Questions tagged [oled]

An OLED (organic light-emitting diode) contains a film of organic material that emits light when current is applied. They may be used to create digital displays that do not require a backlight giving a deeper black level and higher contrast than LCD displays.

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OLED SS1306 displays on one side only when using AVR

I have an I2C 128x64 OLED display here. I've tried using Arduino and everything works flawlessly. Now I'm trying this but just writing in straight-up C code. Majority of the display is garbled up. I'...
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ssd1306 (30 pin) oled display eagle library

I am designing an electronic project in Eagle PCB software. The project having a 30Pin SSD1306 Oled Display. I searched in the internet for the eagle library and i cloud not find a matching one. The ...
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66 views

OLED ssd1306, “Set the Oscillator Frequency”?

I am working with a OLED SSD1306 and in the datasheet there is a parameter named "Set the Oscillator Frequency." It is a four bit value to adjust. I can't understand the purpose of this. Can ...
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Display Design - would combining OLED with a white source be more efficient?

To be clear, I'm not an electrical engineer, nor do I claim complete knowledge of how displays work. However, I have done research into displays (televisions, computer monitors, AMOLED phone screens)...
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91 views

What could cause 45FPS limit for SSD1306?

I'm porting U8G2 display library to ESP32 microcontroller (no suitable tag) with ESP-IDF (its official platform) as the platform, I2C protocol for now, using SSD1306 display for testing. After all ...
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Why are OLEDs used in screens insted of LEDs?

I was trying to google this question and couldn't find any information. And from reading some info on how they work i didn't find any significant difference asides from OLEDs being made out of organic ...
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How do devices like the Game Boy Advance achieve their frame rate?

I've been designing my own handheld gaming device based around an AVR microcontroller and a small OLED display. I started off with a monochrome display 128x64 pixels and can comfortably draw to it at ...
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1answer
165 views

How to power a OLED 128x128 display from 3.3v microcontroller board?

I recently purchased a small 1 inch OLED screen. In the datasheet, it shows the max power requirements as: Operation: 3.5v Logic: 2.6v IO: 3.5v Display: 13.5v I figure I can directly connect the ...
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Why aren't laptops with transparent displays a thing? [closed]

I just realized that the display on my 2012 Macbook Air is transparent. I had the screen brightness of the built in display on the lowest (off) while using an external monitor, and the sun came ...
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Terminology - VDD vs VSS?

What is the correct voltage terminology for VDD and VSS? I've been installing a Winstar WEH001602D OLED and was struggling until I realised that it appears to have pins 1 and 2 reversed compared to ...
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376 views

Passive reset circuit for multi-chip game design

I've been building a small handheld gaming device based around the ATTiny85 and an SSD1306 OLED screen. It's a very limited system and as such I needed to be creative about how I used the I/O pins. I ...
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HMI design industerial [closed]

I'm planning to design HMI for a product that i want to design. but, I've questions that I couldn't find answers to: 1- TFT or OLED screens, are they reliable? do they last for > 10 years? (ok, yes ...
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242 views

ssd1306 registers

I got confusion while reading datasheet of the OLED display(128x64).I do not understand why to use two column start registers. https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
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75 views

Send a single pulse low/high pulse then stay high

I have a small OLED display that I'd like to drive with an ATtiny85 micro controller. The OLED is the 4 wire SPI type, with no CS. It has a Reset pin that is required to be pulsed low-high at power on ...
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341 views

SSD1306 128x32 Connector

What's the name of connector which can be used here? I know that I can always solder it to PCB, but I was looking for more "elegant" solution, and I remember seeing these connectors before on PCB's ...
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257 views

Connecting an Arduino oled display without a breadboard

I am new to Arduino and over all electrical and computer engineering. I need some help with connecting an OLED display to my Arduino. The problem is, I do not currently have a breadboard. If I need a ...
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573 views

Horizontal offset with generic SSD1306 OLED display

I bought a generic OLED 128x64 display on ebay and had some success in getting it running with the Adafruit SSD1306 library. I ported the initialization function to C and am driving the LCD using the ...
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OLED 5V-tolerant SCL and SDA

Looking online for small SSD1306 OLED screens to use with Arduino over I2C, I find products that look like this: The sellers don't offer datasheets - and the product descriptions don't say anything ...
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2k views

Why OLED TVs are not smaller than 55 inch? [closed]

Why OLED TVs are not smaller than 55 inch? Are there any techincal issues or just marketing/revenue problems? I saw OLEDs in operation - and was impressed - the quality perhaps even beter than of ...
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332 views

SSD1306 I2C: Draw only changes works however on wrong position, how to set position (command)?

I create an OLED display class for the SSD1306 and how it works is pretty straight forward. The display is buffered (offscreen method) and at performing an update, it 'dumps' the buffer to the display ...
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1answer
272 views

Playing around with I2C does not yield expected results for SSD1306-OLED

I'm trying to use an OLED-screen with I2C, but nothing happens (literally) so I come here to see if anyone can shed some lights on what I've done wrong. My first approach was to write a software I2C-...
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Is this 20x2 character display broken?

Recently I've got my hands on several 20x2 character displays which don't seem to work. This is what they look like: Apparently, they are HD44780-compatible. The three 16-pin connectors (single-row ...
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OLED_M01122 Letters Orientation [closed]

I want to know, How Letters will display from following three types?
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1answer
437 views

Pinout for lcd screen without datasheet

I found an oled screen at work, that I want to use, but it doesn't have a datasheet, just has its model number printed on the back, it is P19702. The only thing that I found online was this:http://www....
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536 views

Why does the ssd1306 OLED controller have an unusual memory layout?

I've recently ported a driver for the ssd1306 OLED controller. https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf http://www.ebay.co.uk/itm/0-96-inch-128x64-I2C-Interface-White-Color-OLED-Display-...
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Can I use a touch screen from an old Blackberry on a Raspberry PI?

