Design with 128x64 OLED Display (I2C IIC SPI Serial) in Cirkit DesignerThe DollaTek 128x64 OLED Display is a compact and versatile screen module that utilizes organic light-emitting diodes to provide a high-contrast, high-resolution display. This particular model, identified by the part ID SSH1106, is capable of displaying graphics and text in a monochrome (single-color) format. It supports multiple communication protocols, including I2C (Inter-Integrated Circuit), IIC (Intelligent Interface Controller, often used interchangeably with I2C), and SPI (Serial Peripheral Interface), making it highly adaptable to various microcontroller platforms, such as Arduino, Raspberry Pi, and others.
This circuit features an ESP8266 microcontroller interfaced with a 128x64 OLED display via I2C for visual output and an RGB LED controlled through current-limiting resistors. The ESP8266 provides power and control signals to both the display and the LED, enabling visual feedback and status indication.
Open Project in Cirkit Designer
This circuit connects an Arduino UNO to a 128x64 OLED display using I2C communication protocol. The Arduino provides power to the display and communicates with it via the SDA and SCL lines connected to the A4 and A5 pins, respectively. The embedded code initializes the display and prints 'Hello, World!' on it.
Open Project in Cirkit Designer
This circuit connects a 0.96" OLED display to an IoT board. The OLED display is powered by the 3.3V and GND pins of the IoT board, and communicates with the board via I2C using the SDA and SCL pins.
Open Project in Cirkit Designer
This circuit connects an Arduino Nano to an OLED 128x64 I2C Monochrome Display. The Arduino provides power to the OLED display and communicates with it via the I2C protocol, using its A4 and A5 pins as SDA and SCK lines, respectively. The embedded code initializes the display and draws a single pixel on it, which suggests that the circuit is designed for visual output, possibly for a user interface or data visualization.
Open Project in Cirkit Designer| Pin Number | I2C/IIC Mode | SPI Mode | Description |
|---|---|---|---|
| 1 | GND | GND | Ground |
| 2 | VCC | VCC | Power Supply (3.3V-5V) |
| 3 | SCL | D0/CLK | Serial Clock Line |
| 4 | SDA | D1/MOSI | Serial Data Line |
| 5 | RES | RES | Reset Pin |
| 6 | DC | DC | Data/Command Control Pin |
| 7 | CS | CS | Chip Select (SPI mode) |
| 8 | - | - | Not Connected |
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
void setup() {
// Initialize with the I2C addr 0x3C (for the 128x64)
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
Serial.println(F("SSD1306 allocation failed"));
for(;;); // Don't proceed, loop forever
}
// Clear the buffer
display.clearDisplay();
// Draw a single pixel in white
display.drawPixel(10, 10, WHITE);
// Display the drawing
display.display();
}
void loop() {
// Nothing here for this simple example
}
Note: The example code provided uses the Adafruit SSD1306 library, which is compatible with the SSH1106 driver with minor differences. The library can be installed via the Arduino Library Manager.
Q: Can I use this display with a 5V microcontroller? A: Yes, the display can be powered with 5V, but ensure that the logic levels for data lines match the microcontroller's.
Q: How do I know if my display is in I2C or SPI mode? A: The mode is determined by how you wire the display to your microcontroller and how you initialize it in your code.
Q: What library should I use for this display? A: For Arduino, the Adafruit SSD1306 library is commonly used, though you may need to make minor adjustments for the SSH1106 driver.
Q: Can I display images on this OLED? A: Yes, you can display bitmap images by converting them into a byte array format that the display can interpret.
Q: How do I adjust the contrast or brightness of the display? A: These settings can be adjusted through commands sent from the microcontroller to the display. Refer to the SSH1106 datasheet for specific commands.