What is an OLED Display?
Organic Light Emitting Diode (OLED) displays are a type of flat panel display that uses organic compounds to produce light. OLEDs are thin, efficient, and require very little power to operate. They are used in a variety of applications, such as mobile phones, televisions, and computers.
Interfacing OLED Display with Arduino
Interfacing OLED display with Arduino is a simple process. It requires four connections: ground, VCC, serial clock (SCK), and serial data (SDA). The ground pin of the OLED display is connected to the ground pin of the Arduino board, and the VCC pin is connected to the VCC pin of the Arduino board. The serial clock (SCK) pin is connected to the A5 pin of the Arduino board, and the serial data (SDA) pin is connected to the A4 pin of the Arduino board. Alternatively, if the Arduino board has pins labeled SD and SDA, these can also be used to connect the OLED display.
Writing Code for OLED Display
Once the OLED display is connected to the Arduino board, code can be written to display text or images on the display. In this example, code was written to display the name “Shanta Mukar” on the OLED display. The code uses the Adafruit_SSD1306 library to control the display. The library can be downloaded from the Arduino IDE library manager. Once the library is installed, the code can be written to display text or images on the OLED display.
Components Required
For this experiment, the components required are an OLED display, an Arduino board (either Uno or Nano), and some jumper wires.
Connection Diagram
The ground pin of the OLED is connected to the ground pin of the Arduino board. The VCC pin of the OLED is connected to the 5V pin of the Arduino board. The SDA pin of the OLED is connected to the A4 pin of the Arduino board and the SCL pin of the OLED is connected to the A5 pin of the Arduino board. The ground pin of the OLED is gray in color, while the VCC pin is red.
Uploading Program
Before uploading the program, it is important to install the necessary libraries. The first library is the Adafruit_SSD1306 library, which is used to control the OLED display. The second library is the Adafruit_GFX library, which is used to draw shapes and text on the OLED display. Once the libraries are installed, the program can be uploaded to the Arduino board.
Testing the OLED Display
Once the program is uploaded, the OLED display should be tested. To do this, the OLED display should be connected to the Arduino board and the power should be turned on. The OLED display should then display a simple message such as Hello World!. If the message is displayed correctly, then the OLED display is working correctly.
Including Libraries
In order to interface the OLED display with Arduino, it is necessary to include certain libraries. The two libraries required are Adafruit GFX and Adafruit SSD1306. These libraries can be installed by navigating to the Sketch menu, selecting Include Library, and then clicking Manage Library. Once the Manage Library window opens, search for Adafruit GFX and install it. Similarly, search for Adafruit SSD1306 and install it. Alternatively, the libraries can be installed using the provided links.
Finding the Address of the OLED Display
Since the OLED display uses the I2C communication protocol, it is necessary to find the I2C address for the display. This can be done by uploading a code to the Arduino IDE. The code to find the address of the OLED display is as follows:
Uploading the Code
Before uploading the code, it is important to select the board and port. The port selected should be COM 3 and the board should be Arduino Uno. Once the board and port have been selected, click on upload. After the upload is complete, click on the serial monitor. This will display the address as 0x3C.
Finding the Address of the OLED Display
In order to interface with an OLED display, one must first identify the address of the device. This can be done by using the Arduino IDE to scan for the address. Once the address is found, it should be copied and pasted into the main code in order to display the desired message. In this case, the address found was 0x3C.
Including the Necessary Libraries
In order to use the OLED display, it is necessary to include certain libraries in the sketch. This can be done by going to the Sketch menu and selecting Include Library. From there, the user should select the Adafruit SSD1306 and Adafruit GFX Library. Once these libraries are included, the user is ready to write the code to display the desired message.
Writing the Message
Once the necessary libraries have been included, the user can write the desired message. This can be done by using the command “display.printLn” followed by the desired message. In this case, the message written was “Hello World!”.
Uploading the Code
Once the code has been written, it is necessary to upload it to the Arduino board. This can be done by connecting the board to the computer and selecting the Upload option in the Sketch menu. Once the code has been uploaded, the message should appear on the OLED display.
Interfacing OLED display with Arduino is a simple process that requires four connections. Once the connections are made, code can be written to display text or images on the display. The Adafruit_SSD1306 library can be used to control the display and make it easy to write code for the OLED display.
Interfacing an OLED display with an Arduino board is a relatively simple process. By following the steps outlined in this tutorial, anyone can easily connect an OLED display to their Arduino board and begin experimenting with it.
Interfacing with an OLED display is a relatively simple process. By following the steps outlined in this tutorial, beginners can easily interface with an OLED display using an Arduino board.
