734 views

240*320 transparent OLED display with Arduino

A long time ago I ordered this transparent OLED display (from a chinese supplier on alibaba) planning on interfacing it with an Arduino but didn't really have the skills to get the project going. I ...
Vosem Media's user avatar
1 vote
2 answers
616 views

Arduino program using i2c stops working after printing to OLED a few times

A NOTE ON THE PROJECT AND PROGRAM STRUCTURE I am developing an open source Smart Watch project using Arduino. The code can be found here: https://github.com/shivangsgangadia/SmartWatch The code is ...
Shivang Gangadia's user avatar
0 votes
2 answers
1k views

Finding address of OLED using I2C communication and Arduino

It is known that address of OLED SSD1306 is 3C. The frame format is as follows: The figure implies that the binary pattern should be 01111000 for the first frame (considering write mode and the ...
shivamag00's user avatar
1 vote
1 answer
1k views

Problem to Setting up i2c OLED wemos D1 mini shiled (64*24)

Hi I used this shield before well. But it didn't work when I wanted to work with him last night! this is my wireing : Now I want to know how to test that it is healthy? Is i2c address missing or ...
navid's user avatar
  • 25
0 votes
1 answer
471 views

How does the ssd1306 handle different screen sizes?

I noticed that if I have two SSD1306 displays, the 128x32 display will lose every other row if written in x64 mode, and the 128x64 display will show blank horizontal lines if written in x32 mode. How ...
user avatar
1 vote
0 answers
603 views

I2C and SPI using sensor and Oled display

Im currently working on a project which displays vital signs such as pulse and oxygen on my display. Now, my sensor is connected through I2C while my OLED runs through SPI. Im trying to display the ...
Shaukatali Z Hussein's user avatar
1 vote
1 answer
266 views

How can I display text on OLED?

I'm trying to print the information, which is received from the other ESP32 by CAN transceiver, on an OLED. The CAN bus is working perfectly, as the 'HELLO WORLD' is already be received. But I can't ...
noah's user avatar
  • 11