OLED display based on a SSD1306 OLED driver IC.Arduino/libraries/Wire/Wire.h. How to connect and program the Geekcreit 0.96 inch 4 pin white I2C OLED module with Arduino. Include whatever device class headers you need for. If youre using other implementations, this is not necessary. The I2Cdev.h header also includes it if necessary, but Arduinos build process requires that your main sketch file have it as well. If youre using the Arduino Wire library, make sure you include 'Wire.h' in your main sketch file.
Wire H Library Zip File You DownloadedBrowse to the zip file you downloaded and select it for import. Open your Arduino IDE and click on Sketch -> Import Library -> Add Library. Download Rev 5 of the I2C Library. This library is free software you can redistribute it and/or.Here are the steps necessary to install the I2C Library.![]() Pin connections are as follows for wiring the OLED display to an Arduino Uno.How to Connect the Geekcreit 0.96 Inch OLED I2C Display to Arduino – Wiring Diagram Arduino MEGA 2560 OLED WiringPin connections for wiring an Arduino MEGA 2560 to the OLED display are as follows.Arduino OLED I☬ Libraries for SSD1306 and Graphics FunctionsTwo Arduino libraries must be installed to start using the display. Don't blow up your display!Also make sure that your display is 5V compatible as this one is.Geekcreit 0.96 Inch OLED Display I2C/TWI Pinout Arduino Uno OLED WiringThe image below shows how to connect the Geekcreit 0.96 inch OLED I2C display to Arduino. Some modules have GND and VCC swapped around. If the pins are swapped, make sure to change the connections to the Arduino – OLED VCC connects to 5V on the Arduino, OLED GND to GND on the Arduino.Caution! Make sure that you connect the power pins correctly. Check your display to make sure that it is the same as the image below. Install the SSD1306 Driver LibraryDownload the Adafruit_SSD1306 library which is saved to your computer in a file called Adafruit_SSD1306-master.zip.Copy the Adafruit_SSD1306-master folder from the downloaded zipped file into the Arduino libraries folder. Both these libraries are available from Adafruit. The GFX library provides graphics functions for displaying text, drawing lines and circles, etc. ![]() Find Adafruit_SSD1306.h and open it in a text editor. If it is not changed, an error message will appear when attempting to verify the example sketch (see the section below) in the Arduino IDE:#error ("Height incorrect, please fix Adafruit_SSD1306.h!") Open the Adafruit_SSD1306 folder that was just installed in the Arduino libraries folder. The display size must be changed in the driver before it can be used. Modifying the SSD1306 DriverThe SSD1306 driver isn't set up for the Geekcreit OLED display by default. On my Linux computer the libraries appeared under the "Recommended libraries" section of the pop-out menu near the bottom. The original line of code is shown above it and is commented out.After making the changes, the sketch can be uploaded to the Arduino. This address is not 0x78 or 0x7A as printed on the back of the OLED board.// by default, we'll generate the high voltage from the 3.3v line internally! (neat!)//display.begin(SSD1306_SWITCHCAPVCC, 0x3D) // initialize with the I2C addr 0x3D (for the 128x64)Display.begin(SSD1306_SWITCHCAPVCC, 0x3C) // changed this to 0x3C to make it workAs shown above, the address was changed to 0x3C in display.begin(). Change the address from 0x3D to 0x3C as shown in the code below. Running the Adafruit Example SketchIf the libraries for the display were installed correctly, example programs for the display will be found in the Arduino IDE under File → Examples → Adafruit SSD1306 – open the ssd1306_128x64_i2c sketch under this menu.The I☬ address must be changed in this sketch in order for it to work with the Geekcreit display. Comment out #define SSD1306_128_32 and uncomment #define SSD1306_128_64 so that the code in this section looks as follows./*=The driver is used in multiple displays (128x64, 128x32, etc.).Select the appropriate display below to create an appropriately-*//*=*/Save the file after making the changes. Cakewalk for mac trialA quick start Arduino template sketch, text display demo and various graphics functions follow. Click the button below to make a donation.This section of the tutorial shows how to quickly start using the I2C OLED display with the Adafruit libraries. Various graphics and text functions are then displayed.You can help the Starting Electronics website by making a donation:Any donation is much appreciated and used to pay the running costs of this website. The example program starts by showing the Adafruit logo, it then turns on a single pixel. An explanation of how the program works follows.Geekcreit 128 x 64 OLED Display Arduino DemoDisplay. A function is then used to display a line of text on the display as can be seen in the image – a "hello world" program. From Geekcreit* using Adafruit SSD1306 driver and GFX libraries.*-*/// reset pin not used on 4-pin OLED moduleAdafruit_SSD1306 display(-1) // -1 = no reset pin#error("Height incorrect, please fix Adafruit_SSD1306.h!") Display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR) // put your main code here, to run repeatedly:Text "Hello World" and Pixel Demo ProgramThe Arduino sketch below sets a pixel at each corner of the screen as shown in the image below. Copy the code and use it as a basis for starting new OLED display projects./*-* Template file for 4-pin I2C OLED display, e.g. It includes the necessary header files and initialization code for the display.
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