I have a pile of old Blackberry phones with capacitive touch screens and I'm hoping they can be reused as, at the very least, output devices for Raspberry PIs or even microprocessors. Is this even a ...
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904 views

how to connect i2c peripherals to digispark Attiny85

I am new to micro controllers and I have problem with understanding and connecting I2C devices to Attiny85 digiSpark micro controller. According to this picture SDA and SCL are on the same pin and I ...
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3answers
511 views

Looking for LCD replacement (OLED)

I'm considering replacing this 16x2 LCD module found in an early '90s E-Mu synthesizer with a modern OLED equivalent. However, apart from the Solomon name I can't find any reference to any of the ...
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1answer
79 views

How are displays updated? [closed]

If you would excuse the infiltration by a curious computer scientist with very little knowledge of hardware, I would like to understand better how modern displays are updated. I don't care about HDMI ...
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1answer
58 views

What makes OLEDs optimal for flexible displays or wearable displays?

Anytime I come across a flexible display technology, OLEDs are always mentioned there. What specific properties of this device makes it so popular in such type of displays?
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224 views

LED's or OLED for creating specfic colors [closed]

I'm trying to create specific colors given the RGB values (please not that the RGB values go from (0-255) RGB LEDs use voltage to turn on and the voltage varies from color to color (The red LED in an ...
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3answers
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Flip the image of OLED 128x64 0.96 inch display

I am looking for a method to flip the image of an OLED 128x64 0.96 inch (with SSD1306 driver) display. It is the one I have with 4 pins only (image found on Internet): What I want to do is: Are ...
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308 views

Trouble interfacing NewHaven oled display with stm32f4

The last two days I've been trying to interface a NewHaven Dislpay with my stm32f4 discovery board with no result. The datasheet gives poor written examples as to how to initialize this display and ...
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16x2 Charater display for outdoor use

I currently have a project installed in an outdoor location. It currently uses a 16x2 blue OLED display for simple messages to the user. Over the past 4 years I have had to replace the display ...
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1answer
278 views

Interfacing OLED 0.95'' 96*64 with ATMEL SAMD20 Series MCU

I am trying to interface my OLED 0.95'' 96*64 with my SAM D20 using SPI interface. I am fairly new to interfacing, so I'm finding it difficult interfacing the part. Question: 1) When I provide the ...
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I2C problem in pic18f26j50

I've been trying to interface an i2c Oled display on pic18f26j50 microcontroller but i can't get it to work. I'm using mikroC pro for pic. ...
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2answers
267 views

How to display voltage on OLED? [closed]

The basic idea is to make an OLED voltage meter. I idealy want to use as little parts as possible. If my understanding is correct I would need a voltage sensing circuit which would give feedback to a ...
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OLED display using dspic33f i2c

I am trying to use OLED display in a dspic33f microchip. I've successfully initialized and sent data using I2C to OLED. I managed to display a small font(8pt) on the OLED. However, when I tried a ...
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427 views

lcd display with black background under a semi reflective mirror?

I'd like to make a "magic mirror", something very similar to this https://blogs.windows.com/msedgedev/2016/05/31/magic-mirror-hosted-web-app/, but much smaller. Basically, I have a closed box (no ...
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1answer
301 views

Why are there no discrete OLEDs?

Why does nobody make a discrete OLED in an SMT or thru-hole package, like we have with LEDs? Is it a cost thing or a limitation of the process?
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OLED is garbled when powered by 3.7 battery but not when powered by USB or variable regulated power source?

I have an esp8266 on a breakout board for programming hooked up to an OLED via GPIO 0 and 2. It works fine if I power it via the FTDI/USB. It also works when I power it at 2.8-3.0V using a desktop ...
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1answer
379 views

LED display resolution dpi

I had a question about the resolution of an OLED display. It's says the resolution is 128x128 dots under the display format in the datasheet sheet of the OLED. Does this mean that there are 128 dots ...
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2answers
3k views

Interfacing I2C OLED display with pic18f2550

I've been trying to interface SSD1306 I2C oled monochrome display module with PIC18F2550 micro-controller without any success. the datasheet of ssd1306 controller shows the following data format so ...
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2answers
245 views

Could OLED displays be made to produce a voltage when off?

According to this guy it is feasible to use LEDs to detect light, because they will turn any light emitted on them into a tiny voltage that can be used in a sensor. Since modern flat screens (OLD) ...
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3D display, that's actually3D [closed]

So one night, (last night) i was in bed trying to get to sleep, and then something came to mind, this one thing came to my mind and got me excited. You may now be wondering what came to my mind, or ...
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SSD1306 Display SPI Connection or I2C (According to resistors)

I bought one of those cheap 0.96" OLED Displays from china, ebay. In the product description it states that it's a I2C Display, Ebay Link. I want to use it with an ATmega8. I connected it accordingly ...
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What is the best way to power a wearable device such as flexible oled screens? [closed]

What is the best way to power a wearable device such as flexible oled screens? Possibly a way that wouldnt alter the size of the wearable?
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How could I power flexible oled screens with wearable power source and could I transmit data onto it with bluetooth via app [closed]

How could I power flexible oled screens with solar power and could I transmit data onto it with bluetooth via app? Would this be possible? please can you help thank you
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1answer
377 views

Large round (20 or 24 inch) LED or OLED display? [closed]

Is their any such thing as a 20 or 24 inch round LED or OLED display? I've searched and searched to no avail and I am wondering is that even possible?
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How to make this I2C OLED screen work? (probably SH1106)

I have just received this screen: link but unfortunately it's different then other showed in reviews. That's my version link It's probably based on SH1106 but I can't make it work. I have tried few ...